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Methane, trichloro- is a volatile chlorinated organic liquid commonly known as chloroform or trichloromethane.
Methane, trichloro- is a colorless, dense, slightly water-soluble liquid characterized by a distinctive sweet odor and a boiling point near 62°C.
Methane, trichloro- is primarily used as a chemical intermediate and controlled laboratory or industrial solvent, although many historical consumer and medical uses have been discontinued because of its health hazards.
CAS Number: 67-66-3
EC Number: 200-663-8
Molecular Formula: CHCl₃
Molecular Weight: 119.38 g/mol
SYNONYMS
Chloroform, Trichloromethane, Methane Trichloride, Methyl Trichloride, Methenyl Trichloride, Formyl Trichloride, Trichloroform, Trichloro-methane, Chloroforme, Chloroformum, Cloroformio, Triclorometano, Trichlormethan, Trichloormethaan, Chlorform, Freon 20, Refrigerant 20, R-20, R 20, F-20, F 20, HCFC Feedstock Chloroform, Fluorocarbon-Grade Chloroform, Technical Chloroform, Laboratory-Grade Chloroform, Reagent-Grade Chloroform, Analytical-Grade Chloroform, Spectroscopic-Grade Chloroform, Chromatography-Grade Chloroform, HPLC-Grade Chloroform, Stabilized Chloroform, Ethanol-Stabilized Chloroform, Amylene-Stabilized Chloroform, Anhydrous Chloroform, Chloroform Solution, Chloroform Extractant, Chlorinated Methane Solvent, Trihalomethane CHCl₃, CHCl₃, CAS 67-66-3, EC 200-663-8, UN 1888, PubChem CID 6212, NIOSH RTECS FS9100000, NSC 77361, NCI-C02686, MFCD00000826, RCRA Waste Number U044, HEDRZPFGACZZDS-UHFFFAOYSA-N
APPLICATIONS
Methane, trichloro- serves primarily as a chemical intermediate in the manufacture of chlorodifluoromethane, also known as HCFC-22.
Methane, trichloro- reacts with hydrogen fluoride under controlled industrial conditions to introduce fluorine into the chlorinated methane structure.
Methane, trichloro- supports production of HCFC-22 used as an intermediate for tetrafluoroethylene and related fluorochemical feedstocks.
Methane, trichloro- remains industrially important for fluoropolymer production even though the refrigerant use of HCFC-22 has been substantially phased down.
Methane, trichloro- functions as an upstream raw material for fluoropolymers used in chemically resistant and low-friction applications.
Methane, trichloro- contributes indirectly to materials used for corrosion-resistant pipe and reactor linings.
Methane, trichloro- supports fluoropolymer production for electrical, electronic, medical, architectural, and industrial components.
Methane, trichloro- enables manufacture of feedstocks for nonstick coatings, waterproof materials, specialty lubricants, seals, and high-performance engineering products.
Methane, trichloro- finds application as a controlled solvent in chemical-manufacturing processes.
Methane, trichloro- dissolves many nonpolar and moderately polar organic compounds that have limited compatibility with water.
Methane, trichloro- supports reaction, extraction, washing, purification, and phase-separation operations in closed industrial equipment.
Methane, trichloro- requires effective solvent recovery and exposure controls because harmful vapor concentrations can develop rapidly at room temperature.
Methane, trichloro- serves as a liquid–liquid extraction solvent in laboratory and process-development work.
Methane, trichloro- forms a dense lower organic phase when mixed with water under ordinary conditions.
Methane, trichloro- facilitates separation of suitable organic compounds from aqueous solutions through differences in partition behavior.
Methane, trichloro- enables visible phase separation while requiring careful control of emulsions, vapor release, and chlorinated-solvent waste.
Methane, trichloro- functions as an extractant for lipids, fatty acids, sterols, phospholipids, oils, and other hydrophobic biological constituents.
Methane, trichloro- is commonly combined with methanol or related polar solvents to disrupt lipid–protein interactions during analytical extraction.
Methane, trichloro- provides a lower organic phase capable of retaining broad classes of neutral and polar lipids after water is added.
Methane, trichloro- supports lipidomic and biochemical sample preparation when safer alternatives have been evaluated and adequate controls are maintained.
Methane, trichloro- finds application in natural-product extraction and fractionation research.
Methane, trichloro- dissolves selected alkaloids, waxes, oils, resins, pigments, flavors, and plant-derived organic constituents.
Methane, trichloro- supports partitioning of hydrophobic compounds away from aqueous or hydroalcoholic extracts.
Methane, trichloro- requires residual-solvent control before any isolated material is considered for food, pharmaceutical, cosmetic, or biological use.
Methane, trichloro- serves as a solvent in pharmaceutical-process research and selected controlled manufacturing stages.
Methane, trichloro- supports extraction, reaction, crystallization, washing, and purification of compatible pharmaceutical intermediates.
Methane, trichloro- can be removed by evaporation or solvent exchange because of its comparatively low boiling point.
Methane, trichloro- requires validated residual-solvent limits, closed processing, occupational controls, and documented waste management.
Methane, trichloro- functions as an analytical sample-preparation solvent for environmental, pharmaceutical, forensic, biological, and industrial materials.
Methane, trichloro- extracts compatible organic analytes from water, soil extracts, biological fluids, and formulated products.
Methane, trichloro- supports concentration of analytes after controlled evaporation of the organic phase.
Methane, trichloro- requires use of blanks, recovery standards, and contamination controls because stabilizers and trace impurities can affect sensitive analyses.
Methane, trichloro- finds application as a chromatography solvent in thin-layer, column, and selected liquid-chromatographic procedures.
Methane, trichloro- provides intermediate elution strength for many aromatic, lipidic, polymeric, and natural-product compounds.
Methane, trichloro- can be blended with alcohols, ketones, esters, hydrocarbons, or acids to modify mobile-phase polarity.
Methane, trichloro- requires grade selection based on ultraviolet absorbance, water content, acidity, stabilizer composition, and residue after evaporation.
Methane, trichloro- serves as a solvent for preparing samples and standards for infrared, mass-spectrometric, and chromatographic analysis.
Methane, trichloro- supports dissolution of compatible organic materials without introducing water into moisture-sensitive measurements.
Methane, trichloro- provides established infrared, mass-spectral, thermodynamic, and chromatographic reference data for method development.
Methane, trichloro- enables identity confirmation and impurity profiling when compared with traceable reference standards.
Methane, trichloro- functions as a reaction solvent in organic synthesis when a dense, volatile, chlorinated medium is technically suitable.
Methane, trichloro- supports reactions involving selected acids, acylating agents, neutral reagents, and nonaqueous organic substrates.
Methane, trichloro- facilitates temperature control and subsequent solvent removal because it boils near 62°C.
Methane, trichloro- must not be combined indiscriminately with strong bases, strong oxidants, acetone, or reactive metals because hazardous reactions may occur.
Methane, trichloro- serves as a dichlorocarbene precursor in specialized organic synthesis.
Methane, trichloro- forms a trichloromethyl intermediate under strongly basic conditions before loss of chloride generates dichlorocarbene.
Methane, trichloro- supports Reimer–Tiemann formylation of suitable phenolic substrates under carefully controlled reaction conditions.
Methane, trichloro- enables production of hydroxyaromatic aldehydes while requiring strict control of heat generation, caustic reagents, and toxic vapor.
Methane, trichloro- functions as a dichlorocarbene source for cyclopropanation of suitable alkenes.
Methane, trichloro- enables addition of dichlorocarbene across carbon–carbon double bonds to form gem-dichlorocyclopropane derivatives.
Methane, trichloro- supports preparation of strained-ring intermediates used in multistep organic synthesis.
Methane, trichloro- requires reaction-specific optimization because base, phase-transfer catalyst, substrate structure, and temperature strongly affect conversion and selectivity.
Methane, trichloro- finds application in controlled isocyanide synthesis through the carbylamine reaction.
Methane, trichloro- reacts with suitable primary amines under strongly basic conditions through a dichlorocarbene-related pathway.
Methane, trichloro- supports preparation of isocyanide intermediates used in multicomponent and heterocyclic chemistry.
Methane, trichloro- requires specialized containment because both the reagents and many isocyanide products present significant odor and exposure hazards.
Methane, trichloro- serves as a dissolution medium for selected polymers, elastomers, resins, adhesives, and coating components.
Methane, trichloro- supports laboratory casting of films, preparation of polymer solutions, and evaluation of molecular or material properties.
Methane, trichloro- facilitates removal after coating or casting because of its volatility.
Methane, trichloro- requires compatibility testing because it can attack certain plastics, rubber materials, coatings, seals, and equipment components.
Methane, trichloro- functions as a solvent in membrane, thin-film, and specialty-material research.
Methane, trichloro- dissolves selected polymers and hydrophobic additives before controlled casting or deposition.
Methane, trichloro- supports preparation of uniform laboratory films when evaporation rate, humidity, concentration, and substrate wetting are controlled.
Methane, trichloro- requires closed evaporation and vapor-capture systems because open-area casting can generate high airborne concentrations.
Methane, trichloro- finds application in purification by recrystallization, solvent displacement, and antisolvent processing.
Methane, trichloro- dissolves selected organic compounds at useful concentrations while remaining only slightly soluble in water.
Methane, trichloro- supports separation of organic products from inorganic salts or highly polar contaminants.
Methane, trichloro- enables solvent exchange into lower- or higher-boiling media when product stability and residual-solvent requirements are satisfied.
Methane, trichloro- serves as a reference substance in occupational, environmental, toxicological, and chemical-analysis laboratories.
Methane, trichloro- supports calibration of instruments used to measure volatile organic compounds in air, water, soil, and industrial samples.
Methane, trichloro- provides a defined retention time and mass-spectral profile for analytical identification.
Methane, trichloro- requires certified reference preparations and appropriate vapor-handling procedures for quantitative work.
Methane, trichloro- functions as a test compound in studies of volatilization, groundwater movement, disinfection by-products, and atmospheric degradation.
Methane, trichloro- supports evaluation of treatment processes intended to remove or limit formation of volatile trihalomethanes.
Methane, trichloro- provides a representative dense chlorinated solvent for examining air–water transfer and subsurface transport.
Methane, trichloro- requires environmental containment because it can volatilize rapidly, migrate toward groundwater, and harm aquatic organisms.
Methane, trichloro- finds application in controlled research concerning chlorination and drinking-water disinfection by-product formation.
Methane, trichloro- serves as an analytical target when chlorine reacts with naturally occurring organic matter in water.
Methane, trichloro- supports evaluation of treatment variables such as precursor concentration, disinfectant dose, contact time, pH, and post-treatment.
Methane, trichloro- is not intentionally added for this purpose because its presence in treated water is an unwanted by-product.
Methane, trichloro- serves as a specialized intermediate in selected dye and pesticide synthesis routes.
Methane, trichloro- provides a chlorinated one-carbon unit or reaction medium in processes developed for particular aromatic and heterocyclic products.
Methane, trichloro- supports controlled chemical manufacturing rather than direct consumer or agricultural application.
Methane, trichloro- is not currently reported as an active or inert ingredient in registered pesticide products in the cited current assessment.
Methane, trichloro- functions as a controlled extraction and processing solvent for selected fats, oils, greases, gums, waxes, resins, and rubber-related materials.
Methane, trichloro- provides broad solvency for hydrophobic materials and evaporates readily after separation.
Methane, trichloro- has largely been replaced in many routine applications by alternatives offering lower health or regulatory concern.
Methane, trichloro- should be selected only after process necessity, substitution feasibility, exposure control, and environmental impact have been assessed.
Methane, trichloro- serves as a solvent in controlled adhesive, coating, and polymer-processing research.
Methane, trichloro- supports dissolution and application of compatible resinous materials during method development.
Methane, trichloro- allows rapid solvent evaporation but may create porosity, cooling, vapor accumulation, or uneven film formation.
Methane, trichloro- requires verification of applicable restrictions before use in products associated with food, cosmetics, pharmaceuticals, or consumer packaging.
Methane, trichloro- functions as an educational reagent for demonstrating density, immiscible-liquid separation, volatility, halogenated-solvent properties, and organic extraction.
Methane, trichloro- supports advanced instruction in spectroscopy, chromatography, partition coefficients, and chlorinated-methane chemistry.
Methane, trichloro- enables demonstration of dichlorocarbene reactions only in appropriately equipped professional laboratories.
Methane, trichloro- should not be used in open classroom demonstrations because vapor exposure, chronic toxicity, and hazardous incompatibilities require professional controls.
DESCRIPTION
Methane, trichloro- is the registry-style name for the compound commonly called chloroform.
Methane, trichloro- is also systematically known as trichloromethane.
Methane, trichloro- is identified by CAS Number 67-66-3 and EC Number 200-663-8.
Methane, trichloro- has the molecular formula CHCl₃ and molecular weight 119.38 g/mol.
Structurally, Methane, trichloro- contains one carbon atom bonded to one hydrogen atom and three chlorine atoms.
The central carbon has approximately tetrahedral geometry.
Replacement of three methane hydrogen atoms with chlorine substantially increases molecular mass, polarizability, density, and boiling point.
The molecule is neutral and does not ionize appreciably under ordinary aqueous conditions.
Methane, trichloro- normally appears as a clear, colorless, highly volatile liquid.
Methane, trichloro- has a characteristic sweet or pleasant odor that does not provide adequate warning at hazardous concentrations.
Methane, trichloro- evaporates rapidly when exposed to air at ordinary room temperature.
Methane, trichloro- can create harmful airborne contamination very quickly after a spill or open-vessel release.
Methane, trichloro- has a normal boiling point of approximately 61–62°C.
Methane, trichloro- has a melting or freezing point near −64°C.
Methane, trichloro- remains liquid over a broad temperature range under ordinary atmospheric conditions.
Methane, trichloro- can cool surrounding surfaces rapidly during high-rate evaporation.
Methane, trichloro- has a density of approximately 1.48 g/mL at 20°C.
Methane, trichloro- is therefore substantially denser than water.
Methane, trichloro- normally forms the lower phase in a separatory funnel containing an aqueous upper phase.
Methane, trichloro- can sink beneath water and collect in low points after a release.
Methane, trichloro- is only slightly soluble in water.
Methane, trichloro- has a representative water solubility near 0.8 g per 100 mL at 20°C in international safety data.
Methane, trichloro- is compatible with many organic solvents, oils, lipids, resins, and nonpolar organic materials.
Methane, trichloro- forms separate phases with water unless other solvents or surfactants modify the system.
Methane, trichloro- has a vapor pressure of approximately 21.2 kPa at 20°C.
Methane, trichloro- vapor is approximately 4.12 times heavier than air.
Methane, trichloro- vapor can travel along floors, trenches, pits, drains, and other low-lying areas.
Methane, trichloro- accumulation in confined or lowered spaces can create both toxic exposure and oxygen-deficiency hazards.
Methane, trichloro- has a log octanol–water partition coefficient near 1.97.
Methane, trichloro- therefore has moderate affinity for organic phases while retaining measurable water solubility.
Methane, trichloro- volatilization is generally a major environmental-transfer process from exposed surface water and soil.
Methane, trichloro- can also migrate through soil toward groundwater because adsorption to many soils is limited.
Methane, trichloro- is classified as noncombustible under ordinary standard test conditions.
Methane, trichloro- does not have a conventional flash point, lower explosive limit, or upper explosive limit in standard safety references.
Methane, trichloro- can nevertheless become combustible when mixed with small quantities of flammable material or exposed to oxygen-enriched conditions.
Methane, trichloro- containers exposed to an external fire can release toxic and corrosive decomposition products.
Methane, trichloro- decomposes when subjected to severe heat.
Methane, trichloro- thermal decomposition can produce hydrogen chloride, chlorine, and phosgene.
Methane, trichloro- can therefore create a severe inhalation hazard even when it does not sustain ordinary combustion.
Methane, trichloro- should never be used near welding arcs, flames, extremely hot surfaces, or other high-energy thermal sources.
Methane, trichloro- commercial grades may contain ethanol, amylene, or related stabilizers.
Methane, trichloro- stabilizers are included to limit decomposition or undesirable reactions during storage and use.
Methane, trichloro- stabilized and unstabilized grades can behave differently in moisture-sensitive reactions and analytical methods.
Methane, trichloro- users should confirm stabilizer identity and concentration before selecting a grade.
Methane, trichloro- anhydrous grades are intended for processes requiring controlled water content.
Methane, trichloro- anhydrous labeling does not mean the material is free of stabilizer.
Methane, trichloro- can absorb limited moisture during repeated opening, transfer, or exposure to humid air.
Methane, trichloro- water content should be verified analytically for moisture-sensitive synthesis or measurement.
Methane, trichloro- is commonly manufactured through chlorination of methane-derived or chloromethane process streams.
Methane, trichloro- is separated from related chlorinated methanes through controlled fractional distillation.
Methane, trichloro- fluorocarbon grades require impurity profiles suitable for subsequent reaction with hydrogen fluoride.
Methane, trichloro- laboratory grades require additional control of water, acidity, nonvolatile residue, related chlorinated solvents, and stabilizers.
Methane, trichloro- is also formed unintentionally when chlorine or hypochlorite reacts with natural or synthetic organic matter.
Methane, trichloro- can occur as a trihalomethane disinfection by-product in treated drinking water, wastewater, swimming pools, and spas.
Methane, trichloro- formation depends on precursor composition, disinfectant conditions, pH, contact time, and water-treatment design.
Methane, trichloro- generated in water can subsequently transfer into indoor air during heating, showering, aeration, and agitation.
Methane, trichloro- was historically used as a general anesthetic.
Methane, trichloro- medical anesthetic use was largely discontinued after safer and more controllable alternatives became available.
Methane, trichloro- historical use does not support present-day medical, dental, cosmetic, or self-treatment application.
Methane, trichloro- should never be deliberately inhaled because central-nervous-system depression, unconsciousness, organ damage, and death may occur.
Methane, trichloro- exposure can occur by inhalation, skin absorption, and ingestion.
Methane, trichloro- short-term exposure can produce dizziness, drowsiness, headache, nausea, coughing, breathing difficulty, and unconsciousness.
Methane, trichloro- high exposure can affect the central nervous system, liver, and kidneys.
Methane, trichloro- some effects may be delayed, making medical observation important after significant exposure.
Methane, trichloro- removes natural oils from the skin during repeated or prolonged contact.
Methane, trichloro- can consequently cause dryness, redness, pain, cracking, and irritation.
Methane, trichloro- also irritates the eyes after direct liquid or concentrated-vapor exposure.
Methane, trichloro- contaminated clothing can prolong skin exposure and should be removed promptly.
Methane, trichloro- prolonged or repeated exposure can damage the liver, kidneys, respiratory tract, and central nervous system.
Methane, trichloro- is identified as a suspected carcinogen in current international safety information.
Methane, trichloro- is also identified as suspected of damaging fertility or the unborn child.
Methane, trichloro- occupational exposure should therefore be reduced as far as reasonably achievable through substitution, enclosure, ventilation, and protective equipment.
Methane, trichloro- is metabolized partly through pathways that can generate phosgene.
Methane, trichloro- reactive metabolites contribute to toxicity in susceptible tissues.
Methane, trichloro- harmful effects may be increased by simultaneous alcohol consumption.
Methane, trichloro- exposure incidents should be evaluated medically even when early symptoms appear mild.
Methane, trichloro- reacts violently with strong bases, strong oxidizing agents, alkalis, acetone, and certain reactive metals.
Methane, trichloro- incompatible metals include aluminium, magnesium, zinc, sodium, and potassium under hazardous reaction conditions.
Methane, trichloro- contact with incompatible substances can generate heat, pressure, fire, explosion, or toxic decomposition products.
Methane, trichloro- compatibility must be evaluated before introduction into reactors, piping, pumps, seals, absorbents, or cleaning systems.
Methane, trichloro- can attack selected plastics, rubbers, coatings, adhesives, and elastomeric seals.
Methane, trichloro- equipment should therefore be constructed from materials specifically rated for chlorinated-solvent service.
Methane, trichloro- unsuitable seals can swell, soften, crack, or lose mechanical integrity.
Methane, trichloro- material compatibility should be confirmed for the intended temperature, pressure, exposure time, and stabilizer system.
Methane, trichloro- is harmful to aquatic organisms.
Methane, trichloro- should not be discharged into drains, sewers, soil, surface water, or groundwater.
Methane, trichloro- evaporates readily but volatilization transfers contamination to air rather than eliminating the hazard.
Methane, trichloro- waste requires collection and disposal through an authorized chlorinated-solvent waste route.
Methane, trichloro- is transported under UN Number 1888.
Methane, trichloro- is assigned to UN Hazard Class 6.1 and Packing Group III in international safety information.
Methane, trichloro- transport packaging must prevent leakage, vapor release, breakage, and contact with incompatible materials.
Methane, trichloro- current transport classification should be confirmed for the jurisdiction, concentration, package, and mixture involved.
Methane, trichloro- quality control commonly includes appearance, assay, density, refractive index, water, acidity, stabilizer content, and nonvolatile residue.
Methane, trichloro- chromatographic grades may require limits for ultraviolet absorbance and interfering organic impurities.
Methane, trichloro- anhydrous grades require tighter water specifications than general reagent or technical grades.
Methane, trichloro- fluorocarbon grades require impurity control suited to downstream fluorination and fluoropolymer production.
PROPERTIES
Chemical Name: Methane, trichloro-
Common Name: Chloroform
Systematic Name: Trichloromethane
CAS Number: 67-66-3
EC Number: 200-663-8
Index Number: 602-006-00-4
UN Number: 1888
PubChem CID: 6212
Molecular Formula: CHCl₃
Molecular Weight: 119.38 g/mol
Exact Molecular Weight: Approximately 117.9144 Da
InChIKey: HEDRZPFGACZZDS-UHFFFAOYSA-N
Chemical Family: Chlorinated methanes
Chemical Classification: Volatile chlorinated organic solvent
Physical State: Liquid
Appearance: Clear, colorless liquid
Odor: Characteristic sweet or pleasant odor
Odor-Warning Reliability: Insufficient for occupational protection
Boiling Point: Approximately 61–62°C
NIST Average Boiling Point: Approximately 334.3 K
Melting Point: Approximately −64°C
Density at 20°C: Approximately 1.48 g/mL
Water Solubility at 20°C: Approximately 0.8 g/100 mL
Water-Solubility Classification: Slightly soluble
Vapor Pressure at 20°C: Approximately 21.2 kPa
Relative Vapor Density: Approximately 4.12
Relative Vapor–Air Mixture Density at 20°C: Approximately 1.7
Log Pow: Approximately 1.97
Ionization Potential: Approximately 11.42 eV
Volatility: High
Flash Point: Not applicable
Combustibility: Noncombustible under ordinary standard conditions
Special Combustibility Note: May become combustible with added flammable material or increased oxygen concentration
Primary Industrial Function: Intermediate for chlorodifluoromethane production
Primary Downstream Function: Feedstock route to fluoropolymers
Primary Laboratory Function: Extraction and reaction solvent
Additional Functions: Chromatography solvent, sample-preparation solvent, dichlorocarbene precursor, and analytical reference material
Stabilized Commercial Forms: Ethanol-stabilized or amylene-stabilized grades
Anhydrous Commercial Form: Available with controlled water content
Deuterated Form: Chloroform-d is a separate isotopically labeled material used for nuclear magnetic resonance spectroscopy
Chemical Stability: Stable under recommended controlled storage conditions
Thermal Stability: Decomposes under severe heating
Hazardous Thermal Products: Hydrogen chloride, phosgene, chlorine, carbon-containing fumes, and toxic smoke
Incompatible Materials: Strong bases, strong oxidants, alkalis, acetone, aluminium, magnesium, zinc, sodium, potassium, and other reactive metals
Material Compatibility: May attack certain plastics, rubber materials, coatings, adhesives, and seals
Acute Inhalation Effects: Coughing, shortness of breath, dizziness, drowsiness, headache, nausea, and unconsciousness
Acute Skin Effects: Redness, pain, dryness, irritation, and possible systemic absorption
Acute Eye Effects: Redness, pain, and irritation
Acute Ingestion Effects: Abdominal pain, nausea, vomiting, and central-nervous-system effects
Repeated-Exposure Target Organs: Liver, kidneys, respiratory tract, central nervous system, skin, and nasal tissues
Carcinogenicity Concern: Suspected of causing cancer
Reproductive Concern: Suspected of damaging fertility or the unborn child
Aquatic Hazard: Harmful to aquatic organisms
EU Occupational Exposure Limit: 2 ppm or 10 mg/m³ as an eight-hour time-weighted average with a skin notation
Cited Threshold Limit Value: 10 ppm as an eight-hour time-weighted average
NIOSH Recommended Limit: 2 ppm as a 60-minute short-term exposure limit for a potential occupational carcinogen
UN Hazard Class: 6.1
UN Packing Group: III
Recommended Storage: Original tightly closed container in a cool and ventilated area
Ventilation Requirement: Low-level or floor-level extraction because vapor is heavier than air
Environmental Precaution: Prevent entry into drains, soil, groundwater, and surface water
Current Data Requirement: Confirm grade purity, stabilizer type, water content, occupational limits, transport classification, and shelf life from current grade-specific technical and safety documentation.
FIRST AID
Inhalation:
Move the affected person immediately to fresh air.
Keep the person at rest in a position comfortable for breathing.
Do not allow the person to walk unassisted after significant Methane, trichloro- exposure.
Provide artificial respiration or oxygen only through trained personnel using appropriate protective equipment.
Obtain immediate medical attention because respiratory, neurological, liver, and kidney effects may be delayed.
Skin Contact:
Remove contaminated clothing, footwear, jewelry, and leather articles immediately.
Isolate contaminated clothing in a sealed container to prevent continued vapor release.
Rinse the affected skin with plenty of water or use an emergency shower.
Wash the skin gently with soap and water.
Obtain medical attention because Methane, trichloro- can be absorbed through the skin and cause systemic effects.
Eye Contact:
Rinse the eyes immediately with plenty of clean, gently flowing water.
Hold the eyelids open to ensure complete irrigation.
Remove contact lenses when present and easy to do, then continue rinsing.
Continue rinsing for at least 15 minutes.
Obtain prompt medical attention because redness, pain, and irritation may persist.
Ingestion:
Rinse the mouth thoroughly with water.
Do not induce vomiting.
Do not give anything to drink unless directed by qualified medical personnel or a poison center.
Never give anything by mouth to an unconscious or convulsing person.
Obtain immediate medical attention and provide the current Methane, trichloro- Safety Data Sheet.
Note to Physicians:
No substance-specific antidote should be assumed.
Provide supportive care and treat according to the patient’s symptoms and clinical condition.
Monitor respiratory function, neurological status, cardiac condition, liver function, kidney function, and fluid balance after significant exposure.
Consider delayed toxicity even when the initial examination appears reassuring.
Avoid unnecessary administration of substances that may increase cardiac sensitization or liver stress.
Use current poison-center or medical-toxicology guidance as the primary clinical reference.
HANDLING AND STORAGE
Handling:
Handle Methane, trichloro- only in accordance with strict industrial-hygiene and chemical-safety procedures.
Review the current technical specification and Safety Data Sheet before opening, transferring, sampling, or using the material.
Avoid all unnecessary contact with the skin, eyes, and clothing.
Do not breathe vapor, mist, aerosol, or decomposition fumes.
Use closed transfer, reaction, extraction, filtration, and recovery systems wherever practicable.
Open containers only inside an effective fume enclosure or locally exhausted handling station.
Minimize the duration and surface area of open-liquid exposure.
Use mechanically assisted transfer rather than pouring from large containers.
Do not use Methane, trichloro- for manual cleaning of skin, clothing, floors, or unventilated equipment.
Keep the material away from food, beverages, animal feed, medicines, and personal items.
Wash the hands, face, and exposed skin thoroughly after handling.
Prohibit alcohol consumption before, during, and immediately after occupational exposure because alcohol can increase harmful effects.
Ventilation:
Provide effective general ventilation and local exhaust ventilation.
Position extraction near floor level and other low points because Methane, trichloro- vapor is heavier than air.
Use enclosed fume hoods, ventilated process vessels, or closed solvent-handling cabinets for laboratory work.
Provide additional extraction at filling points, sampling ports, reactors, centrifuges, evaporators, waste containers, and solvent-recovery equipment.
Do not rely on odor to determine whether ventilation is adequate.
Monitor airborne concentrations where repeated, large-scale, heated, or open handling occurs.
Prevent vapor from entering pits, trenches, basements, drains, sewers, or confined spaces.
Use supplied-air or self-contained respiratory protection for emergencies, major spills, confined spaces, or conditions above approved respirator capabilities.
Select respiratory equipment through a documented occupational-exposure assessment.
Maintain ventilation continuously until contaminated areas have been verified safe.
Storage:
Store Methane, trichloro- only in its original or another specifically approved compatible container.
Keep the container tightly closed and correctly labeled.
Store the material in a cool, dry, shaded, and well-ventilated area.
Provide floor-level ventilation because vapor can accumulate in low spaces.
Store Methane, trichloro- in an area without direct drain or sewer access.
Protect containers from direct sunlight, severe heat, flames, welding operations, and hot surfaces.
Keep Methane, trichloro- separated from strong bases, caustics, strong oxidants, acetone, and reactive metals.
Keep Methane, trichloro- separated from aluminium, magnesium, zinc, sodium, potassium, and incompatible metal powders.
Do not store Methane, trichloro- with food, feed, medicines, or consumer goods.
Use secondary containment resistant to chlorinated solvents.
Prevent damage to stabilizer-containing material through inappropriate purification or prolonged storage.
Do not remove stabilizer unless required by a validated procedure and supported by strict storage and testing controls.
Record the stabilizer type, opening date, water content, and storage history where product quality is critical.
Use first-in, first-out stock rotation within the stated shelf life.
Inspect containers regularly for corrosion, swelling, leakage, damaged seals, discoloration, or pressure buildup.
Spill and Leak Procedures:
Evacuate the immediate danger area.
Prevent unprotected personnel from entering the contaminated zone.
Consult trained emergency-response personnel for significant releases.
Eliminate nearby heat sources and incompatible reactive chemicals when this can be done safely.
Provide maximum ventilation without spreading vapor into occupied areas.
Wear a fully protective chemical suit and self-contained breathing apparatus for major or uncontrolled releases.
Stop the source of the leak only when this can be done without personal risk.
Prevent Methane, trichloro- from entering drains, sewers, pits, basements, soil, groundwater, or surface water.
Collect free liquid into sealable and compatible recovery containers.
Absorb remaining liquid with sand, earth, or another verified inert and compatible absorbent.
Do not use reactive metal powders or chemically incompatible absorbents.
Place contaminated absorbent and disposable equipment in tightly closed and correctly labeled hazardous-waste containers.
Ventilate the affected area until air monitoring confirms that concentrations are controlled.
Dispose of recovered material through an authorized chlorinated-solvent waste-management route.
Report environmental releases as required by applicable regulations.
Handling Precautions:
Wear chemical-resistant gloves selected from documented permeation and breakthrough data for Methane, trichloro-.
Do not assume that ordinary latex, thin disposable gloves, or general-purpose rubber provide adequate protection.
Use tightly fitting chemical goggles during sampling, transfer, extraction, and equipment cleaning.
Wear a face shield in addition to goggles where splashing is reasonably foreseeable.
Use protective clothing and footwear resistant to chlorinated solvents.
Provide accessible eyewash and emergency-shower equipment near major handling areas.
Inspect gloves, clothing, hoses, seals, pumps, valves, gaskets, and transfer connections before use.
Use only equipment materials specifically confirmed as compatible with Methane, trichloro-.
Do not heat Methane, trichloro- with open flames, heating guns, unregulated hot plates, or exposed high-temperature elements.
Do not use Methane, trichloro- near welding, cutting, brazing, or other operations capable of forming phosgene.
Avoid contact with strong caustics, strong oxidants, acetone, aluminium, magnesium, zinc, sodium, and potassium.
Keep waste containers closed because solvent waste can generate substantial vapor exposure.
Verify stabilizer requirements before distillation, evaporation, or long-term storage.
Review the current technical specification, Safety Data Sheet, certificate of analysis, occupational limits, environmental requirements, and transport rules before production, formulation, laboratory use, storage, cleaning, or disposal.
