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1.CHEMICAL IDENTIFICATION & NOMENCLATURE
IUPAC Name: Poly(oxy-1,2-ethanediyl), α-sulfo-ω-hydroxy-, C10-16-alkyl ethers, sodium salts (related description) [Note: Precise IUPAC for polymer is complex]
Common Name: Sodium polynaphthalene sulfonate (SNF), Naphthalene sulfonate formaldehyde condensate
Trade Names: Sikament FF, Mighty 150, Daracem 100, Reheotek 700, Glenium 27
CAS Registry Number: 9084-06-4 (Primary), 36290-04-7 (alternative)
EC Number: 618-567-3
ECHA REACH Registration: 01-2119512639-33-XXXX
2.Synonyms:
Sodium polynaphthalenesulfonate,Poly(naphthalenesulfonic acid), sodium salt,Naphthalene-formaldehyde sulfonate polymer,SNF superplasticizer,NSF (Naphthalene Sulfonate Formaldehyde),PNS (Polynaphthalene Sulfonate),Formaldehyde condensate of methylnaphthalenesulfonic acid, sodium salt,Sodium methylnaphthalenesulfonate polymer
Chemical Family: Sulfonated naphthalene-formaldehyde polycondensate
Molecular Formula: (C₁₁H₆NaO₃S)ₙ • (CH₂)ₙ • (H₂O)ₓ
Average Molecular Weight: 1,500 - 10,000 g/mol (n ≈ 5-30)
Polymerization Degree: Typically 5-15 naphthalene units
Chemical Structure: Linear or slightly branched polymer with naphthalene rings connected by methylene (-CH₂-) bridges, each ring containing a sulfonate (-SO₃Na) group. The degree of sulfonation is typically >85%.
3. PHYSICO-CHEMICAL PROPERTIES (EXTENDED TABLE)
Property, Value/Specification, Test Method/Standard, Significance
Appearance, Brown to dark brown free-flowing powder or viscous liquid (40% solution), Visual, Quality indicator
Active Content (Solid), 90-95% (high-grade), 75-85% (technical), Gravimetric (105°C to constant weight), Performance basis
Moisture Content, ≤ 5.0%, ISO 4318 / Karl Fischer, Storage stability
pH (20% Solution), 7.5 - 9.5, ASTM E70 / ISO 4316, Corrosivity, compatibility
Bulk Density, 0.55 - 0.75 g/cm³, ASTM B329-06, Handling, dosing
Ash Content (as Na₂SO₄), 10-20%, ISO 4321, Inert filler content
Viscosity (40% aq., 25°C), 100-300 mPa·s, Brookfield LV, spindle #2, Pumpability
Surface Tension (1% solution), 68-72 mN/m, Du Noüy Ring / ISO 304, Wetting ability
Foaming Capacity, Very low (collapse <30s), Ross-Miles / ASTM D1173, Concrete application suitability
Solubility in Water, Complete, ≥ 500 g/L at 20°C, OECD 105, Ease of use
Chloride Content, ≤ 0.1%, Mohr titration / ASTM D512, Corrosion risk in concrete
Alkalinity (as Na₂O), 3-5%, Acid-base titration, Handling safety
Molecular Weight Distribution, Mw: 2,000-6,000 g/mol
Mn: 1,500-3,000 g/mol
PDI: 1.3-2.5, GPC/SEC (PEG calibration), Performance consistency
4. TECHNICAL FUNCTIONS & MECHANISM OF ACTION
Primary Mechanism: Electrosteric Stabilization
Adsorption: The polymer chains adsorb onto cement particles via multiple anchoring points (sulfonate groups interacting with Ca²⁺ sites).
Electrostatic Repulsion: Ionized sulfonate groups impart strong negative zeta potential (-40 to -60 mV).
Steric Hindrance: Extended polymer chains (30-50 Å) create physical barriers preventing particle approach.
Deflocculation: Breaks down cement agglomerates, releasing trapped water.
Key Performance Parameters:
Water Reduction: 15-30% at equal workability
Slump Increase: 150-250 mm at equal w/c ratio
Strength Development: +20-40% at 28 days
Air Entrainment: <2% (non-air entraining)
5. INDUSTRIAL & COMMERCIAL APPLICATIONS
5.1. Primary Application: Concrete Technology
High-Range Water Reducer (HRWR): ASTM C494 Type F & G, EN 934-2
Applications:
Ready-Mix Concrete: Slump retention for long haul times
Precast Concrete: Early strength development, demolding <18 hours
Self-Compacting Concrete (SCC): Essential component for flowability
High-Performance Concrete: w/c <0.35, strength >60 MPa
Shotcrete: Improved pumpability and reduced rebound
Mass Concrete: Reduced thermal cracking (lower cement content)
5.2. Secondary Applications:
Ceramics: Deflocculant in clay slips, reducing water content 20-30%
Gypsum Board: Stucco dispersant, improving paper bond strength
Oil Well Drilling: Fluid loss reducer in cement slurries (API Spec 10A)
Textile Printing: Thickener and dispersant for pigment pastes
Agricultural Suspensions: Stabilizer for flowable concentrates
6. REGULATORY STATUS & CERTIFICATIONS
Global Regulatory Approvals:
US EPA: Listed in TSCA Inventory; exempt from tolerance
EU REACH: Registered 2010, no SVHC classification
FDA: 21 CFR 175.105 - Adhesives; 176.170 - Paper coatings
NSF/ANSI 61: Certified for drinking water systems
EN 934-2: European standard for concrete admixtures
ISO 9001: Quality management systems
Environmental Classifications:
GHS Classification: Not classified as hazardous
OCED 301B Biodegradability: 40-60% in 28 days (readily biodegradable)
Water Hazard Class (WGK): 1 (slightly hazardous to water)
BCF (Bioaccumulation): <100 (no bioaccumulation)
7. TOXICOLOGICAL & ECOLOGICAL PROFILE
7.1. Human Health Assessment:
Acute Oral Toxicity (LD₅₀ Rat): >5,000 mg/kg (Category 5)
Acute Dermal Toxicity (LD₅₀ Rabbit): >2,000 mg/kg
Skin Irritation (Rabbit): Non-irritating (OECD 404)
Eye Irritation (Rabbit): Mildly irritating (OECD 405)
Skin Sensitization (Guinea Pig): Negative (OECD 406, Buehler)
Mutagenicity (Ames): Negative (OECD 471)
Chronic Toxicity: NOAEL 1,000 mg/kg/day (90-day rat study)
7.2. Environmental Fate:
Hydrolysis: Stable at pH 4-10
Photodegradation: DT₅₀ = 15-30 days (simulated sunlight)
Soil Adsorption (Koc): 200-500 L/kg (moderate mobility)
Aquatic Toxicity:
Daphnia magna (48h EC₅₀): >100 mg/L
Fish (96h LC₅₀): >100 mg/L (Rainbow trout)
Algae (72h EC₅₀): >100 mg/L
Wastewater Treatment: 85-95% removal by activated sludge
8. HANDLING, STORAGE & TRANSPORTATION
8.1. Storage Conditions:
Temperature: 5-40°C (avoid freezing for solutions)
Humidity: <75% RH (powder)
Container: Original sealed bags (25 kg paper/PE) or drums
Shelf Life: 24 months (powder), 12 months (40% solution)
8.2. Personal Protective Equipment:
Minimum PPE: Safety glasses, dust mask (N95), gloves (nitrile)
Engineering Controls: Local exhaust for powder handling
Hygiene Measures: Wash hands after handling, no eating/drinking in area
8.3. Spill Management:
Small Spills: Sweep/vacuum, transfer to container
Large Spills: Contain with inert material, collect in containers
Disposal: According to local regulations, landfill authorized for chemicals
8.4. Transportation:
UN Number: Not regulated
Transport Class: Not dangerous goods
Packaging Group: III (if regulated)
SAFETY INFORMATION ABOUT CONDENSED METHYL NAPHTHALENE SULFONATE, SODIUM SALT
First aid measures:
Description of first aid measures:
General advice:
Consult a physician.
Show this safety data sheet to the doctor in attendance.
Move out of dangerous area:
If inhaled:
If breathed in, move person into fresh air.
If not breathing, give artificial respiration.
Consult a physician.
In case of skin contact:
Take off contaminated clothing and shoes immediately.
Wash off with soap and plenty of water.
Consult a physician.
In case of eye contact:
Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician.
Continue rinsing eyes during transport to hospital.
If swallowed:
Do NOT induce vomiting.
Never give anything by mouth to an unconscious person.
Rinse mouth with water.
Consult a physician.
Firefighting measures:
Extinguishing media:
Suitable extinguishing media:
Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
Special hazards arising from the substance or mixture
Carbon oxides, Nitrogen oxides (NOx), Hydrogen chloride gas
Advice for firefighters:
Wear self-contained breathing apparatus for firefighting if necessary.
Accidental release measures:
Personal precautions, protective equipment and emergency procedures
Use personal protective equipment.
Avoid breathing vapours, mist or gas.
Evacuate personnel to safe areas.
Environmental precautions:
Prevent further leakage or spillage if safe to do so.
Do not let product enter drains.
Discharge into the environment must be avoided.
Methods and materials for containment and cleaning up:
Soak up with inert absorbent material and dispose of as hazardous waste.
Keep in suitable, closed containers for disposal.
Handling and storage:
Precautions for safe handling:
Avoid inhalation of vapour or mist.
Conditions for safe storage, including any incompatibilities:
Keep container tightly closed in a dry and well-ventilated place.
Containers which are opened must be carefully resealed and kept upright to prevent leakage.
Storage class (TRGS 510): 8A: Combustible, corrosive hazardous materials
Exposure controls/personal protection:
Control parameters:
Components with workplace control parameters
Contains no substances with occupational exposure limit values.
Exposure controls:
Appropriate engineering controls:
Handle in accordance with good industrial hygiene and safety practice.
Wash hands before breaks and at the end of workday.
Personal protective equipment:
Eye/face protection:
Tightly fitting safety goggles.
Faceshield (8-inch minimum).
Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).
Skin protection:
Handle with gloves.
Gloves must be inspected prior to use.
Use proper glove
removal technique (without touching glove's outer surface) to avoid skin contact with this product.
Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices.
Wash and dry hands.
Full contact:
Material: Nitrile rubber
Minimum layer thickness: 0.11 mm
Break through time: 480 min
Material tested:Dermatril (KCL 740 / Aldrich Z677272, Size M)
Splash contact
Material: Nitrile rubber
Minimum layer thickness: 0.11 mm
Break through time: 480 min
Material tested:Dermatril (KCL 740 / Aldrich Z677272, Size M)
It should not be construed as offering an approval for any specific use scenario.
Body Protection:
Complete suit protecting against chemicals, The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace.
Respiratory protection:
Where risk assessment shows air-purifying respirators are appropriate use a fullface respirator with multi-purpose combination (US) or type ABEK (EN 14387) respirator cartridges as a backup to engineering controls.
If the respirator is the sole means of protection, use a full-face supplied air respirator.
Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU).
Control of environmental exposure
Prevent further leakage or spillage if safe to do so.
Do not let product enter drains.
Discharge into the environment must be avoided.
Stability and reactivity:
Chemical stability:
Stable under recommended storage conditions.
Incompatible materials:
Strong oxidizing agents:
Hazardous decomposition products:
Hazardous decomposition products formed under fire conditions.
Carbon oxides, Nitrogen oxides (NOx), Hydrogen chloride gas.
Disposal considerations:
Waste treatment methods:
Product:
Offer surplus and non-recyclable solutions to a licensed disposal company.
Contact a licensed professional waste disposal service to dispose of this material.
Contaminated packaging:
Dispose of as unused product
