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2-Methylhydroquinone is an aromatic organic compound with the molecular formula C₇H₈O₂, featuring a benzene ring with two hydroxyl groups in the para position and a methyl group, giving it strong antioxidant, reducing, and radical-scavenging properties.
2-Methylhydroquinone is most widely used as a polymerization inhibitor to prevent spontaneous polymerization during the manufacturing, storage, and transport of unsaturated monomers such as styrene, butadiene, and acrylates, helping maintain product quality and extend shelf life.
Beyond its inhibitor function, 2-Methylhydroquinone serves as a chemical intermediate in the synthesis of dyes, agrochemicals, antioxidants, and pharmaceuticals, and as a stabilizer in certain resins, coatings, and industrial formulations.
CAS Number: 95-71-6
EC Number: 202-444-8
Molecular Formula: C7H8O2
Molecular Weight: 124.14 g/mol
Synonyms: Toluhydroquinone, 2-Toluhydroquinone, 95-71-6, 2-methylbenzene-1,4-diol, 2,5-Dihydroxytoluene, Toluhydroquinone, p-Toluhydroquinone, Toluquinol, p-Toluquinol, Tolylhydroquinone, p-Toluhydroquinol, 2,5-Toluenediol, Methyl-p-hydroquinone, 1,4-Benzenediol, 2-methyl-, 1,4-Dihydroxy-2-methylbenzene, 2-Methyl-1,4-benzenediol, METHYL HYDROQUINONE, Hydroquinone, methyl-, Hydroquinone, tolyl-, Pyrolin, 2-Methyl-1,4-hydroquinone, NSC 4962, UNII-332W51E0OC, MFCD00002345, NSC4962, 332W51E0OC, EINECS 202-443-7, BRN 2041489, 2-Methyl-benzene-1,4-diol, methylhydroquinon, 3-methyl-1,4-dihydroxybenzene, AI3-14932, 2-methylhydroquinol, methyl-p-hydroquinol, monoToluhydroquinone, 2-methyl hydroquinone, 2-Methyl-hydroquinone, monomethyl hydroquinone, 2-Methyl-p-hydroquinone, DSSTox_CID_876, Toluhydroquinone, 99%, 3-methyl-4-hydroxyphenol, 4-hydroxy-2-methylphenol, EC 202-443-7, 2-Methylbenzene-1,4-diole, DSSTox_RID_75840, Toluhydroquinone, >=99%, WLN: L6V DVJ X1, DSSTox_GSID_20876, SCHEMBL36349, 2,5-Dihydroxytoluene polymer, 2,5-DHTOP, 4-06-00-05866, 2-methyl-1,4-dihydroxybenzene, CHEMBL450917, WLN: L6V DVJ XR X1, 3-metyl-1,4-dihydroxy benzene, DTXSID4020876, 2-methyl-1,4-dihydroxy benzene, CHEBI:133842, BDBM176768, ZINC388086, NSC-4962, Tox21_200506, AKOS015856210, AC-4660, CS-W013533, MCULE-7035325950, CAS-95-71-6, NCGC00248664-01, NCGC00258060-01, AS-15442, CAS# 95-71-6, P353, FT-0613052, M0342, Toluhydroquinone, purum, >=98.0% (HPLC), E83005, US9688816, 8, Q1925586, W-109360, F0001-2277, N-a-Fmoc-N-?-allyloxycarbonyl-L-2,3-diaminopropionicacid, 7DV, 2-Methyl-p-hydroquinone, 1,4-Benzenediol, 2-methyl-, 202-443-7, 2041489, 2-Methyl-1,4-benzenediol, 2-Méthyl-1,4-benzènediol, 2-Methyl-1,4-benzoldiol, 2-Methylbenzene-1,4-diol, 2-Toluhydroquinone, 95-71-6, Toluhydroquinone, MFCD00002345, MX6700000, QR DQ B1, "1,4-BENZENEDIOL, 2-METHYL-", "1,4-BENZENEDIOL, 2-METHYL-"|"2-METHYLBENZENE-1,4-DIOL", "2-METHYLBENZENE-1,4-DIOL", p-toluquinol, 1-(3,4-Dihydroxyphenyl)-2-propanone, 1,4-Dihydroxy-2-methylbenzene, 135648-79-2, 140627-29-8, 2,4-DCT, 2,5-DHTOP, 2,5-Dihydroxytoluene, 2,5-Dihydroxytoluene, Toluhydroquinone, 2,5-Toluenediol, 202-443-7MFCD00002345, 202-445-8, 29763-99-3 , 2-METHYLHYDROQUI, 2-Toluhydroquinone;2,5-Dihydroxytoluene, 4-05-00-00815 , 4-06-00-05866, 437-50-3 , 65916-21-4, 78446-96-5, 7DV, 95-73-8 , 96937-50-7, EINECS 202-443-7, Gentisin, Hydroquinone, methyl-, Toluhydroquinone, Toluhydroquinone|2,5-Dihydroxytoluene, Methyl-p-hydroquinone, PHENOXY, 4-HYDROXY-2-METHYL-, S1, THQ (VAN), WLN: L6V DVJ X1, WLN: L6V DVJ XR X1
2-Methylhydroquinone is an aromatic organic compound chemically classified as a methyl-substituted hydroquinone, with the molecular formula C7H8O2.
Structurally, 2-Methylhydroquinone consists of a benzene ring with two hydroxyl groups in the para position and a single methyl group, giving it antioxidant and reducing properties.
2-Methylhydroquinone appears as a crystalline solid, typically white to pale beige, and is moderately soluble in water but more soluble in organic solvents like ethanol and ether.
2-Methylhydroquinone is used primarily as a polymerization inhibitor in the production and storage of monomers such as styrene and acrylates, helping to prevent unwanted polymer formation during processing and transport.
2-Methylhydroquinone also finds application as an intermediate in the synthesis of dyes, agrochemicals, and pharmaceuticals, as well as a stabilizer in certain industrial formulations.
2-Methylhydroquinone's chemical reactivity arises from the hydroxyl groups’ ability to donate hydrogen atoms, enabling it to act as a radical scavenger and protect sensitive compounds from oxidative degradation.
2-Methylhydroquinone is a versatile compound.
2-Methylhydroquinone finds many applications in the field of polymer science due to Ant good binding properties as well as 2-Methylhydroquinone strength.
2-Methylhydroquinone is an off-white crystalline solid with a molecular weight of 124.137 g/mol.
2-Methylhydroquinone has a characteristic odor and 2-Methylhydroquinone melting point is 262.4°F.
2-Methylhydroquinone is a reactive oxygen species (ROS) that can bind to DNA, forming covalent adducts.
2-Methylhydroquinone has been shown to have an optimum concentration of 10 μM, and the hydroxyl group on 2-Methylhydroquinone phenolic ring enables 2-Methylhydroquinone to form hydrogen bonding interactions with nucleic acids.
2-Methylhydroquinone has been shown to inhibit angiogenic process in vitro and in vivo, as well as inhibiting the growth of tumor cells by binding to DNA.
2-Methylhydroquinone also inhibits the transfer of methyl groups from methyl donors such as S-adenosylhomocysteine and methionine to acceptor molecules such as p-hydroxybenzoic acid.
2-Methylhydroquinone Chemical which is a tan to white crystalline solid.
2-Methylhydroquinone is a highly active inhibitor in the free radical polymerization of vinyl monomers and unsaturated polyesters.
2-Methylhydroquinone undergoes chemical reactions similar to those of hydroquinone.
The presence of a methyl group in the ortho position in the 2-Methylhydroquinone molecule is the slight structural and behavioral difference between 2-Methylhydroquinone and hydroquinone.
2-Methylhydroquinone or Toluquinol belongs to a class of compounds called Hydroquinones with one of the benzene hydrogens replaced by a methyl group.
2-Methylhydroquinone is produced by the oxidation of o-cresol by the mutants G103S, G103S/A107G, and G103S/A107T.
2-Methylhydroquinone is registered under the REACH Regulation and is manufactured in and / or imported to the European Economic Area, at ≥ 100 to < 1 000 tonnes per annum.
2-Methylhydroquinone is used by consumers, by professional workers (widespread uses), in formulation or re-packing and at industrial sites.
2-Methylhydroquinone is used as a stabilizer in acrylics and as an antioxidant for fatty esters, linseed oil and other inedible fats and oils.
Further research may identify additional product or industrial usages of this chemical.
2-Methylhydroquinone can be identified by different names, including:
2,5-Dihydroxytoluene 2,5-toluenediol, 2-methyl-1,4-benzenediol 2-2-Methylhydroquinone Methyl-p-hydroquinone, P-toluquinol, 2-Methylhydroquinone
2-Methylhydroquinone is an aromatic organic compound with the molecular formula C7H8O2, belonging to the class of methyl-substituted hydroquinones.
Structurally, 2-Methylhydroquinone features a benzene ring substituted with two hydroxyl groups in the para position and a methyl group in the ortho position relative to one of the hydroxyl groups.
This configuration gives 2-Methylhydroquinone strong antioxidant, reducing, and radical-scavenging properties, making it a valuable stabilizer in industrial processes.
In its pure form, 2-Methylhydroquinone appears as a crystalline solid, ranging in color from white to pale beige, with a faint phenolic odor.
2-Methylhydroquinone is sparingly soluble in water but dissolves readily in organic solvents such as ethanol, ether, and acetone.
Industrially, 2-Methylhydroquinone is most widely used as a polymerization inhibitor to prevent spontaneous polymerization during the manufacturing, storage, and transport of unsaturated monomers such as styrene, butadiene, and acrylates.
This helps maintain product quality, extend storage stability, and reduce the risk of process disruptions.
Beyond its inhibitor function, 2-Methylhydroquinone serves as a chemical intermediate in the synthesis of dyes, agrochemicals, antioxidants, and pharmaceutical active ingredients, and can also be used as a stabilizer in certain resins and coatings.
2-Methylhydroquinone's mode of action is based on hydrogen atom donation from the hydroxyl groups, which neutralizes reactive free radicals and prevents oxidative degradation.
While highly effective in small concentrations, 2-Methylhydroquinone should be handled with care, as it can cause skin and eye irritation and may undergo oxidation if exposed to air and light for prolonged periods.
For this reason, 2-Methylhydroquinone is typically stored in tightly sealed containers under cool, dry, and inert conditions to preserve stability and performance.
Applications of 2-Methylhydroquinone:
2-Methylhydroquinone is a marine fungus metabolite, showing activity as an angiosupressor that interferes with the Akt pathway.
Allows for screening of novel inhibitors of angiogenesis.
2-Methylhydroquinone is used as a general adhesive and binding agent in various preparations.
In the automotive industry, 2-Methylhydroquinone is widely used for repair as well as maintenance and also caring for automobiles viz, auto shampoo, wax, polish, brake grease.
Binders are the main ingredient of any paint.
Binders are polymers that form a continuous film on a solid surface.
Binders ensure that the coating is evenly spread and well adsorbed on to the surface.
The binders also have the major role of holing the pigment molecules responsible for color evenly across the coating.
2-Methylhydroquinone is one of the most widely used a binder for paints.
The technology of thermal insulation of buildings is one of the many steps that men have taken for a sustainable future.
Thermal insulation of buildings reduces energy consumption and prevent heat loss or gain by buildings.
2-Methylhydroquinone is used for thermal insulation as well as soundproofing.
In the construction of buildings and ships, 2-Methylhydroquinone is used for plumbing, electrical work, and also bricklaying.
2-Methylhydroquinone is also used to repair sporting boats.
2-Methylhydroquinone can be used as a reactant to prepare:
A semiflexible thermotropic polyester via polycondensation reaction with 4,4′-sebacoyldioxydibenzoyl chloride.
A sesquiterpene (±)-helibisabonol A.
-poly{hexakis[(methyl)(4-hydroxyphenoxy)]cyclotriphosphazene} by reacting with hexachlorocyclotriphosphazene.
-6-Hydroxy-4,7-dimethyl-2H-1-benzopyran-2-one by treating with ethyl acetoacetate in the presence of H2SO4 as a catalyst.
Application Area:
2-Methylhydroquinone is used as a stabilizer for unsaturated polyesters and as an antioxidant for fatty esters, linseed oil, and other nonfood fats and oils
2-Methylhydroquinone is used as a stabilizer to inhibit peroxide formation in ethers, chlorinated hydrocarbons and ethyl cellulose
2-Methylhydroquinone is also used as an intermediate to manufacture other stabilizers, dyes, pharmaceuticals and plasticizers.
Uses of 2-Methylhydroquinone:
2-Methylhydroquinone is primarily used as a polymerization inhibitor to prevent unwanted or premature polymerization of reactive monomers such as styrene, butadiene, isoprene, acrylonitrile, and various acrylates during production, storage, and transportation.
By scavenging free radicals, 2-Methylhydroquinone helps maintain monomer purity, extend shelf life, and ensure process stability in polymer manufacturing.
In addition to its inhibitor role, 2-Methylhydroquinone serves as a chemical intermediate in the synthesis of dyes, antioxidants, agrochemicals, and pharmaceuticals, where its reactive aromatic ring and hydroxyl groups allow for further functionalization.
2-Methylhydroquinone is also employed as a stabilizer in certain resin, coating, and adhesive formulations, protecting them from oxidative degradation during storage and use.
In specialty chemical production, 2-Methylhydroquinone may be used in fine organic synthesis as a reducing agent or radical quencher, enabling controlled reaction pathways.
2-Methylhydroquinone's effectiveness in low concentrations and broad compatibility with organic systems make it a valuable additive in industries ranging from plastics and synthetic rubber to specialty chemicals and coatings.
Antioxidant, polymerization inhibitor.
2-Methylhydroquinone is used as stabilizer and antioxidant in aerylic monomers to prevent polymerization.
2-Methylhydroquinone is a marine fungus metabolite, showing activity as an angiosupressor that interferes with the Akt pathway.
Allows for screening of novel inhibitors of angiogenesis.
Consumer Uses:
2-Methylhydroquinone is used in the following products: coating products.
Other release to the environment of 2-Methylhydroquinone is likely to occur from: indoor use and outdoor use resulting in inclusion into or onto a materials (e.g. binding agent in paints and coatings or adhesives).
Uses at industrial sites:
2-Methylhydroquinone is used in the following products: coating products, laboratory chemicals, polymers, fillers, putties, plasters, modelling clay and adhesives and sealants.
2-Methylhydroquinone is used for the manufacture of: chemicals and plastic products.
Release to the environment of 2-Methylhydroquinone can occur from industrial use: as processing aid, as processing aid, in the production of articles, as an intermediate step in further manufacturing of another substance (use of intermediates), in processing aids at industrial sites and for thermoplastic manufacture.
Widespread uses by professional workers:
2-Methylhydroquinone is used in the following products: coating products, fillers, putties, plasters, modelling clay and polymers.
2-Methylhydroquinone is used in the following areas: building & construction work.
2-Methylhydroquinone is used for the manufacture of: plastic products.
Other release to the environment of 2-Methylhydroquinone is likely to occur from: indoor use (e.g. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners) and outdoor use resulting in inclusion into or onto a materials (e.g. binding agent in paints and coatings or adhesives).
Benefits of 2-Methylhydroquinone:
2-Methylhydroquinone offers several significant benefits that make it valuable in industrial, chemical, and materials applications.
2-Methylhydroquinone's strong antioxidant and radical-scavenging properties enable it to effectively inhibit unwanted polymerization in reactive monomers such as styrene, acrylates, and butadiene, helping maintain product stability during production, storage, and transport.
Compared to some other inhibitors, 2-Methylhydroquinone is effective at low concentrations, making it a cost-efficient stabilizer.
2-Methylhydroquinone's molecular structure allows for high reactivity control, enabling precise process management in polymer manufacturing.
2-Methylhydroquinone is also a versatile chemical intermediate, serving as a building block in the synthesis of pharmaceuticals, dyes, agrochemicals, and specialty chemicals.
As a stabilizer in coatings, adhesives, and resins, 2-Methylhydroquinone helps extend shelf life and prevent oxidative degradation, improving overall product performance.
2-Methylhydroquinone's ability to function both as a reducing agent and as an oxidation inhibitor gives it dual utility in fine chemical synthesis, where control over reaction pathways is essential.
When handled and stored properly, 2-Methylhydroquinone provides long-term stability, compatibility with diverse organic systems, and reliable performance, making it a preferred choice in multiple industrial sectors.
Manufacturing of 2-Methylhydroquinone:
2-Methylhydroquinone (MeHQ) or methyl ether derivative thereof is prepared by contacting paramethoxyphenol or para-dimethoxybenzene with an acid catalyst, preferably a solid acid catalyst, at a temperature ranging from 100° to 300° C.
Production of 2-Methylhydroquinone:
2-Methylhydroquinone is most commonly produced through the selective methylation of hydroquinone or via oxidation–reduction pathways starting from methyl-substituted phenols.
In the methylation route, hydroquinone undergoes Friedel–Crafts alkylation or methyl ether formation followed by demethylation, introducing a methyl group to the aromatic ring in the ortho position relative to a hydroxyl group.
Catalysts such as aluminum chloride, zinc chloride, or solid acid resins are typically employed to improve yield and positional selectivity.
Another commercial method involves the oxidation of p-cresol to 2-methyl-p-benzoquinone, followed by selective catalytic hydrogenation of the quinone to produce 2-Methylhydroquinone with high purity.
This two-step approach is valued for 2-Methylhydroquinone's control over by-products and scalability.
In some cases, p-toluidine or related aromatic amines can also be converted to 2-Methylhydroquinone through diazotization, followed by hydrolysis and oxidation-reduction steps, although this is less common industrially.
After synthesis, the crude product is purified via recrystallization or vacuum distillation to remove unreacted starting materials, isomers, and colored impurities.
Production is typically carried out in inert atmospheres (nitrogen or argon) to minimize oxidation during processing.
Final storage is in sealed, light-resistant containers under cool, dry conditions to prevent gradual oxidation to methylbenzoquinone and to maintain product stability.
Biochem/physiol Actions of 2-Methylhydroquinone:
2-Methylhydroquinone (Toluquinol) inhibits the growth of endothelial and tumor cells in culture in the micromolar range and is a promising drug candidate in the treatment of cancer and other angiogenesis-related pathologies.
Handling and Storage of 2-Methylhydroquinone:
Handling:
Avoid breathing dust or vapors.
Prevent contact with skin, eyes, and clothing.
Use only in well-ventilated areas or under fume extraction.
Avoid prolonged exposure to air and light to prevent oxidation.
Storage:
Store in tightly closed, light-resistant containers in a cool, dry, and well-ventilated area away from heat sources and incompatible chemicals such as strong oxidizers and bases.
Maintain inert atmosphere (nitrogen) for long-term stability.
Stability and Reactivity of 2-Methylhydroquinone:
Chemical Stability:
Stable under recommended storage conditions but gradually oxidizes in air and light, forming methylbenzoquinone.
Reactivity:
Reacts with strong oxidizing agents; may undergo slow oxidation in the presence of air.
Hazardous Decomposition Products:
Carbon monoxide (CO), carbon dioxide (CO₂), and irritating phenolic vapors may form upon heating or burning.
First Aid Measures of 2-Methylhydroquinone:
Inhalation:
Move victim to fresh air.
Seek medical attention if respiratory irritation occurs.
Skin Contact:
Immediately wash skin with soap and plenty of water.
Remove contaminated clothing.
Seek medical help if irritation persists.
Eye Contact:
Rinse cautiously with water for at least 15 minutes.
Remove contact lenses if easy to do.
Obtain medical attention.
Ingestion:
Rinse mouth.
Do not induce vomiting unless directed by medical personnel.
Seek immediate medical advice.
Firefighting Measures of 2-Methylhydroquinone:
Suitable Extinguishing Media:
Use dry chemical, foam, carbon dioxide (CO₂), or water spray.
Special Hazards:
Combustion can produce toxic fumes including CO, CO₂, and phenolic vapors.
Protective Equipment:
Firefighters should wear self-contained breathing apparatus (SCBA) and full protective gear.
Accidental Release Measures of 2-Methylhydroquinone:
Personal Precautions:
Wear gloves, goggles, and protective clothing.
Avoid generating dust.
Ensure adequate ventilation.
Environmental Precautions:
Prevent entry into drains, sewers, and waterways.
Spill Cleanup:
For small spills, sweep up and place in labeled containers for disposal.
Avoid dry sweeping to prevent dust dispersion; dampen with water if necessary.
Exposure Controls / Personal Protective Equipment of 2-Methylhydroquinone:
Engineering Controls:
Use local exhaust ventilation or process enclosures to minimize exposure.
Eye/Face Protection:
Safety goggles or face shield.
Skin Protection:
Protective gloves (nitrile, neoprene) and lab coat or chemical-resistant clothing.
Respiratory Protection:
Use a dust mask or respirator (P2/N95 or higher) if airborne particles may be generated.
General Hygiene:
Wash hands thoroughly after handling.
Do not eat, drink, or smoke in work areas.
Identifiers of 2-Methylhydroquinone:
CAS: 95-71-6
Molecular Formula: C7H8O2
Molecular Weight (g/mol): 124.14
MDL Number: MFCD00002345
InChI Key: CNHDIAIOKMXOLK-UHFFFAOYSA-N
PubChem CID: 7253
IUPAC Name: 2-methylbenzene-1,4-diol
SMILES: CC1=CC(O)=CC=C1O
Chemical Name (IUPAC): 2-Methylbenzene-1,4-diol
Common Name: 2-Methylhydroquinone
Molecular Formula: C₇H₈O₂
Molecular Weight: 124.14 g/mol
CAS Number: 95-71-6
EC (EINECS) Number: 202-444-8
UNII: 4X0AUX79HZ (FDA Unique Ingredient Identifier)
PubChem CID: 7351
ChemSpider ID: 7072
RTECS Number: JU4375000
HS Code (Customs): 2907.29 – Phenols; polyphenols
InChI: InChI=1S/C7H8O2/c1-5-2-3-6(8)4-7(5)9/h2-4,8-9H,1H3
InChI Key: SWLFQWWJYLMHHN-UHFFFAOYSA-N
SMILES: Cc1ccc(cc1O)O
GHS Classification: Eye Irritant (Category 2), Skin Irritant (Category 2)
Appearance: White to pale beige crystalline solid
Melting Point: 125–128 °C
Boiling Point: ~280 °C (decomposes)
Solubility: Sparingly soluble in water; soluble in ethanol, ether, acetone
Odor: Mild phenolic odor
Molecular Formula: C₇H₈O₂
Molecular Weight: 124.14 g/mol
CAS Number: 95-71-6
EC (EINECS) Number: 202-444-8
UNII (FDA): 4X0AUX79HZ
PubChem CID: 7351
ChemSpider ID: 7072
RTECS Number: JU4375000
HS Code: 2907.29 – Phenols; polyphenols
InChI: InChI=1S/C7H8O2/c1-5-2-3-6(8)4-7(5)9/h2-4,8-9H,1H3
InChI Key: SWLFQWWJYLMHHN-UHFFFAOYSA-N
SMILES: Cc1ccc(cc1O)O
Properties of 2-Methylhydroquinone:
Molecular Weight: 124.14
XLogP3: 1
Hydrogen Bond Donor Count: 2
Hydrogen Bond Acceptor Count: 2
Rotatable Bond Count: 0
Exact Mass: 124.052429494
Monoisotopic Mass: 124.052429494
Topological Polar Surface Area: 40.5 Ų
Heavy Atom Count: 9
Complexity: 92.9
Isotope Atom Count: 0
Defined Atom Stereocenter Count: 0
Undefined Atom Stereocenter Count: 0
Defined Bond Stereocenter Count: 0
Undefined Bond Stereocenter Count: 0
Covalently-Bonded Unit Count: 1
Compound Is Canonicalized: Yes
Quality Level: 100
Assay: 99%
Form: solid
Autoignition temp.: 851 °F
mp: 128-130 °C (lit.)
SMILES string: Cc1cc(O)ccc1O
InChI: 1S/C7H8O2/c1-5-4-6(8)2-3-7(5)9/h2-4,8-9H,1H3
InChI key: CNHDIAIOKMXOLK-UHFFFAOYSA-N
Product Number: M0342
Purity / Analysis Method: >98.0%(T)
Molecular Formula / Molecular Weight: C7H8O2 = 124.14
Physical State (20 deg.C). Solid
Store Under Inert Gas: Store under inert gas
Condition to Avoid: Light Sensitive,Air Sensitive
CAS RN: 95-71-6
Reaxys Registry Number: 2041489
PubChem Substance ID: 87572412
SDBS (AIST Spectral DB): 3439
MDL Number: MFCD00002345
Melting point: 128-130 °C(lit.)
Boiling point: 285°C
Density: 1.1006 (rough estimate)
refractive index: 1.4922 (estimate)
Flash point: 172 °C
storage temp.: Store below +30°C.
solubility: 77g/l
form: Crystalline Powder
pka: pK1:10.03;pK2:11.62 (25°C)
color: Grayish-white to light beige
Water Solubility: 77 g/L (25 ºC)
BRN: 2041489
Stability: Stable. Combustible. Incompatible with oxidizing agents, strong bases.
InChIKey: CNHDIAIOKMXOLK-UHFFFAOYSA-N
CAS DataBase Reference: 95-71-6(CAS DataBase Reference)
EWG's Food Scores: 1
FDA UNII: 332W51E0OC
NIST Chemistry Reference: 1,4-Benzenediol, 2-methyl-(95-71-6)
EPA Substance Registry System: 2-2-Methylhydroquinone (95-71-6)
Flash point: 172 °C
Ignition temperature: 468 °C
Melting Point: 128 - 130 °C
Solubility: 77 g/l
Specifications of 2-Methylhydroquinone:
Assay (HPLC, area%): ≥ 97.0 % (a/a)
Melting range (lower value): ≥ 125 °C
Melting range (upper value): ≤ 128 °C
Identity (IR): passes test
Purity: >98.0%(T)
Names of 2-Methylhydroquinone:
Regulatory process names:
2-Toluhydroquinone
2-Toluhydroquinone
CAS names:
1,4-Benzenediol, 2-methyl-
IUPAC names:
2-METHYL HYDROQUINONE
2-Methyl-1,4-benzenediol
2-methylbenzene-1,4-diol
2-Toluhydroquinone
2-Toluhydroquinone
Toluhydroquinone
Toluhydroquinone
Other identifiers:
135648-79-2
140627-29-8
29763-99-3
65916-21-4
78446-96-5
95-71-6
96937-50-7
