Description

2-Methylnaphthalene (CAS No. 91-57-6) is a high-purity aromatic hydrocarbon with the molecular formula C₁₁H₁₀. This white crystalline solid is a derivative of naphthalene, featuring a methyl group at the 2-position, and is widely utilized in organic synthesis and industrial applications. With a melting point of 34-36°C and boiling point of 241-242°C, it exhibits excellent solubility in organic solvents like ethanol and ether. Ideal for researchers and scientists, our 2-Methylnaphthalene is rigorously tested to ensure ≥98% purity (GC), making it suitable for use as a precursor in dyes, resins, and pharmaceuticals. Packaged under inert gas to maintain stability, this product is available in various quantities to meet both laboratory and bulk production needs.

Properties

• CAS Number: 91-57-6
• Complexity: 128
• IUPAC Name: 2-methylnaphthalene
• InChI: InChI=1S/C11H10/c1-9-6-7-10-4-2-3-5-11(10)8-9/h2-8H,1H3
• InChI Key: QIMMUPPBPVKWKM-UHFFFAOYSA-N
• LogP: log Kow = 3.86
• Exact Mass: 142.078250319
• Molecular Formula: C11H10
• Molecular Weight: 142.20
• SMILES: CC1=CC2=CC=CC=C2C=C1
• Monoisotopic Mass: 142.078250319
• Physical Description: 2-methylnaphthalene is a white crystalline solid.
• Color/Form: Monoclinic crystals from alcohol
• Boiling Point: 466 to 468 °F at 760 mmHg
• Melting Point: 94.3 °F
• Flash Point: 208 °F
• Solubility: less than 1 mg/mL at 70 °F
• Density: 1.0058 at 68 °F – Denser than water; will sink
• Vapor Pressure: 0.05 [mmHg]
• Henry’s Law Constant: Henry’s Law constant = 5.18X10-4 atm-cu m/mol at 25 °C
• Odor Threshold: Odor Threshold Low: 0.01 [ppm]
• Refractive Index: Index of refraction: 1.6019 at 20 °C
• Synonyms: 2-METHYLNAPHTHALENE, 91-57-6, beta-Methylnaphthalene, Naphthalene, 2-methyl-, .beta.-Methylnaphthalene, Naphthalene, beta-methyl-, HSDB 5274, beta-methyl naphthalenes, NSC 3575, EINECS 202-078-3, S8MCX3C16H, Methyl-2-naphthalene, DTXSID4020878, CHEBI:50720, AI3-17554, NSC-3575, DTXCID60878, EC 202-078-3, B-methylnaphthalene, betaMethylnaphthalene, betaMethyl naphthalene, Beta.-methylnaphthalene, Naphthalene, beta-methyl, 2-Methylnaphthalene (beta), NAPHTALENE,2-METHYL MFC11 H10, 202-078-3, inchi=1/c11h10/c1-9-6-7-10-4-2-3-5-11(10)8-9/h2-8h,1h, 2-methyl-naphthalene, CHEMBL195895, C11H10, MFCD00004118, 2-?Methylnaphthalene, NAPHTALENE,2-METHYL MFC11 H10, 7419-61-6, 2-Methylnaphthalene, analytical standard, 2-Naphthylmethyl radical, UNII-S8MCX3C16H, Naphthalene, 2-methyl-; 2-Methylnaphthalene; NSC 3575; ss-Methylnaphthalene, 2-methyInaphthalene, 2-methyl naphthalene, naphthalene, 2-methyl, beta-methyl-naphthalene, bmse000537, SCHEMBL36452, SCHEMBL36453, SCHEMBL65563, SCHEMBL68114, SCHEMBL458019, SCHEMBL645286, SCHEMBL645484, SCHEMBL645539, SCHEMBL645977, SCHEMBL996821, SCHEMBL996822, SCHEMBL1264387, SCHEMBL2250860, SCHEMBL2251040, SCHEMBL2252794, SCHEMBL2254594, SCHEMBL3855434, SCHEMBL5081264, SCHEMBL5603692, SCHEMBL5604079, SCHEMBL8962336, WLN: L66J C1, SCHEMBL13387302, NSC3575, 2-Methylnaphthalene (beta), 97%, Tox21_200839, AC-615, BDBM50159241, SBB060085, STL283950, AKOS000120035, FM37545, MSK000761-100H, CAS-91-57-6, NCGC00091415-01, NCGC00091415-02, NCGC00258393-01, BS-22305, DB-002463, M0372, NS00002503, ST51046326, EN300-20114, G77261, 2-Methylnaphthalene 10 microg/mL in Cyclohexane, 2-Methylnaphthalene 10 microg/mL in Acetonitrile, 2-methylnaphthalene Solution in Hexane, 100ug/mL, Q2813819, 2-Methylnaphthalene 1000 microg/mL in Dichloromethane, Z104476894

Application

2-Methylnaphthalene is commonly employed as an intermediate in the synthesis of vitamin K analogs and other pharmaceuticals. It serves as a key precursor in the production of dyes, surfactants, and specialty chemicals. Additionally, this compound is used in research for studying polycyclic aromatic hydrocarbon (PAH) reactivity and as a model substrate in catalytic hydrogenation studies.

Safety and Hazards

GHS Hazard Statements

• H302: Harmful if swallowed [Warning Acute toxicity, oral]
• H315: Causes skin irritation [Warning Skin corrosion/irritation]
• H319: Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H335: May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
• H401: Toxic to aquatic life [Hazardous to the aquatic environment, acute hazard]
• H411: Toxic to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]

Precautionary Statements

• P261, P264, P264+P265, P270, P271, P273, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P319, P321, P330, P332+P317, P337+P317, P362+P364, P391, P403+P233, P405, and P501

Hazard Classes and Categories

• Acute toxicity – Category 4
• Serious eye damage/eye irritation – Category 2
• Specific target organ toxicity – Single exposure – Category 3
• Specific target organ toxicity – Repeated exposure – Category 2
• Hazardous to the aquatic environment – Category 2
• Hazardous to the aquatic environment – Category 2

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.