1-Methylnaphthalene
[CAS# 90-12-0]

Identification

• Classification: Organic raw materials >> Hydrocarbon compounds and their derivatives >> Aromatic hydrocarbon
• Name: 1-Methylnaphthalene
• Synonyms: alpha-Methylnaphthalene
• Molecular Formula: C₁₁H₁₀
• Molecular Weight: 142.20
• CAS Registry Number: 90-12-0
• EC Number: 201-966-8
• FEMA: 3193

Properties

• Density: 1.025
• Melting point: -22 ºC
• Boiling point: 240-243 ºC
• Refractive index: 1.613-1.616
• Flash point: 82 ºC
• Water solubility: 0.026 g/L (25 ºC)

Safety Data

• Hazard Symbols: Xn;N
• Risk Codes: R22;R51/53
• Safety Description: S61

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Acute toxicity	Acute Tox.	4	H302
Aspiration hazard	Asp. Tox.	1	H304
Chronic hazardous to the aquatic environment	Aquatic Chronic	2	H411
Eye irritation	Eye Irrit.	2	H319
Specific target organ toxicity - single exposure	STOT SE	3	H335
Skin irritation	Skin Irrit.	2	H315
Respiratory sensitization	Resp. Sens.	1	H334
Specific target organ toxicity - single exposure	STOT SE	3	H336
Acute hazardous to the aquatic environment	Aquatic Acute	2	H401
Flammable liquids	Flam. Liq.	4	H227

• Transport Information: UN 3082