4-tert-Butyltoluene
[CAS# 98-51-1]

Identification

• Classification: Pharmaceutical intermediate >> Heterocyclic compound intermediate >> Pyrimidine compound >> Fluoropyrimidine
• Name: 4-tert-Butyltoluene
• Synonyms: 1-Methyl-4-tert-butylbenzene; p-Methyl-tert-butylbenzene; p-tert-Butyl toluene; TBT
• Molecular Formula: C₁₁H₁₆
• Molecular Weight: 148.25
• CAS Registry Number: 98-51-1
• EC Number: 202-675-9

Properties

• Density: 0.8612
• Melting point: -54 ºC
• Boiling point: 189-192 ºC
• Refractive index: 1.491-1.493
• Flash point: 54 ºC
• Water solubility: 0.06 g/100 mL (20 ºC)

Safety Data

• Hazard Symbols: T
• Risk Codes: R10;R22;R23;R36/37/38
• Safety Description: S16;S26;S28A;S36/37/39;S45

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Acute toxicity	Acute Tox.	4	H302
Eye irritation	Eye Irrit.	2	H319
Flammable liquids	Flam. Liq.	3	H226
Acute toxicity	Acute Tox.	2	H330
Chronic hazardous to the aquatic environment	Aquatic Chronic	2	H411
Skin irritation	Skin Irrit.	2	H315
Specific target organ toxicity - single exposure	STOT SE	3	H335
Specific target organ toxicity - single exposure	STOT SE	1	H370
Reproductive toxicity	Repr.	2	H361
Acute toxicity	Acute Tox.	4	H312
Acute toxicity	Acute Tox.	4	H332
Acute hazardous to the aquatic environment	Aquatic Acute	2	H401
Eye irritation	Eye Irrit.	2A	H319
Reproductive toxicity	Repr.	1B	H360
Specific target organ toxicity - single exposure	STOT SE	3	H336

• Transport Information: UN 2667;UN 1992