Isobutene trimer
[CAS# 7756-94-7]

Identification

• Name: Isobutene trimer
• Synonyms: Isobutylene trimer; NAS 3; Triisobutylene
• Molecular Formula: (C₄H₈)₃
• Molecular Weight: 168.32
• CAS Registry Number: 7756-94-7
• EC Number: 500-001-0

Properties

• Density: 0.7668 g/cm³ (20 °C)^*
• Melting point: 141 °C^**
• Refractive index: 1.4350 (589.3 nm 20 °C)^*

^* Meshcheryakov, A. P.

^** Elliott, John Scotchford

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Flammable liquids	Flam. Liq.	3	H226
Chronic hazardous to the aquatic environment	Aquatic Chronic	4	H413
Aspiration hazard	Asp. Tox.	1	H304
Skin irritation	Skin Irrit.	2	H315