4-Methyl-1,3-pentadiene
[CAS# 926-56-7]

Identification

• Name: 4-Methyl-1,3-pentadiene
• Synonyms: 1,1-Dimethyl-1,3-butadiene; 1,1-Dimethylbutadiene; 2-Methyl-2,4-pentadiene
• Molecular Formula: C₆H₁₀
• Molecular Weight: 82.14
• CAS Registry Number: 926-56-7 (54363-49-4)
• EC Number: 213-137-8

Properties

• Solubility: Very slightly soluble (0.14 g/L) (25 ºC), Calc.^*
• Density: 0.7215 g/cm³ (20 ºC)^**
• Boiling point: 200-221 ºC (12 Torr)^***
• Refractive index: 1.46975 (20 ºC)^****
• Flash point: -18.6±13.0 ºC, Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2017 ACD/Labs)

^** Farberov, M. I.; Zhurnal Obshchei Khimii 1957, V27, P3001-5.

^*** Takagi, Seisi; Yakugaku Zasshi 1938, V58, P797-803.

^**** Van Keersbilck, N.; Bulletin des Societes Chimiques Belges 1929, V38, P205-11.

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Flammable liquids	Flam. Liq.	2	H225
Aspiration hazard	Asp. Tox.	1	H304
Specific target organ toxicity - single exposure	STOT SE	3	H335
Skin irritation	Skin Irrit.	2	H315
Eye irritation	Eye Irrit.	2	H319
Eye irritation	Eye Irrit.	2A	H319
Skin sensitization	Skin Sens.	1	H317
Chronic hazardous to the aquatic environment	Aquatic Chronic	2	H411