2-Chlorobutadiene
[CAS# 126-99-8]

Identification

• Classification: Analytical chemistry >> Standard >> Agricultural and environmental standards
• Name: 2-Chlorobutadiene
• Synonyms: Chloroprene; NSC 18589; beta-Chloroprene
• Molecular Formula: C₄H₅Cl
• Molecular Weight: 88.54
• CAS Registry Number: 126-99-8
• EC Number: 204-818-0

Properties

• Solubility: Very slightly soluble (0.84 g/L) (25 ºC), Calc.^*
• Density: 1.0382 g/cm³ (20 ºC)^**
• Melting point: 134-135 ºC (ethanol )^***
• Boiling point: 92 ºC (10 Torr)^**
• Refractive index: 1.4850 (589.3 nm 20 ºC)^**
• Flash point: -8.8±14.1 ºC, Calc.^*

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

^** Petrov, A. A.; Nauchnye Doklady Vysshei Shkoly, Khimiya i Khimicheskaya Tekhnologiya 1958, (No. 3), P530-2.

^*** Middleton, W. J.; Journal of the American Chemical Society 1958, V80, P2783-8.

Safety Data

• Hazard Symbols: GHS02;GHS08;GHS07 Danger
• Hazard Statements: H225-H350-H332-H302-H335-H373-H315-H319

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Specific target organ toxicity - repeated exposure	STOT RE	2	H373
Flammable liquids	Flam. Liq.	2	H225
Acute toxicity	Acute Tox.	4	H332
Skin irritation	Skin Irrit.	2	H315
Carcinogenicity	Carc.	1B	H350
Eye irritation	Eye Irrit.	2	H319
Specific target organ toxicity - single exposure	STOT SE	3	H335
Acute toxicity	Acute Tox.	3	H301
Chronic hazardous to the aquatic environment	Aquatic Chronic	2	H411
Acute toxicity	Acute Tox.	4	H302
Chronic hazardous to the aquatic environment	Aquatic Chronic	3	H412