Melting point :64 °C
Boiling point :122-142 °C(lit.)
Density :0.92 g/mL at 25 °C
refractive index :n20/D 1.521
Flash point :>230 °F
storage temp. :2-8°C
form :slab/chunk
biological source :rabbit
λmax :310-480 nm
Cosmetics Ingredients Functions :VISCOSITY CONTROLLING
InChI :InChI=1S/C5H8/c1-4-5(2)3/h4H,1-2H2,3H3
InChIKey :RRHGJUQNOFWUDK-UHFFFAOYSA-N
SMILES :C(=C)(C)C=C
CAS DataBase Reference :9003-31-0
EPA Substance Registry System :1,3-Butadiene, 2-methyl-, homopolymer (9003-31-0)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H226 Flammable liquid and vapour Flammable liquids Category 3 Warning H304 May be fatal if swallowed and enters airways Aspiration hazard Category 1 Danger H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning H412 Harmful to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 3 P273, P501
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P331 Do NOT induce vomiting.