1,4-dibromo-2,3-butanedione cas no:6305-43-7

Name1,4-dibromo-2,3-butanedione
CAS6305-43-7
Synonyms1,4-Dibromo-2,3-butanedione, (1,4-Dibromodiacetyl); alpha,alpha-Dibromobiacetyl~1,4-Dibromodiacetyl
EINECS(EC#)228-615-1
Molecular FormulaC4H4Br2O2
Molecular Weight243.88

refractive index1.539

Hazardclass8

Hazard Xi
Risk R23/24/25;R34
Safety

Poison by intravenous and intraperitoneal routes. When heated to decomposition it emits toxic fumes of Br⁻. See also BROMIDES.Safety information of 2,2'-Dibromobiacetyl (CAS NO.6305-43-7):
Hazard Codes  Xi
Risk Statements  36/37/38
 R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements  26-36/37/39-27 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S27:Take off immediately all contaminated clothing. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.
RIDADR  1759
RTECS  EK2850000
HazardClass  8
PackingGroup  III

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
dog	LD50	intravenous	21mg/kg (21mg/kg)	LUNGS, THORAX, OR RESPIRATION: ACUTE PULMONARY EDEMA LIVER: "HEPATITIS (HEPATOCELLULAR NECROSIS), DIFFUSE"	Journal of the National Cancer Institute. Vol. 31, Pg. 297, 1963.
mouse	LD50	intraperitoneal	9400ug/kg (9.4mg/kg)	LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES GASTROINTESTINAL: OTHER CHANGES	Journal of the National Cancer Institute. Vol. 31, Pg. 297, 1963.
mouse	LD50	intravenous	10mg/kg (10mg/kg)		U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. Vol. NX#00598,