Benzoic acid,3-(acetylamino)-5-(acetylmethylamino)-2,4,6-triiodo- cas no:1949-45-7

NameBenzoic acid,3-(acetylamino)-5-(acetylmethylamino)-2,4,6-triiodo-
CAS1949-45-7
SynonymsBenzoicacid, 3-acetamido-2,4,6-triiodo-5-(N-methylacetamido)- (7CI,8CI);3,5-Diacetamido-N-methyl-2,4,6-triiodobenzoic acid; Metrizoate; Metrizoic acid
EINECS(EC#)217-761-1
Molecular FormulaC12H11 I3 N2 O4
Molecular Weight627.95

refractive index1.77

Safety

Poison by intracerebral route. Mildly toxic by ingestion. When heated to decomposition it emits toxic fumes of I⁻ and NO_x.
Safety Information of Metrizoic acid (CAS NO.1949-45-7):
Risk Statements: 36/37/38 
36:  Irritating to the eyes 
37:  Irritating to the respiratory system 
38:  Irritating to the skin  
Safety Statements: 26-36/37/39
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36:  Wear suitable protective clothing  
37:  Wear suitable gloves 
39:  Wear eye/face protection

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
mouse	LD50	intracrebral	234mg/kg (234mg/kg)		Drugs in Japan Vol. 6, Pg. 843, 1982.
mouse	LD50	intravenous	10gm/kg (10000mg/kg)		Farmaco, Edizione Scientifica. Vol. 17, Pg. 340, 1962.
mouse	LD50	oral	> 46800ug/kg (46.8mg/kg)		Drugs in Japan Vol. 6, Pg. 843, 1982.
mouse	LD50	subcutaneous	36gm/kg (36000mg/kg)		Drugs in Japan Vol. 6, Pg. 843, 1982.
rat	LD50	intravenous	14300mg/kg (14300mg/kg)		Drugs in Japan Vol. 6, Pg. 843, 1982.
rat	LD50	oral	38100mg/kg (38100mg/kg)		Drugs in Japan Vol. 6, Pg. 843, 1982.
rat	LD50	subcutaneous	29600mg/kg (29600mg/kg)		Drugs in Japan Vol. 6, Pg. 843, 1982.