Product Name

  • Name

    Metrizoic acid

  • EINECS 217-761-1
  • CAS No. 1949-45-7
  • Density 2.483g/cm3
  • Solubility
  • Melting Point 281-282°
  • Formula C12H11 I3 N2 O4
  • Boiling Point 678.8°Cat760mmHg
  • Molecular Weight 627.944
  • Flash Point 364.3°C
  • Transport Information
  • Appearance
  • Safety Poison by intracerebral route. Mildly toxic by ingestion. When heated to decomposition it emits toxic fumes of I− and NOx.
  • Risk Codes 36/37/38
  • Molecular Structure Molecular Structure of 1949-45-7 (Metrizoic acid)
  • Hazard Symbols
  • Synonyms Benzoicacid, 3-acetamido-2,4,6-triiodo-5-(N-methylacetamido)- (7CI,8CI);3,5-Diacetamido-N-methyl-2,4,6-triiodobenzoic acid; Metrizoate; Metrizoic acid
  • PSA 86.71000
  • LogP 3.21270

METRIZOIC ACID Chemical Properties

Product Name: Metrizoic acid (CAS NO.1949-45-7)


Molecular Formula: C12H11I3N2O4
Molecular Weight: 627.94g/mol
Mol File: 1949-45-7.mol
Einecs: 217-761-1
Boiling point: 678.8 °C at 760 mmHg
Flash Point: 364.3 °C
Density: 2.483 g/cm3
Surface Tension: 76 dyne/cm
Enthalpy of Vaporization: 104.65 kJ/mol
Vapour Pressure: 2.35E-19 mmHg at 25°C
XLogP3-AA: 1.9
H-Bond Donor: 2
H-Bond Acceptor: 4

METRIZOIC ACID Toxicity Data With Reference

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.

METRIZOIC ACID Safety Profile

Poison by intracerebral route. Mildly toxic by ingestion. When heated to decomposition it emits toxic fumes of I− and NOx.
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

METRIZOIC ACID Specification

 Metrizoic acid ,its CAS NO. is 1949-45-7,the synonyms is 3-Acetamido-5-(n-methylacetamido)-2,4,6-triiodobenzoic acid;metrizoic acid ; 3-(Acetylamino)-5-(acetylmethylamino)-2,4,6-triiodo-benzoicaci ; 3-Acetamido-2,4,6-triiodo-5-(n-methylacetamido)-benzoicaci;metrizoate ; 3-Acetamido-2,4,6-triiodo-5-n-methylacetamidobenzoic acid ; 3-(Acetylamino)-5-[acetyl methyl-amino)2,4,6-triiodobenzoic acid ; Metrizoic .

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