UREA ammonium phosphate solution

CAS Number: 57-13-6

Also known as: Amide Of Carbonic Acid, Carbamide, Carbamimidic Acid, Carbonyl Diamide, Carbonyldiamide, Carbonyldiamine, Isourea, Urea, Uree
Information on chemical

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List


CAS number 57-13-6
Formula CH4N2O

Physical chemical data

Physical State (25°C) Solid
Kinematic viscosity (cSt)
1.49 [cSt] at a temperature of 20°C
Molar mass (g/mol) 60.06
Solubility (g/L)
1080000 [g/L] at a temperature of 20°C and salinity of 0‰
1230000 [g/L] at a temperature of 25°C and salinity of 0‰
Melting Point (°C) 132.7
Combus enthalpy (J/Kg) 9050000
Combustion efficiency (%) 95
Mass flow rate of the combustion surface (Kg/(m²·s)) 0.01
Rad fraction (%) 22
Henry's constant (mol/(m³·Pa)) 0

Behaviour at sea

Log kow 0
Log koc 0.9
Aqueous photolysis (Half-life) Not photolysable
Biodegradation in estuary environment (Half-life) (days) Not hydrolysable
Biodegradation in marine environment (Half-life) (days) 50
Bioconcentration factor (BCF) 1.1

Additional data

MARPOL pollution category
Category Description
Z Noxious Liquid Substances which, if discharged into the sea from tank cleaning or deballasting operations, are deemed to present a minor hazard to either marine resources or human health and therefore justify less stringent restrictions on the quality and quantity of the discharge into the marine environment.

Transportation data

Reactivity data

Abilities Miscible in water.
Notable risks Reacts with some compounds.

GESAMP Hazard profile

Bioaccumulation in logPow (A1A) 0 - e <1, or > ca.7, or Mol. Wt. > 1000
Bioaccumulation in BCF (A1B) 0 - No measurable BCF
Bioaccumulation (A1) 0 - No potential to bioaccumulate
Biodegradation (A2) R - Readily biodegradable
Acute aquatic toxicity (B1) (LC/EC/IC50 (mg/l)) 1 - Practically non-toxic
Acute mammalian toxicity by swallowing (C1) (LD50 (mg/kg)) 0 - Negligible
Acute mammalian toxicity by skin penetration (C2) (LD50 (mg/kg)) 0 - Negligible
Acute mammalian toxicity by inhalation (C3) (LC50 (mg/l)) 1 - Slight
Skin irritation/corrosivity (D1) 1 - Mildly irritating
Eye irritation/corrosivity (D2) 1 - Mildly irritating
Interference with coastal amenities (E2) D - Dissolver
Effects on wildlife and bottom habitats (E3) 1 - Is a floater; and/or is slightly acutely toxic; and/or is mildly irritant to skin and/or eyes

Human toxicity threshold


Lowest median lethal concentration (LC50) on crustacean (mg/l) 3910
Lowest median lethal concentration (LC50) on fishes (mg/l) 67
Highest no observed effect concentration (NOEC) on algae (mg/l) 1050
Assessment factor (AF)
47 on the Short term
Predicted No Effect Concentration (PNEC) (µg/l)
1000 [µg/l] on the Short term
Incident reports

Incident reports

No incident reports available

Emergency Response Guidebook

Emergency Response Guidebook

No guides available

At sea emergency guide

At sea emergency guide

No guides available

Decision trees

Decision trees

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No additional data

last modified 2020-12-11T09:57:22+00:00

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