AMMONIA anhydrous

UN Number: 1005 - CAS Number: 7664-41-7

Also known as: AMMONIAC anhydre, Ammonia Gas, Ammonia Anhydrous, Ammoniac
Information on chemical

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List

Description

UN number 1005
CAS number 7664-41-7
Formula NH3

Physical chemical data

Physical State (20°C) Gas
Physical State (25°C) Gas
Density (kg/m3)
0.75 [Kg/m³] at a temperature of 20°C
681.8 [Kg/m³] at a temperature of -33.33°C
Kinematic viscosity (cSt)
0.255 [cSt] at a temperature of -33.5°C
Molar mass (g/mol) 17.03
Density of gas (kg/m3) 0.75
Solubility (g/L)
531000 [g/L] at a temperature of 20°C and salinity of 0‰
440000 [g/L] at a temperature of 28°C and salinity of 0‰
Boiling Point (°C) -33.2
Melting Point (°C) -78
Critical molar volume (m³/mol) 6.98e-05
Critical temperature (°C) 405.56
Critical pressure (Pa) 1135700
Vapour Pressure (Pa)
861050 [Pa] at a temperature of 20°C
1013250 [Pa] at a temperature of 25°C
Ignition Temperature (°C) 630
Flash Point (Pensky-Martens closed cup) (°C) 132
Lower explosivity limit (LEL) (volume %) 16
Upper explosivity limit (UEL) (volume %) 25
Vapor enthalpy (J/Kg)
1228334 [J/Kg] at a temperature of -33.33°C
Combus enthalpy (J/Kg) 22476660
Henry's constant (mol/(m³·Pa)) 1.63

Behaviour at sea

Log kow 0.23
Log koc 1.155
Biodegradation in estuary environment (Half-life) (days) Not hydrolysable

Additional data

Colour colourless
Odour ammonia odour
MARPOL pollution category
Category Description
Other Substances Substances which have been evaluated and found to fall outside Category X, Y or Z because they are considered to present no harm to marine resources, human health, amenities or other legitimate uses of the sea when discharged into the sea from tank cleaning of deballasting operations. The discharge of bilge or ballast water or other residues or mixtures containing these substances are not subject to any requirements of MARPOL Annex II.
Standard behavior classification GD

Transportation data

Transport mode Gas,Packaged
Ship type 2G,2PG
State liq.compr.gas
Temperature (°C) ambient
Pressure (Pa) under pressure
Family name ammonia
IMO class 2(2.3)

Reactivity data

Water No
Acid(s) Yes
Base(s) Yes
Metal(s) and alloys No
Static electricity Yes
Oxidizing agents Yes
Reducing agents No
Combustibles No
Organic substance Yes

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)) 3 - Moderately toxic
Chronic aquatic toxicity (B2) (NOEC (mg/l)) 2 - Moderate
Acute mammalian toxicity by swallowing (C1) (LD50 (mg/kg)) 1 - Slight
Acute mammalian toxicity by skin penetration (C2) (LD50 (mg/kg)) 2 - Moderate
Acute mammalian toxicity by inhalation (C3) (LC50 (mg/l)) 3 - Moderately high
Skin irritation/corrosivity (D1) 1 - Mildly irritating
Eye irritation/corrosivity (D2) 3 - Severely irritating, with irreversible corneal injury
Interference with coastal amenities (E2) DE - Dissolver/Evaporator
Effects on wildlife and bottom habitats (E3) 3 - Is highly acutely toxic; and/or is severely irritant or corrosive to skin or eyes; and/or is carcinogenic, mutagenic or reprotoxic; and/or is a floater or persistent floater with associated health effects

Human toxicity threshold

Compressed Gas Corrosive Environmental Hazard Toxic
IDHL 500
Hazard statements
Physical
H221 Flammable gas.
H280 Contains gas under pressure, may explode if heated.
Health
H314 Causes severe skin burns and eye damage.
H331 Toxic if inhaled.
Environmental
H410 Very toxic to aquatic life with long lasting effects.
Precautionary statements
Prevention
P210 Keep away from heat/sparks/open flames/hot surfaces. No smoking.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
Response
P303 + P361 + P353 IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.
P304 + P340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P305 + P351 + P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P377 Leaking gas fire: Do not extinguish, unless leak can be stopped safely.
Storage
P403 + P233 Store in a well-ventilated place. Keep container tightly closed.
TLV-TWA 25
ERPG-1 (ppm) 25
ERPG-2 (ppm) 150
ERPG-3 (ppm) 750
10 min 30 min 60 min 4 hrs 8 hrs
AEGL-1 (ppm) 30 30 30 30 30
AEGL-2 (ppm) 220 220 160 110 110
AEGL-3 (ppm) 2700 1600 1100 550 390

Ecotoxicity

Lowest median lethal concentration (LC50) on algae (mg/l) 17
Lowest median lethal concentration (LC50) on crustacean (mg/l) 0.13
Lowest median lethal concentration (LC50) on fishes (mg/l) 0.5
Highest no observed effect concentration (NOEC) on crustacean (mg/l) 0.79
Assessment factor (AF)
20 on the Short term
Predicted No Effect Concentration (PNEC) (µg/l)
1 [µg/l] on the Short term
Incident reports

Incident reports

Year Vessel Location Cargo type
1976 René 16 Port of Landskrona, Sweden Bulk
1977 Storage Tank Massie Creek, USA Bulk
Emergency Response Guidebook

Emergency Response Guidebook

Guide number: 125

See the guide or download the emergency response guidebook

At sea emergency guide

At sea emergency guide

Emergency schedule: 2-08

LIQUEFIED GASES, NON-FLAMMABLE; TOXIC AND/OR CORROSIVE AND/OR OXIDIZING AGENT.

Emergency procedures

Action

Turn ship off-wind.

Spillage on deck

Stop leak if practicable. Let spilt liquid evaporate, but keep clear.

Spillage under deck

Provide adequate ventilation. Stop leak if practicable. Let spilt liquid evaporate, but keep clear.

Fire on deck

Keep adjacent receptacles cool with copious quantities of water. Remove undamaged cooled receptacles to a safe place.

Fire under deck

Batten down; use ship's fixed fire-fighting installation. Otherwise adopt action as for "On deck".

Special equipment to be carried

Protective clothing (gloves, boots, coveralls, headgear).
Self-contained breathing apparatus.
Spray nozzles.

Remarks by UN no.

• AMMONIA, ANHYDROUS (UN No. 1005)
Wash spillages of solutions overboard with copious quantities of water.

• CHLORINE (UN No. 1017)
Avoid contact with oil and all combustible materials so as to prevent spontaneous combustion or explosion.

• FERTILIZER AMMONIATING SOLUTION (UN No. 1043), with free ammonia.
Wash spillages of solutions overboard with copious quantities of water.

• DINITROGEN TETROXIDE, LIQUEFIED (UN No 1067)
• NITROUS OXIDE, COMPRESSED (UN No. 1070)
• NITRIC OXIDE AND DINITROGEN TETROXIDE MIXTURE (UN No. 1975)
Avoid contact with oil and all combustible materials so as to prevent spontaneous combustion or explosion.

• AMMONIA SOLUTION (UN No. 2073), with more than 35% but not more than 50%
ammonia.
Wash spillages of solutions overboard with copious quantities of water.

• NITROGEN TRIOXIDE (UN No. 2421)
• CHLORINE PENTAFLUORIDE (UN No. 2548)
• BROMINE CHLORIDE (UN No. 2901)
• PERCHLORYL FLUORIDE (UN No. 3083)
• LIQUEFIED GAS, OXIDIZING, N.O.S. (UN No. 3157)
Avoid contact with oil and all combustible materials so as to prevent spontaneous combustion or explosion.

• AMMONIA SOLUTION (UN No. 3318) with more than 50% ammonia.
Wash spillages of solutions overboard with copious quantities of water.

Decision trees

Decision trees

No decision trees available

No additional data

last modified 2020-12-14T09:02:04+00:00