ETHANOLAMINE pure or solutions

UN Number: 2491 - CAS Number: 141-43-5

Also known as: 2-AMINOETHANOL, beta-AMINO ETHYL ALCOHOL, COLAMINE, 2-Aminoethol, β-Aminoethyl Alcohol, Ethyloamine, β-Hydroxyethylamine, Monoethanolamine, Mea, Ethanolamine, Beta-Aminoethyl Alcohol, Beta-Hydroxyethylamine
Information on chemical

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List


UN number 2491
CAS number 141-43-5
Formula C2H7NO

Physical chemical data

Physical State (20°C) Liquid
Physical State (25°C) Liquid
Density (kg/m3)
1016 [Kg/m³] at a temperature of 20°C
Kinematic viscosity (cSt)
18.61 [cSt] at a temperature of 25°C
Molar mass (g/mol) 61.08
Density of gas (kg/m3) 2.709
Solubility (g/L)
100000 [g/L] at a temperature of 20°C and salinity of 0‰
100000 [g/L] at a temperature of 25°C and salinity of 0‰
Boiling Point (°C) 170
Melting Point (°C) 10
Critical temperature (°C) 671
Critical pressure (Pa) 8000000
Surface tension (mN/m)
48.32 [mN/m] at a temperature of 25°C
Vapour Pressure (Pa)
64 [Pa] at a temperature of 20°C
Ignition Temperature (°C) 410
Flash Point (°C) 85
Flash Point (Pensky-Martens closed cup) (°C) 86
Lower explosivity limit (LEL) (volume %) 5.5
Upper explosivity limit (UEL) (volume %) 17
Vapor enthalpy (J/Kg)
815775 [J/Kg] at a temperature of 171°C
Combus enthalpy (J/Kg) 24900000
Specific heat capacity (J/(Kg·K)) 3201
Henry's constant (mol/(m³·Pa)) 0.003

Behaviour at sea

Log kow -1.31
Log koc 0.07
Aqueous photolysis (Half-life) Not photolysable
Biodegradation in estuary environment (Half-life) (days) Not hydrolysable
Bioconcentration factor (BCF) 3.2

Additional data

Colour colourless
Odour weak ammonia odour
MARPOL pollution category
Category Description
Y Noxious Liquid Substances which, if discharged into the sea from tank cleaning or deballasting operations, are deemed to present a hazard to either marine resources or human health or cause harm to amenities or other legitimate uses of the sea and therefore justify a limitation on the quality and quantity of the discharge into the marine environment.

Transportation data

Package group III
State liquid
Temperature (°C) ambient
Pressure (Pa) ambient
Family name alkanolamines

Reactivity data

Water No
Abilities Miscible in water.
Acid(s) Yes
Base(s) No
Metal(s) and alloys No
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 (A1) 0 - No potential to bioaccumulate
Biodegradation (A2) R - Readily biodegradable
Acute aquatic toxicity (B1) (LC/EC/IC50 (mg/l)) 2 - Slightly toxic
Chronic aquatic toxicity (B2) (NOEC (mg/l)) 0 - Negligible
Acute mammalian toxicity by swallowing (C1) (LD50 (mg/kg)) 1 - Slight
Acute mammalian toxicity by skin penetration (C2) (LD50 (mg/kg)) 1 - Slight
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) D - Dissolver
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

Corrosive Harmful
IDHL 1000
Hazard statements
H302 Harmful if swallowed.
H312 Harmful in contact with skin.
H314 Causes severe skin burns and eye damage.
H332 Harmful if inhaled.
H335 May cause respiratory irritation.
H412 Harmful to aquatic life with long lasting effects.
Precautionary statements
P273 Avoid release to the environment.
P501 Dispose of contents/container to ...
TEEL-1 (mg/m3) 6 ppm
TEEL-2 (mg/m3) 30 ppm
TEEL-3 (mg/m3) 30 ppm


Lowest median lethal concentration (LC50) on crustacean (mg/l) 140
Lowest median lethal concentration (LC50) on fishes (mg/l) 150
Highest no observed effect concentration (NOEC) on algae (mg/l) 1
Highest no observed effect concentration (NOEC) on crustacean (mg/l) 0.85
Highest no observed effect concentration (NOEC) on fishes (mg/l) 1.24
Assessment factor (AF)
100 on the Short term
Predicted No Effect Concentration (PNEC) (µg/l)
9 [µg/l] on the Short term
Incident reports

Incident reports

No incident reports available

Emergency Response Guidebook

Emergency Response Guidebook

Guide number: 153

See the guide or download the emergency response guidebook

At sea emergency guide

At sea emergency guide

Emergency schedule: 8-05


Emergency procedures

Spillage on deck

Wash overboard with copious quantities of water.

Spillage under deck

Collect spillage, where practicable, using absorbent material for liquids, for safe disposal.

Fire on deck

Use water spray.

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.

• FORMIC ACID (UN No. 1779)
Turn ship off-wind.

Decision trees

Decision trees

No decision trees available

No additional data

last modified 2020-12-14T09:02:43+00:00