2-ETHYLHEXANOIC ACID

CAS Number: 149-57-5

Also known as: ACIDE 2-ETHYLHEXANOIQUE, BUTYLETHYLACETIC ACID, 2-Ethylcaproic Acid, 2-Ethyl-Hexanoic Acid, Ethylhexoic Acid, Ethylhexanoic Acid, 2-Ethylhexanoic Acid, Acide 2-EthylhexanoÏQue
Information on chemical

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List

Description

CAS number 149-57-5
Formula C8H16O2

Physical chemical data

Physical State (20°C) Liquid
Physical State (25°C) Liquid
Density (kg/m3)
908 [Kg/m³] at a temperature of 20°C
903.1 [Kg/m³] at a temperature of 25°C
917.3 [Kg/m³] at a temperature of 5°C
914.2 [Kg/m³] at a temperature of 10°C
906.1 [Kg/m³] at a temperature of 20°C
Kinematic viscosity (cSt)
8.64 [cSt] at a temperature of 20°C
17.911 [cSt] at a temperature of 5°C
14.034 [cSt] at a temperature of 10°C
9.2815 [cSt] at a temperature of 20°C
Molar mass (g/mol) 144.21
Density of gas (kg/m3) 6.45
Solubility (g/L)
2000 [g/L] at a temperature of 20°C and salinity of 0‰
1400 [g/L] at a temperature of 25°C and salinity of 0‰
1640 [g/L] at a temperature of 20°C and salinity of 0‰
1680 [g/L] at a temperature of 20°C and salinity of 5‰
960 [g/L] at a temperature of 20°C and salinity of 30‰
Boiling Point (°C) 227
Melting Point (°C) -83
Critical molar volume (m³/mol) 0.000528
Critical temperature (°C) 674
Critical pressure (Pa) 2780000
Surface tension (mN/m)
28.42 [mN/m] at a temperature of 6.9°C
27.62 [mN/m] at a temperature of 11.2°C
26.86 [mN/m] at a temperature of 19.5°C
Ignition Temperature (°C) 440
Flash Point (°C) 118
Flash Point (Pensky-Martens closed cup) (°C) 114
Flash Point (Cleveland open cup) (°C) 118
Lower explosivity limit (LEL) (volume %) 1.4
Upper explosivity limit (UEL) (volume %) 8.64
Vapor enthalpy (J/Kg)
524563 [J/Kg] at a temperature of 25°C
Henry's constant (mol/(m³·Pa)) 0.28

Behaviour at sea

Log kow 2.64
Log koc 1.43
Aqueous photolysis (Half-life) Not photolysable
Biodegradation in estuary environment (Half-life) (days) Not hydrolysable
Bioconcentration factor (BCF) 3

Additional data

Colour colourless
Odour mild
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.
Standard behavior classification FD

Transportation data

State liquid
Temperature (°C) ambient
Family name organic acids

Reactivity data

Water No
Acid(s) Yes
Base(s) Yes
Metal(s) and alloys Yes
Oxidizing agents Yes
Organic substance Yes

GESAMP Hazard profile

Bioaccumulation in logPow (A1A) 2 - ≥2 and <3
Bioaccumulation (A1) 2 - Low potential to bioaccumulate
Biodegradation (A2) R - Readily biodegradable
Acute aquatic toxicity (B1) (LC/EC/IC50 (mg/l)) 2 - Slightly 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)) 2 - Moderate
Skin irritation/corrosivity (D1) 2 - Irritating
Eye irritation/corrosivity (D2) 2 - Irritating
Interference with coastal amenities (E2) FD - Floater/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

Health Hazard
Hazard statements
Health
H361 Suspected of damaging fertility or the unborn child.
TEEL-1 (mg/m3) 15
TEEL-2 (mg/m3) 125
TEEL-3 (mg/m3) 500

Ecotoxicity

Lowest median lethal concentration (LC50) on fishes (mg/l) 70
Highest no observed effect concentration (NOEC) on algae (mg/l) 0.45
Highest no observed effect concentration (NOEC) on crustacean (mg/l) 18
Assessment factor (AF)
500 on the Short term
Predicted No Effect Concentration (PNEC) (µg/l)
36 [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

No decision trees available

No additional data

last modified 2020-12-11T09:57:23+00:00