CAS Number: 25265-77-4

Also known as: Texanol, 2,2,4-Trimethyl-1,3-Pentanediol Monoisobutyrate, Propanoic Acid, 2-Methyl-, 3-Hydroxy-2,2,4-Trimethylpentyl Ester, Propanoic Acid, 2-Methyl-, Monoester With 2,2,4-Trimethyl-1,3-Pentanediol, 2,2,4-Trimethyl-1,3-Pentanediol-1-Isobutyrate
Information on chemical

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List


CAS number 25265-77-4
Formula C12H24O3

Physical chemical data

Physical State (25°C) Liquid
Density (kg/m3)
957.7 [Kg/m³] at a temperature of 5°C
954.2 [Kg/m³] at a temperature of 10°C
947.7 [Kg/m³] at a temperature of 20°C
Kinematic viscosity (cSt)
45.625 [cSt] at a temperature of 5°C
34.972 [cSt] at a temperature of 10°C
19.996 [cSt] at a temperature of 20°C
Molar mass (g/mol) 216.32
Solubility (g/L)
858 [g/L] at a temperature of 25°C and salinity of 0‰
970 [g/L] at a temperature of 20°C and salinity of 0‰
870 [g/L] at a temperature of 20°C and salinity of 5‰
660 [g/L] at a temperature of 20°C and salinity of 30‰
Boiling Point (°C) 244
Melting Point (°C) -50
Surface tension (mN/m)
28.6 [mN/m] at a temperature of 22°C
29.46 [mN/m] at a temperature of 6.2°C
28.73 [mN/m] at a temperature of 12.4°C
28.12 [mN/m] at a temperature of 19.5°C
Flash Point (Pensky-Martens closed cup) (°C) 122
Flash Point (Cleveland open cup) (°C) 120
Henry's constant (mol/(m³·Pa)) 0.01

Behaviour at sea

Log kow 3.47
Log koc 1.47
Biodegradation in estuary environment (Half-life) (days) 16.5

Additional data

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

Reactivity data

GESAMP Hazard profile

Bioaccumulation in logPow (A1A) 3 - ≥3 and <4
Bioaccumulation (A1) 3 - Moderate potential to bioaccumulate
Biodegradation (A2) NR - Not readily biodegradable
Acute aquatic toxicity (B1) (LC/EC/IC50 (mg/l)) 3 - Moderately toxic
Chronic aquatic toxicity (B2) (NOEC (mg/l)) 0 - Negligible
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)) 0 - Negligible
Skin irritation/corrosivity (D1) 2 - Irritating
Eye irritation/corrosivity (D2) 2 - Irritating
Interference with coastal amenities (E2) FE - Floater/Evaporator
Effects on wildlife and bottom habitats (E3) 2 - Is a persistent floater; and/or is moderately acutely toxic; and/or is irritating to skin and/or eyes; and/or has long-term health effects other than carcinogenicity, mutagenicity or reprotoxicity; and/or is highly flammable; and/or is flammable and is a floater with evaporative properties

Human toxicity threshold


Lowest median lethal concentration (LC50) on algae (mg/l) 18.4
Lowest median lethal concentration (LC50) on crustacean (mg/l) > 95
Lowest median lethal concentration (LC50) on fishes (mg/l) 30
Highest no observed effect concentration (NOEC) on algae (mg/l) 3.28
Assessment factor (AF)
10000 on the Short term
Predicted No Effect Concentration (PNEC) (µg/l)
2 [µg/l] on the Short term
Incident reports

Incident reports

No incident reports available

Emergency Response Guidebook

Emergency Response Guidebook

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At sea emergency guide

At sea emergency guide

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Decision trees

Decision trees

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No additional data

last modified 2020-12-11T09:57:21+00:00