UN Number: 3082 - CAS Number: 25154-52-3

Also known as: 2,6-DIMETHYL-4-HEPTYL PHENOL, Monononylphenol, Phenol, Nonyl, Nonylphenol, N-Nonylphenol (Mixed Isomers), Nonylphenols
Information on chemical

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List


UN number 3082
CAS number 25154-52-3
Formula C15H24O

Physical chemical data

Physical State (20°C) Liquid
Physical State (25°C) Liquid
Density (kg/m3)
949.4 [Kg/m³] at a temperature of 20°C
Kinematic viscosity (cSt)
2630 [cSt] at a temperature of 20°C
Molar mass (g/mol) 220.36
Density of gas (kg/m3) 9.804
Solubility (g/L)
6 [g/L] at a temperature of 20°C and salinity of 0‰
4 [g/L] at a temperature of 25°C and salinity of 0‰
Boiling Point (°C) 304
Melting Point (°C) 140
Interfacial tension (mN/m)
30 [mN/m] at a temperature of 20°C and salinity of 0‰
Vapour Pressure (Pa)
50 [Pa] at a temperature of 20°C
0.3 [Pa] at a temperature of 25°C
Ignition Temperature (°C) 370
Flash Point (°C) 140
Flash Point (Pensky-Martens closed cup) (°C) 141
Flash Point (Cleveland open cup) (°C) 141
Combus enthalpy (J/Kg) 38200000
Combustion efficiency (%) 70
Mass flow rate of the combustion surface (Kg/(m²·s)) 0.036
Rad fraction (%) 30
Henry's constant (mol/(m³·Pa)) 11.02

Behaviour at sea

Log kow 4.48
Log koc 3.7
Aqueous photolysis (Half-life) Not photolysable
Biodegradation in estuary environment (Half-life) (days) Not hydrolysable
Biodegradation in marine environment (Half-life) (days) 150
Bioconcentration factor (BCF) 1280

Additional data

Colour light yellow, straw colour
Odour medicine odour
MARPOL pollution category
Category Description
X Noxious Liquid Substances which, if discharged into the sea from tank cleaning or deballasting operations, are deemed to present a major hazard to either marine resources or human health and, therefore, justify the prohibition of the discharge into the marine environment.

Transportation data

Package group II
Cargo group 40
State liquid
Temperature (°C) ambient
Pressure (Pa) ambient
Family name glycol ethers

Reactivity data

Acid(s) Yes
Oxidizing agents Yes

GESAMP Hazard profile

Bioaccumulation in logPow (A1A) 5 - ≥5 and ≤ ca.7
Bioaccumulation in BCF (A1B) 4 - ≥500 and <4000
Bioaccumulation (A1) 4 - High potential to bioaccumulate
Biodegradation (A2) NR - Not readily biodegradable
Acute aquatic toxicity (B1) (LC/EC/IC50 (mg/l)) 5 - Very highly toxic
Chronic aquatic toxicity (B2) (NOEC (mg/l)) 3 - High
Acute mammalian toxicity by swallowing (C1) (LD50 (mg/kg)) 1 - Slight
Acute mammalian toxicity by skin penetration (C2) (LD50 (mg/kg)) 0 - Negligible
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) 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

TEEL-1 (mg/m3) 20
TEEL-2 (mg/m3) 125
TEEL-3 (mg/m3) 500


Lowest median lethal concentration (LC50) on algae (mg/l) 0.027
Lowest median lethal concentration (LC50) on crustacean (mg/l) 0.021
Lowest median lethal concentration (LC50) on fishes (mg/l) 0.017
Highest no observed effect concentration (NOEC) on algae (mg/l) 0.0251
Highest no observed effect concentration (NOEC) on crustacean (mg/l) 0.0039
Highest no observed effect concentration (NOEC) on fishes (mg/l) 0.006
Assessment factor (AF)
10 on the Short term
10 on the Long term
Predicted No Effect Concentration (PNEC) (µg/l)
1.7 [µg/l] on the Short term
0.39 [µg/l] on the Long term
Incident reports

Incident reports

No incident reports available

Emergency Response Guidebook

Emergency Response Guidebook

Guide number: 171

See the guide or download the emergency response guidebook

At sea emergency guide

At sea emergency guide

Emergency schedule: 8-15


Emergency procedures


Use of water on substance may cause violent reaction.
Avoid all sources of ignition (e.g. naked lights, unprotected light bulbs, electric handtools).
Turn ship off-wind.

Spillage on deck

Wash overboard with copious quantities of water from as far away as practicable.

Spillage under deck

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

Fire on deck

Use water spray from as far away as practicable. Wash deck in vicinity with copious quantities of water. If possible, remove receptacles likely to be involved or keep them cool with copious quantities of water.

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.

Decision trees

Decision trees

No decision trees available

No additional data

last modified 2023-01-30T14:55:31+00:00

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