UN Number: 2810 - CAS Number: 87-61-6

Also known as: 1,2,6-Trichlorobenzene, Vic-Trichlorobenzene, 1,2,3-Tcb, 1,2,3-Trcb, 1,2,3-Trichlorobenzene, Trichloro-1,2,3 Benzene
Information on chemical

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List


UN number 2810
CAS number 87-61-6
Formula C6H3Cl3

Physical chemical data

Physical State (25°C) Solid
Kinematic viscosity (cSt)
1.16 [cSt] at a temperature of 50°C
Molar mass (g/mol) 181.46
Solubility (g/L)
18 [g/L] at a temperature of 25°C and salinity of 0‰
Boiling Point (°C) 218.5
Melting Point (°C) 51.3
Critical temperature (°C) 762.5
Critical pressure (Pa) 3010000
Flash Point (Pensky-Martens closed cup) (°C) 113
Henry's constant (mol/(m³·Pa)) 126.7

Behaviour at sea

Log kow 4.05
Log koc 3.14
Aqueous photolysis (Half-life) Not photolysable
Biodegradation in estuary environment (Half-life) (days) Not hydrolysable
Bioconcentration factor (BCF) 1300

Additional data

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

Reactivity data

GESAMP Hazard profile

Bioaccumulation in logPow (A1A) 4 - ≥4 and <5
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)) 4 - Highly 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)) 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) S - Sinking substance that would deposit on the seabed, not likely to dissolve quickly
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

Environmental Hazard Harmful
Hazard statements
H317 May cause an allergic skin reaction.
H410 Very toxic to aquatic life with long lasting effects.
Precautionary statements
P262 Do not get in eyes, on skin, or on clothing.
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.


Lowest median lethal concentration (LC50) on crustacean (mg/l) 0.08
Lowest median lethal concentration (LC50) on fishes (mg/l) 0.348
Highest no observed effect concentration (NOEC) on fishes (mg/l) 0.9
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

No guides available

Decision trees

Decision trees

No decision trees available

No additional data

last modified 2020-12-14T09:03:00+00:00