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Improving Member States preparedness to face an HNS pollution of the Marine System (HNS-MS)

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Benzene

Description Top

CAS number 71-43-2
UN number 1114
Chemical formula C6H6
Accident occurred Yes
Standard European Behaviour Classification (SEBC) Evaporator (E)
GESAMP Hazard profile
A1 A2 B1 B2 C1 C2 C3 D1 D2 D3 E1 E2 E3
1 R 2 NI 1 0 0 2 2 CMT NT E 3

Marine pollution Classification (MARPOL Annex II)
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.

Alternate names for this chemical
Benzol
Carbon Oil
Coal Naphtha
Cyclohexatriene
Phenyl Hydride
(6)Annulene
Benzole
Benzolene
Pyrobenzol
Pyrobenzole
Benzene


Physico-chemical properties Top

Chemical formula C6H6
Molar mass 78.11 [g/mol]
Critical molar volume 0.000265 [m³/mol]
State Liquid at 25°C and 1 atm
Fusion temperature 5.5 [°C]
Boiling temperature 80.1 [°C]
Critical temperature 562.05 [°C]
Density
880 [Kg/m³] at a temperature of 20°C
Surface tension
28.9 [mN/m] at a temperature of 20°C
28.22 [mN/m] at a temperature of 25°C
Interfacial tension
35 [mN/m] at a temperature of 20°C and salinity of 0‰
Kinematic viscosity
0.74 [cSt] at a temperature of 20°C
0.69 [cSt] at a temperature of 25°C
Hydrosolubility
1780 [mg/l] at a temperature of 20°C and salinity of 0‰
1800 [mg/l] at a temperature of 25°C and salinity of 0‰
1360 [mg/l] at a temperature of 25°C and salinity of 35‰
Vapour pressure
9970 [Pa] at a temperature of 20°C
12700 [Pa] at a temperature of 25°C
Critical pressure 4895000 [Pa]
Vapour density 2.8
Flash point (Pensky-Martens closed cup) -11 [°C]
Lower explosivity limit (LEL) 1.2 [%]
Upper explosivity limit (UEL) 8 [%]
Vaporization enthalpy
393292 [J/Kg] at a temperature of 80.1°C
433107 [J/Kg] at a temperature of 25°C
Combustion enthalpy 40100000 [J/Kg]
Specific heat capacity 1745 [J/(Kg·K)]
Combustion efficiency 70 [%]
Mass flow rate of the combustion surface 0.09 [Kg/(m²·s)]
Radiative fraction 60 [%]
Henry's constant 545 [mol/(m³·Pa)]


Behaviour Top

Log Kow 2.13
Log Koc 1.85
Hydrolysis (Half-life) Not hydrolysable
Aqueous photolysis (Half-life) Not photolysable
Biodegradation in estuary environment (Half-life) 15 days
Biodegradation in marine environment (Half-life) 50 days
Standard European Behaviour Classification (SEBC) Evaporator (E)
Bioconcentration factor (BCF) 11


Ecotoxicity Top

Lowest median lethal concentration (LC50) on algae 29 [mg/l]
Lowest median lethal concentration (LC50) on crustacean 10 [mg/l]
Lowest median lethal concentration (LC50) on fishes 4.9 [mg/l]
Highest no observed effect concentration (NOEC) on algae 9.6 [mg/l]
Highest no observed effect concentration (NOEC) on crustacean 3 [mg/l]
Highest no observed effect concentration (NOEC) on fishes 0.8 [mg/l]
Assessment factor (AF)
100 on the short-term
100 on the long-term
Predicted No Effect Concentration (PNEC)
49 [µg/l] on the short-term
8 [µg/l] on the long-term


Hazards Top

Flammable
Harmful
Health Hazard

Danger

IDLH 500 [ppm]
Hazards statements
Physical
H225
Highly flammable liquid and vapour.
Health
H304
May be fatal if swallowed and enters airways.
H315
Causes skin irritation.
H319
Causes serious eye irritation.
H340
May cause genetic defects. Exposure cause the hazard:
H350
May cause cancer.
H372
Causes damage to organs through prolonged or repeated exposure, exposure cause the hazard:

Precautionary statements
Prevention
P202
Do not handle until all safety precautions have been read and understood.
P210
Keep away from heat/sparks/open flames/hot surfaces. No smoking.
P243
Take precautionary measures against static discharge.
P280
Wear protective gloves/protective clothing/eye protection/face protection.
Response
P331
Do NOT induce vomiting.
P301 + P310
IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P303 + P361 + P353
IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.


GESAMP Top

GESAMP Hazard profile
A1 A2 B1 B2 C1 C2 C3 D1 D2 D3 E1 E2 E3
1 R 2 NI 1 0 0 2 2 CMT NT E 3

A1: Bioaccumulation
Rating Description
1 Very low potential to bioaccumulate
A1a:
Rating Description Criteria [mg/l]
2 Low potential to bioaccumulate 2 ≤ Log Kow < 3
A1b:
Rating Description Criteria
1 Very low potential to bioaccumulate 1 ≤ BCF < 10
A2: Biodegradation
Rating Description
R Readily biodegradable
B1: Acute aquatic toxicity
Rating Description Criteria [mg/l]
2 Slightly toxic 10 < LC/EC/IC50 ≤ 100
B2: Chronic aquatic toxicity
Rating Description
NI No Information
C1: Acute oral toxicity
Rating Description Criteria [mg/Kg]
1 Slight 300 < AOTE ≤ 2000
C2: Acute dermal toxicity (skin contact)
Rating Description Criteria [mg/Kg]
0 Negligible ADTE > 2000
C3: Acute inhalation toxicity
Rating Description Criteria [mg/l] (4 hours exposure)
0 Negligible AITE > 20
D1: Skin irritation or corrosion
Rating Description Sign GHS category
2 Irritating Marked erythema, Obvio Irritant Category 2
D2: Eye irritation
Rating Description Sign GHS category
2 Irritating Marked conjunctival hy Irritant Category 2A
D3: Long-term health effects
Notation Hazard endpoint Description GHS category
C Carcinogenicity Chemicals which have been shown to induce or increase the incidence of cancer Category 1 for Carcinogens
M Mutagenicity Cause a permanent change in the amount or structure of genetic material in cells Categories 1 and 2 for Germ Cell Mutagens
T Specific Target, Organ Toxicity following single or repeated exposure Significant changes which affect the morphology or biochemistry of tissues or organs; organ dysfunction up to death Categories 1 and 2 for Specific Target Organ Toxicity Single (STOT-SE) or Repeated Exposure (STOT-RE)
E1: Tainting of seafood
Rating Description
NT The substance has been tested for tainting and found not to taint following exposure of the fish for 24h to 1mg/l.
E2: Behaviour of chemicals in the marine environment
Rating Description
E Evaporator
E3: Interference with the use of coastal amenities
Rating Interference Description Interpretation Warning
3 Highly objectionable 1 is highly acutely toxic; and/or 2 is severely irritant or corrosive to skin or eyes; and/or 3 is carcinogenic, mutagenic or reprotoxic; and/or 4 is a floater or persistent floater with associated health effects 1 C1 and/or C2 and/or C3 = 4; and/or 2 D1 or D2 = 3, 3A, 3B, or 3C; and/or 3 D3 contains C, M or R; and/or 4 E2 = F or Fp and D3 contains Ss, Sr, T, A, N, or I Warning issued leading to the closure of amenities

GHS Security Information

Flammable
Harmful
Health Hazard

Danger

  About the project

HNS-MS is a decision-support tool that Belgian and French maritime authorities as well as coastguard stations can activate in order to forecast the drift, fate and behavior of acute marine pollution by Harmful Noxious Substances (HNS) accidentally released in the marine system.

  Contact us

Web: https://www.hns-ms.eu/

Tel : +32 (0)2 773-2102

Mail : hns-ms@naturalsciences.be

Copyright © 2015–2019 HNS-MS Consortium

EU flagHNS-MS has been funded by DG-ECHO under agreement ECHO/SUB/2014/693705 and runs from 1 January 2015 to 31 March 2017.