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

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Methylene Chloride

Description Top

CAS number 1975-09-02
UN number 1593
Chemical formula CH2Cl2
Standard European Behaviour Classification (SEBC) Sinker that dissolves (SD)
Notable risks On combustion, forms toxic and corrosive fumes Reacts with alkalis.
GESAMP Hazard profile
A1 A2 B1 B2 C1 C2 C3 D1 D2 D3 E1 E2 E3
2 NR 1 0 1 0 0 2 2 C NI SD 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
Dichloromethane
Methylene Dichloride
Methane Dichloride
Methylene Bichloride
Dcm
Methylene Chloride


Physico-chemical properties Top

Chemical formula CH2Cl2
Molar mass 84.93 [g/mol]
State Liquid at 25°C and 1 atm
Fusion temperature -95.1 [°C]
Boiling temperature 40 [°C]
Critical temperature 510 [°C]
Density
1330 [Kg/m³] at a temperature of 20°C
Surface tension
28.33 [mN/m] at a temperature of 20°C
27.2 [mN/m] at a temperature of 25°C
Kinematic viscosity
0.32 [cSt] at a temperature of 20°C
0.31132 [cSt] at a temperature of 25°C
Hydrosolubility
20000 [mg/l] at a temperature of 20°C and salinity of 0‰
16700 [mg/l] at a temperature of 25°C and salinity of 0‰
Vapour pressure
46500 [Pa] at a temperature of 20°C
58200 [Pa] at a temperature of 25°C
Critical pressure 6100000 [Pa]
Vapour density 3.4
Lower explosivity limit (LEL) 16 [%]
Upper explosivity limit (UEL) 23 [%]
Vaporization enthalpy
330390 [J/Kg] at a temperature of 40°C
339338 [J/Kg] at a temperature of 25°C
Combustion enthalpy 6050000 [J/Kg]
Specific heat capacity 1191.6 [J/(Kg·K)]
Combustion efficiency 33 [%]
Mass flow rate of the combustion surface 0.03 [Kg/(m²·s)]
Radiative fraction 40 [%]
Henry's constant 206 [mol/(m³·Pa)]


Behaviour Top

Log Kow 1.3
Log Koc 1.4
Hydrolysis (Half-life) Not hydrolysable
Aqueous photolysis (Half-life) Not photolysable
Biodegradation in estuary environment (Half-life) Not biodegradable
Biodegradation in marine environment (Half-life) Not biodegradable
Standard European Behaviour Classification (SEBC) Sinker that dissolves (SD)
Bioconcentration factor (BCF) 40


Ecotoxicity Top

Lowest median lethal concentration (LC50) on algae 500 [mg/l]
Lowest median lethal concentration (LC50) on crustacean 108.5 [mg/l]
Lowest median lethal concentration (LC50) on fishes 97 [mg/l]
Highest no observed effect concentration (NOEC) on algae 550 [mg/l]
Highest no observed effect concentration (NOEC) on fishes 82.5 [mg/l]
Assessment factor (AF)
50 on the short-term
50 on the long-term
Predicted No Effect Concentration (PNEC)
1940 [µg/l] on the short-term
1650 [µg/l] on the long-term


Hazards Top

Health Hazard

Danger

Hazards statements
Health
H351
Suspected of causing cancer.

Precautionary statements
Prevention
P201
Obtain special instructions before use.
P202
Do not handle until all safety precautions have been read and understood.
P281
Use personal protective equipment as required.
Response
P308 + P313
IF exposed or concerned: Get medical advice/attention.
Storage
P405
Store locked up.
Disposal
P501
Dispose of contents/container to ...


GESAMP Top

GESAMP Hazard profile
A1 A2 B1 B2 C1 C2 C3 D1 D2 D3 E1 E2 E3
2 NR 1 0 1 0 0 2 2 C NI SD 3

A1: Bioaccumulation
Rating Description
2 Low potential to bioaccumulate
A1a:
Rating Description Criteria [mg/l]
1 Very low potential to bioaccumulate 1 ≤ Log Kow < 2
A1b:
Rating Description Criteria
2 Low potential to bioaccumulate 10 ≤ BCF < 100
A2: Biodegradation
Rating Description
NR Not readily biodegradable
B1: Acute aquatic toxicity
Rating Description Criteria [mg/l]
1 Practically non-toxic 100 < LC/EC/IC50 ≤ 1000
B2: Chronic aquatic toxicity
Rating Description Criteria [mg/l]
0 Negligible NOEC > 1
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
E1: Tainting of seafood
Rating Description
NI No Information
E2: Behaviour of chemicals in the marine environment
Rating Description
SD Sinker that dissolves
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

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.