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

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Cyclohexane

Description Top

CAS number 110-82-7
UN number 1145
Chemical formula C6H12
Standard European Behaviour Classification (SEBC) Evaporator (E)
GESAMP Hazard profile
A1 A2 B1 B2 C1 C2 C3 D1 D2 D3 E1 E2 E3
3 NR 3 NI 0 0 1 0 1 NI E 2

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
Hexamethylene
Hexanaphthene
Hexahydrobenene
Cyclohexane


Physico-chemical properties Top

Chemical formula C6H12
Molar mass 84.159 [g/mol]
Critical molar volume 0.000308 [m³/mol]
State Liquid at 25°C and 1 atm
Fusion temperature 6.59 [°C]
Boiling temperature 80.73 [°C]
Critical temperature 553.8 [°C]
Density
778.1 [Kg/m³] at a temperature of 20°C
Surface tension
24.68 [mN/m] at a temperature of 20°C
24.16 [mN/m] at a temperature of 25°C
Kinematic viscosity
1.27 [cSt] at a temperature of 20°C
1.1552 [cSt] at a temperature of 25°C
Hydrosolubility
55 [mg/l] at a temperature of 20°C and salinity of 0‰
45 [mg/l] at a temperature of 15°C and salinity of 0‰
Vapour pressure
10265 [Pa] at a temperature of 20°C
15999 [Pa] at a temperature of 30°C
Critical pressure 4080000 [Pa]
Vapour density 2.9
Flash point (Pensky-Martens closed cup) -18 [°C]
Lower explosivity limit (LEL) 1.3 [%]
Upper explosivity limit (UEL) 8.4 [%]
Vaporization enthalpy
356195 [J/Kg] at a temperature of 80.73°C
390810 [J/Kg] at a temperature of 25°C
Combustion enthalpy 46573747 [J/Kg]
Specific heat capacity 1841 [J/(Kg·K)]
Henry's constant 15198.7 [mol/(m³·Pa)]


Behaviour Top

Log Kow 3.4
Log Koc 2.68
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) Evaporator (E)
Bioconcentration factor (BCF) 239


Ecotoxicity Top

Lowest median lethal concentration (LC50) on crustacean 2.4 [mg/l]
Lowest median lethal concentration (LC50) on fishes 8.3 [mg/l]
Highest no observed effect concentration (NOEC) on algae 0.9 [mg/l]
Highest no observed effect concentration (NOEC) on fishes 32 [mg/l]
Assessment factor (AF)
100 on the short-term
Predicted No Effect Concentration (PNEC)
9 [µg/l] on the short-term


Hazards Top

Flammable
Harmful
Health Hazard
Environmental Hazard

Danger

Hazards statements
Physical
H225
Highly flammable liquid and vapour.
Health
H304
May be fatal if swallowed and enters airways.
H315
Causes skin irritation.
H336
May cause drowsiness or dizziness.
Environmental
H400
Very toxic to aquatic life.
H410
Very toxic to aquatic life with long lasting effects.

Precautionary statements
Prevention
P210
Keep away from heat/sparks/open flames/hot surfaces. No smoking.
P243
Take precautionary measures against static discharge.
P273
Avoid release to the environment.
P280
Wear protective gloves/protective clothing/eye protection/face protection.
Response
P331
Do NOT induce vomiting.
P391
Collect spillage.
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.
P332 + P313
If skin irritation occurs: Get medical advice/attention.


GESAMP Top

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

A1: Bioaccumulation
Rating Description
3 Moderate potential to bioaccumulate
A1a:
Rating Description Criteria [mg/l]
3 Moderate potential to bioaccumulate 3 ≤ Log Kow < 4
A1b:
Rating Description Criteria
3 Moderate potential to bioaccumulate 100 ≤ BCF < 500
A2: Biodegradation
Rating Description
NR Not readily biodegradable
B1: Acute aquatic toxicity
Rating Description Criteria [mg/l]
3 Moderately toxic 1 < LC/EC/IC50 ≤ 10
B2: Chronic aquatic toxicity
Rating Description
NI No Information
C1: Acute oral toxicity
Rating Description Criteria [mg/Kg]
0 Negligible 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)
1 Slight 10 < AITE ≤ 20
D1: Skin irritation or corrosion
Rating Description Sign
0 Not irritating No clinical signs and/
D2: Eye irritation
Rating Description Sign GHS category
1 Mildly irritating Mild conjunctival hype Irritant Category 2B
D3: Long-term health effects
Notation Hazard endpoint Description GHS category
No Information
E1: Tainting of seafood
Rating Description
NI No Information
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
2 Moderately objectionable 1 is a persistent floater; and/or 2 is moderately acutely toxic; and/or 3 is irritating to skin and/or eyes; and/or 4 has long-term health effects other than carcinogenicity, mutagenicity or reprotoxicity; and/or 5 is highly flammable; and/or 6 is moderately flammable and is a floater with evaporative properties 1 E2 = Fp; and/or 2 C1 and/or C2 and/or C3 = 23; and/or 3 D1 and/or D2 = 2; and/or 4 D3 contains Ss, Sr, T, A, N, or I; and/or 5 Flashpoint <23°C; and/or 6 Flashpoint 23°C to 60°C and E2 = FE or FED Warning issued and possible closure of amenities

GHS Security Information

Flammable
Harmful
Health Hazard
Environmental 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.