Improving Member States preparedness to face an HNS pollution of the Marine System (HNS-MS)
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
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 |
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| Surface tension |
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| Kinematic viscosity |
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| Hydrosolubility |
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| Vapour pressure |
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| 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 |
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| 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) |
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| Predicted No Effect Concentration (PNEC) |
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Hazards Top
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
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.
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Copyright © 2015–2024 HNS-MS Consortium
HNS-MS has been funded by DG-ECHO under agreement ECHO/SUB/2014/693705 and runs from 1 January 2015 to 31 March 2017.