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

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N-Heptane

Description Top

CAS number 142-82-5
UN number 1206
Chemical formula C7H16
Standard European Behaviour Classification (SEBC) Evaporator (E)
GESAMP Hazard profile
A1 A2 B1 B2 C1 C2 C3 D1 D2 D3 E1 E2 E3
4 R 4 NI 0 0 0 1 1 A NI E 2

Marine pollution Classification (MARPOL Annex II)
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.

Alternate names for this chemical
Dipropylmethane
Heptane
Heptyl Hydride
N-Heptane


Physico-chemical properties Top

Chemical formula C7H16
Molar mass 100.2 [g/mol]
State Liquid at 25°C and 1 atm
Fusion temperature -91 [°C]
Boiling temperature 98 [°C]
Density
680 [Kg/m³] at a temperature of 20°C
697.1 [Kg/m³] at a temperature of 5°C
693.8 [Kg/m³] at a temperature of 10°C
685.3 [Kg/m³] at a temperature of 20°C
Surface tension
19.3 [mN/m] at a temperature of 20°C
19.65 [mN/m] at a temperature of 25°C
21.6 [mN/m] at a temperature of 6°C
21.08 [mN/m] at a temperature of 10.1°C
20.32 [mN/m] at a temperature of 18.1°C
Interfacial tension
51 [mN/m] at a temperature of 20°C and salinity of 0‰
Kinematic viscosity
0.6 [cSt] at a temperature of 20°C
0.57 [cSt] at a temperature of 25°C
2.037 [cSt] at a temperature of 5°C
1.989 [cSt] at a temperature of 10°C
1.9408 [cSt] at a temperature of 20°C
Hydrosolubility
3 [mg/l] at a temperature of 25°C and salinity of 0‰
3.2 [mg/l] at a temperature of 20°C and salinity of 0‰
2.8 [mg/l] at a temperature of 20°C and salinity of 5‰
0.48 [mg/l] at a temperature of 20°C and salinity of 30‰
Vapour pressure
5300 [Pa] at a temperature of 20°C
6133 [Pa] at a temperature of 25°C
Vapour density 3.4
Flash point (Pensky-Martens closed cup) -4 [°C]
Lower explosivity limit (LEL) 1.05 [%]
Upper explosivity limit (UEL) 6.7 [%]
Vaporization enthalpy
317065 [J/Kg] at a temperature of 98°C
364960 [J/Kg] at a temperature of 25°C
Combustion enthalpy 44600000 [J/Kg]
Specific heat capacity 2242.4 [J/(Kg·K)]
Combustion efficiency 97 [%]
Mass flow rate of the combustion surface 0.11 [Kg/(m²·s)]
Radiative fraction 33 [%]
Henry's constant 202650 [mol/(m³·Pa)]


Behaviour Top

Log Kow 4.66
Hydrolysis (Half-life) Not hydrolysable
Aqueous photolysis (Half-life) Not photolysable
Biodegradation in estuary environment (Half-life) 10 days
Biodegradation in marine environment (Half-life) 10 days
Standard European Behaviour Classification (SEBC) Evaporator (E)
Bioconcentration factor (BCF) 1480


Ecotoxicity Top

Lowest median lethal concentration (LC50) on crustacean 0.1 [mg/l]
Lowest median lethal concentration (LC50) on fishes 4 [mg/l]
Highest no observed effect concentration (NOEC) on crustacean 0.17 [mg/l]
Highest no observed effect concentration (NOEC) on fishes 1.284 [mg/l]


Hazards Top

Flammable
Harmful
Health Hazard
Environmental Hazard

Danger

IDLH 750 [ppm]
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
H410
Very toxic to aquatic life with long lasting effects.

Precautionary statements
General
P102
Keep out of reach of children.
Prevention
P210
Keep away from heat/sparks/open flames/hot surfaces. No smoking.
P273
Avoid release to the environment.
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.
Disposal
P501
Dispose of contents/container to ...


GESAMP Top

More information on GESAMP Hazard Evaluation Procedure

GESAMP Hazard profile
A1 A2 B1 B2 C1 C2 C3 D1 D2 D3 E1 E2 E3
4 R 4 NI 0 0 0 1 1 A NI E 2

A1: Bioaccumulation
Rating Description
4 High potential to bioaccumulate
A1a:
Rating Description Criteria [mg/l]
4 High potential to bioaccumulate 4 ≤ Log Kow < 5
A1b:
Rating Description
NI No Information
A2: Biodegradation
Rating Description
R Readily biodegradable
B1: Acute aquatic toxicity
Rating Description Criteria [mg/l]
4 Highly toxic 0.1 < LC/EC/IC50 ≤ 1
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)
0 Negligible AITE > 20
D1: Skin irritation or corrosion
Rating Description Sign GHS category
1 Mildly irritating Mild erythema with or Mild Irritant Category 3
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
A Aspiration Lung injury or chemical pneumonia following aspiration of a chemical through the oral or nasal cavity into the trachea or lower respiratory system Category 1 for Aspiration Toxicity
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.

  Consortium

  Contact us

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

Tel : +32 (0)2 773-2102

Mail : hns-ms@naturalsciences.be

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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.