HEPTANE

UN Number: 1206 - CAS Number: 142-82-5

Also known as: DIPROPYLMETHANE, Heptane, Heptyl Hydride, N-Heptane
Information on chemical

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List

Description

UN number 1206
CAS number 142-82-5
Formula C7H16

Physical chemical data

Physical State (20°C) Liquid
Physical State (25°C) Liquid
Density (kg/m3)
683.8 [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
Kinematic viscosity (cSt)
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
Molar mass (g/mol) 100.21
Density of gas (kg/m3) 4.463
Solubility (g/L)
3 [g/L] at a temperature of 25°C and salinity of 0‰
3.2 [g/L] at a temperature of 20°C and salinity of 0‰
2.8 [g/L] at a temperature of 20°C and salinity of 5‰
0.48 [g/L] at a temperature of 20°C and salinity of 30‰
Boiling Point (°C) 98
Melting Point (°C) -91
Surface tension (mN/m)
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 (mN/m)
51 [mN/m] at a temperature of 20°C and salinity of 0‰
Vapour Pressure (Pa)
4799 [Pa] at a temperature of 20°C
6133 [Pa] at a temperature of 25°C
Ignition Temperature (°C) 220
Flash Point (°C) -4
Flash Point (Pensky-Martens closed cup) (°C) -4
Lower explosivity limit (LEL) (volume %) 1.2
Upper explosivity limit (UEL) (volume %) 6.7
Vapor enthalpy (J/Kg)
317065 [J/Kg] at a temperature of 98°C
364960 [J/Kg] at a temperature of 25°C
Combus enthalpy (J/Kg) 44600000
Specific heat capacity (J/(Kg·K)) 2242.4
Combustion efficiency (%) 97
Mass flow rate of the combustion surface (Kg/(m²·s)) 0.11
Rad fraction (%) 33
Henry's constant (mol/(m³·Pa)) 202650

Behaviour at sea

Log kow 4.66
Aqueous photolysis (Half-life) Not photolysable
Biodegradation in estuary environment (Half-life) (days) Not hydrolysable
Biodegradation in marine environment (Half-life) (days) 10
Bioconcentration factor (BCF) 1480

Additional data

Colour colourless
Odour gasoline odour
MARPOL pollution category
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.

Transportation data

Package group II
Cargo group 31
State liquid
Temperature (°C) ambient
Pressure (Pa) ambient
Family name paraffins
IMO class 3.2

Reactivity data

Water No
Static electricity Yes

GESAMP Hazard profile

Bioaccumulation in logPow (A1A) 4 - ≥4 and <5
Bioaccumulation (A1) 4 - High potential to bioaccumulate
Biodegradation (A2) R - Readily biodegradable
Acute aquatic toxicity (B1) (LC/EC/IC50 (mg/l)) 4 - Highly toxic
Acute mammalian toxicity by swallowing (C1) (LD50 (mg/kg)) 0 - Negligible
Acute mammalian toxicity by skin penetration (C2) (LD50 (mg/kg)) 0 - Negligible
Acute mammalian toxicity by inhalation (C3) (LC50 (mg/l)) 0 - Negligible
Skin irritation/corrosivity (D1) 1 - Mildly irritating
Eye irritation/corrosivity (D2) 1 - Mildly irritating
Specific Health Concern (D3) A - Aspiration
Interference with coastal amenities (E2) E - Evaporator
Effects on wildlife and bottom habitats (E3) 2 - Is a persistent floater; and/or is moderately acutely toxic; and/or is irritating to skin and/or eyes; and/or has long-term health effects other than carcinogenicity, mutagenicity or reprotoxicity; and/or is highly flammable; and/or is flammable and is a floater with evaporative properties

Human toxicity threshold

Environmental Hazard Flammable Harmful Health Hazard
IDHL 5000
Hazard 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
P301 + P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P331 Do NOT induce vomiting.
Disposal
P501 Dispose of contents/container to ...
TLV-TWA 400
TEEL-1 (mg/m3) 440 ppm
TEEL-2 (mg/m3) 440 ppm
TEEL-3 (mg/m3) 750 ppm

Ecotoxicity

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

Incident reports

No incident reports available

Emergency Response Guidebook

Emergency Response Guidebook

Guide number: 128

See the guide or download the emergency response guidebook

At sea emergency guide

At sea emergency guide

Emergency schedule: 3-07

• 1 CLASS 3.1
FLAMMABLE LIQUIDS, FLASHPOINT BELOW -18°C Closed Cup; NOT COVERED BY OTHER SCHEDULES; IMMISCIBLE WITH WATER.
• 2 CLASS 3.2
FLAMMABLE LIQUIDS, FLASHPOINT BETWEEN -18°C AND 23°C Closed Cup; NOT COVERED BY OTHER SCHEDULES; IMMISCIBLE WITH WATER.
• 3 CLASS 3.3
FLAMMABLE LIQUIDS, FLASHPOINT BETWEEN 23°C AND 61°C Closed Cup; NOT COVERED BY OTHER SCHEDULES; IMMISCIBLE WITH WATER.

Emergency procedures

Action

Avoid all sources of ignition (e.g. naked lights, unprotected light bulbs, electric handtools).

Spillage on deck

Wash spillage overboard with copious quantities of water.

Spillage under deck

Provide adequate ventilation. Collect spillage, where practicable, using absorbent material, for safe disposal.

Fire on deck

Use water spray, foam or dry chemical. Do NOT use water jet. If possible remove receptacles likely to be involved or keep them cool with copious quantities of water.

Fire under deck

Batten down; use ship's fixed fire-fighting installation. Otherwise adopt action as for "On deck".

Special equipment to be carried

Protective gloves and boots.
Self-contained breathing apparatus.
Spray nozzles.

Remarks by UN no.

• 2-ETHYLBUTYL ACETATE (UN No. 1177)
Self-contained breathing apparatus not necessary - use goggles for eye protection.

• ISOPROPYL NITRATE (UN No. 1222)
In fire, explosion hazard.

• PINE OIL (UN No. 1272)
Self-contained breathing apparatus not necessary - use goggles for eye protection.

• ZIRCONIUM SUSPENDED IN A FLAMMABLE LIQUID (UN No. 1308)
Spillage is liable to self-ignition. Use water spray from as many hoses as possible from as far away as practicable.

• normal-PROPYL NITRATE (UN No. 1865)
In fire, explosion hazard.

• CYCLOPENTANOL (UN No. 2244)
• normal-UNDECANE (UN No. 2330)
Self-contained breathing apparatus not necessary - use goggles for eye protection.

• 3-BROMOPROPYNE (UN No. 2345)
In fire, explosion hazard. Fight fire from a protected position.

• TETRAMETHYLSILANE (UN No. 2749)
Possible self-ignition at ambient temperatures.

• ELEVATED TEMPERATURE LIQUID, FLAMMABLE, N.O.S. (UN No. 3256), with
flashpoint above 61°C c.c., at or above its flashpoint .
Spilled liquid may be very hot and remain above its flashpoint for some time after spillage.

Decision trees

Decision trees

No decision trees available

No additional data

last modified 2020-12-14T09:02:33+00:00