ISOBUTANE

UN Number: 1969

Information on chemical

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List

Description

UN number 1969

Physical chemical data

Physical State (20°C) Gas
Density (kg/m3)
2.709 [Kg/m³] at a temperature of 20°C
Molar mass (g/mol) 58.12
Density of gas (kg/m3) 2.709
Boiling Point (°C) -11.6
Melting Point (°C) -160
Vapour Pressure (Pa)
202600 [Pa] at a temperature of 20°C
Ignition Temperature (°C) 460
Flash Point (°C) -20
Lower explosivity limit (LEL) (volume %) 1.8
Upper explosivity limit (UEL) (volume %) 8.4

Behaviour at sea

Additional data

Colour colourless
Odour odourless

Transportation data

State liq.compr.gas
Temperature (°C) ambient
Pressure (Pa) under pressure
IMO class 2(2.1)

Reactivity data

GESAMP Hazard profile

Human toxicity threshold

TEEL-1 (mg/m3) 3000 ppm
TEEL-2 (mg/m3) 5000 ppm
TEEL-3 (mg/m3) 15000 ppm

Ecotoxicity

Incident reports

Incident reports

No incident reports available

Emergency Response Guidebook

Emergency Response Guidebook

Guide number: 115

See the guide or download the emergency response guidebook

At sea emergency guide

At sea emergency guide

Emergency schedule: 2-07

LIQUEFIED GASES, FLAMMABLE.

Emergency procedures

Action

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

Spillage on deck

Stop leak if practicable. Let spilt liquid evaporate.

Spillage under deck

Provide adequate ventilation. Stop leak if practicable. Let spilt liquid evaporate.

Fire on deck

Use water spray, foam or dry chemical from as far away as practicable.
Keep adjacent receptacles cool with copious quantities of water. Remove undamaged cooled receptacles to a safe place.

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.
Self-contained breathing apparatus.
Spray nozzles.

Remarks by UN no.

• ACETYLENE, DISSOLVED (UN No. 1001)
Care! Heated receptacles should be jettisoned as possible explosion hazard.

Decision trees

Decision trees

No decision trees available

No additional data

last modified 2020-12-14T09:02:36+00:00