DIISOBUTYL KETONE

UN Number: 1157 - CAS Number: 108-83-8

Also known as: DIBK (T), DIISOBUTYLCETONE, S-DIISOPROPYLACETONE, sym-DI ISOPROPYL ACETONE, 2,6-DIMETHYL-4-HEPTANONE, 2,6-DIMETHYL-HEPTAN-4-ONE
Information on chemical

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List

Description

UN number 1157
CAS number 108-83-8

Physical chemical data

Physical State (20°C) Liquid
Density (kg/m3)
806 [Kg/m³] at a temperature of 20°C
Molar mass (g/mol) 142.23
Density of gas (kg/m3) 2.451
Boiling Point (°C) 163
Melting Point (°C) -42
Vapour Pressure (Pa)
227 [Pa] at a temperature of 20°C
Ignition Temperature (°C) 396
Flash Point (°C) 49
Lower explosivity limit (LEL) (volume %) 0.81
Upper explosivity limit (UEL) (volume %) 7.1

Behaviour at sea

Additional data

Colour colourless
Odour mild sweet odour
Standard behavior classification D, FD, F

Transportation data

Package group III
Cargo group 18
State liquid
Temperature (°C) ambient
Pressure (Pa) ambient
Family name ketones
IMO class 3.3

Reactivity data

Water No
Acid(s) Yes
Base(s) Yes
Metal(s) and alloys No
Oxidizing agents Yes
Reducing agents No
Combustibles No
Organic substance No

GESAMP Hazard profile

Bioaccumulation in logPow (A1A) 3 - ≥3 and <4
Bioaccumulation (A1) 3 - Moderate potential to bioaccumulate
Biodegradation (A2) R - Readily biodegradable
Acute aquatic toxicity (B1) (LC/EC/IC50 (mg/l)) 2 - Slightly 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)) 2 - Moderate
Skin irritation/corrosivity (D1) 2 - Irritating
Eye irritation/corrosivity (D2) 2 - Irritating
Interference with coastal amenities (E2) F - Floating substance, not likely to evaporate or to dissolve quickly
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

IDHL 2000
TLV-TWA 25
TEEL-1 (mg/m3) 50 ppm
TEEL-2 (mg/m3) 50 ppm
TEEL-3 (mg/m3) 500 ppm

Ecotoxicity

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 2020-12-14T09:02:20+00:00