METHYL ISOBUTYL KETONE

UN Number: 1245 - CAS Number: 108-10-1

Also known as: Hexanone, Hexone, Isobutyl Methyl Ketone, Isopropylacetone, 4-Methyl-2-Oxopentane, 2-Methyl-4-Pentanone, 4-Methyl-2-Pentanone, 2-Methylpropyl Methyl Ketone, Mibk, Methyl Isobutyl Cetone, Mic, Methyl Isobutyl Ketone

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List

Description

UN number	1245
CAS number	108-10-1
Formula	C₆H₁₂O

Physical chemical data

Physical State (20°C)

Liquid

Physical State (25°C)

Liquid

Density (kg/m3)

302 [Kg/m³] at a temperature of 20°C

                                                                
                                                                    814.5 [Kg/m³]
                                                                    at a temperature of
                                                                    5°C

                                                                
                                                                    810.2 [Kg/m³]
                                                                    at a temperature of
                                                                    10°C

                                                                
                                                                    803.1 [Kg/m³]
                                                                    at a temperature of
                                                                    20°C

Kinematic viscosity (cSt)

0.76 [cSt] at a temperature of 20°C

0.68424 [cSt] at a temperature of 25°C

                                                                
                                                                    2.3327 [cSt]
                                                                    at a temperature of
                                                                    5°C

                                                                
                                                                    2.8511 [cSt]
                                                                    at a temperature of
                                                                    10°C

                                                                
                                                                    2.2164 [cSt]
                                                                    at a temperature of
                                                                    20°C

Molar mass (g/mol)

100.16

Density of gas (kg/m3)

4.463

Solubility (g/L)

18000 [g/L] at a temperature of 20°C and salinity of 0‰

Boiling Point (°C)

116.4

Melting Point (°C)

-80

Critical temperature (°C)

574.6

Critical pressure (Pa)

3270000

Surface tension (mN/m)

23.6 [mN/m] at a temperature of 20°C

                                                                
                                                                    24.47 [mN/m]
                                                                    at a temperature of
                                                                    5.1°C

                                                                
                                                                    23.73 [mN/m]
                                                                    at a temperature of
                                                                    11.8°C

                                                                
                                                                    23.61 [mN/m]
                                                                    at a temperature of
                                                                    18.2°C

Vapour Pressure (Pa)

799 [Pa] at a temperature of 20°C

2640 [Pa] at a temperature of 25°C

Ignition Temperature (°C)

460

Flash Point (°C)

Flash Point (Pensky-Martens closed cup) (°C)

Flash Point (Cleveland open cup) (°C)

Lower explosivity limit (LEL) (volume %)

1.4

Upper explosivity limit (UEL) (volume %)

7.5

Vapor enthalpy (J/Kg)

342299 [J/Kg] at a temperature of 116.2°C

403037 [J/Kg] at a temperature of 25°C

Combus enthalpy (J/Kg)

34700000

Specific heat capacity (J/(Kg·K))

2116.9

Combustion efficiency (%)

Mass flow rate of the combustion surface (Kg/(m²·s))

0.06

Rad fraction (%)

Henry's constant (mol/(m³·Pa))

Behaviour at sea

Persistence (days)	0.8
Log kow	1.38
Log koc	2.1
Aqueous photolysis (Half-life)	Not photolysable
Biodegradation in estuary environment (Half-life) (days)	Not hydrolysable
Biodegradation in marine environment (Half-life) (days)	50
Bioconcentration factor (BCF)	6

Additional data

Colour

colourless

Odour

mild pleasant odour

MARPOL pollution category

Category	Description
Z	Noxious Liquid Substances which, if discharged into the sea from tank cleaning or deballasting operations, are deemed to present a minor hazard to either marine resources or human health and therefore justify less stringent restrictions on the quality and quantity of the discharge into the marine environment.

Standard behavior classification

FED

Transportation data

Package group	II
Cargo group	18
State	liquid
Temperature (°C)	ambient
Pressure (Pa)	ambient
Family name	ketones
IMO class	3.2

Reactivity data

Acid(s)	Yes
Base(s)	Yes
Static electricity	Yes
Oxidizing agents	Yes
Notable risks	Reacts with oxidizers.

GESAMP Hazard profile

Bioaccumulation in logPow (A1A)	1 - ≥1 and <2
Bioaccumulation (A1)	1 - Very low potential to bioaccumulate
Biodegradation (A2)	R - Readily biodegradable
Acute aquatic toxicity (B1) (LC/EC/IC50 (mg/l))	1 - Practically non-toxic
Chronic aquatic toxicity (B2) (NOEC (mg/l))	0 - Negligible
Acute mammalian toxicity by swallowing (C1) (LD50 (mg/kg))	1 - Slight
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)	3 - Severely irritating, with irreversible corneal injury
Interference with coastal amenities (E2)	FED - Floater/Evaporator/Dissolver
Effects on wildlife and bottom habitats (E3)	3 - Is highly acutely toxic; and/or is severely irritant or corrosive to skin or eyes; and/or is carcinogenic, mutagenic or reprotoxic; and/or is a floater or persistent floater with associated health effects

Human toxicity threshold

IDHL

500

Hazard statements

Physical

H225	Highly flammable liquid and vapour.

Health

H319	Causes serious eye irritation.
H332	Harmful if inhaled.
H335	May cause respiratory irritation.

Precautionary statements

Prevention

P210	Keep away from heat/sparks/open flames/hot surfaces. No smoking.
P261	Avoid breathing dust/fume/gas/mist/vapours/spray.

Response

P305 + P351 + P338

IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

TLV-TWA

100

Ecotoxicity

Lowest median lethal concentration (LC50) on algae (mg/l)

2000

Lowest median lethal concentration (LC50) on crustacean (mg/l)

1230

Lowest median lethal concentration (LC50) on fishes (mg/l)

505

Highest no observed effect concentration (NOEC) on crustacean (mg/l)

7.8

Highest no observed effect concentration (NOEC) on fishes (mg/l)

Assessment factor (AF)

500 on the Long term

Predicted No Effect Concentration (PNEC) (µg/l)

15.6 [µg/l] on the Long term

Incident reports

No incident reports available

Emergency Response Guidebook

Guide number: 127

See the guide or download the emergency response guidebook

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

Flammable

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No decision trees available

No additional data