Product Identification

Product Name

5-Methyl-2-hexanone

Synonyms

Methyl isoamyl ketone
Methylhexanone

CAS

110-12-3

Formula

C7H14O

Molecular Weight

114.21

EINECS

203-737-8

RTECS

MP3850000

RTECS Class

Agricultural Chemical and Pesticide; Primary Irritant

Beilstein/Gmelin

506163

Beilstein Reference

4-01-00-03329

EC Index Number

606-026-00-4

EC Class

Flammable; Harmful

Physical and Chemical Properties

Appearance

Colorless liquid, pleasant odor.

Solubility in water

5 g/L

Melting Point

-74

Boiling Point

144

Vapor Pressure

6

Density

0.83 g/cm3 (0 C)

Partition Coefficient

1.88

Heat Of Vaporization

35.02 kj/mol @ 101.3 kPa

Usage

Solvent for nitrocellulose, cellulose acetate, butyrate, acrylics, & vinyl copolymers.

Saturation Concentration

6580 ppm (0.66%) at 20 C (calculated)

Vapor Density

3.9

Odor threshold

0.012 ppm

Refractive Index

1.4078 (20 C)

First Aid Measures

Ingestion

If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.

Inhalation

Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.

Skin

Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.

Eyes

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Handling and Storage

Storage

Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area.

Handling

Wash thoroughly after handling. Use only in a well ventilated area. Ground and bond containers when transferring material. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.

Hazards Identification

Inhalation

May cause respiratory tract irritation. Vapors may cause dizziness or suffocation.

Skin

May cause skin irritation.

Eyes

May cause eye irritation.

Ingestion

May cause irritation of the digestive tract. May cause liver damage.

Hazards

Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. May polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.

EC Risk Phrase

R 10 20

EC Safety Phrase

S 23 24/25

UN (DOT)

2302

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.

Respirators

Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Exposure Effects

Prolonged or repeated skin contact may cause dermatitis. Repeated exposure may cause sensitization dermatitis.

Exposure limit(s)

NIOSH REL: TWA 50 ppm (240 mg/m3) OSHA PEL: TWA 100 ppm (475 mg/m3)

Poison Class

4

Fire Fighting Measures

Flash Point

43

Autoignition

455

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Use water spray to keep fire-exposed containers cool. Containers may explode in the heat of a fire. Extinguishing media: Water may be ineffective. In case of fire, use water spray, dry chemical, carbon dioxide, or alcohol-resistant foam.

Upper exp. limit

8.8

Lower exp. limit

1.4

Fire Potential

HIGHLY FLAMMABLE.

Accidental Release Measures

Small spills/leaks

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. A vapor suppressing foam may be used to reduce vapors.

Stability and Reactivity

Disposal Code

1

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents.

Decomposition

Carbon monoxide, carbon dioxide.

Combustion Products

Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

2302

Hazard Class

3

Packing Group

III

HS Code

2914 19 10