Product Identification

Product Name

Acetdimethylamide

Synonyms

Acetdimethylamide
Acetic acid dimethylamide
DMAC
N,N-Dimethylacetamide

CAS

127-19-5

Formula

C4H9NO

Molecular Weight

87.12

EINECS

204-826-4

RTECS

AB7700000

RTECS Class

Drug; Mutagen; Reproductive Effector; Primary Irritant

Merck

13,3254

Beilstein/Gmelin

1737614

Beilstein Reference

4-04-00-00180

EC Index Number

616-011-00-4

EC Class

Toxic for reproduction Category 2; Harmful

Physical and Chemical Properties

Appearance

Colorless liquid, weak ammonia or fish-like odor.

Solubility in water

Miscible

Melting Point

-20

Boiling Point

166.1

Vapor Pressure

10 (25 C)

Density

0.937 g/cm3 (20 C)

Partition Coefficient

-.77

Heat Of Vaporization

49.7 kJ/mol

Heat Of Combustion

-2540 kJ/mol

Usage

Solvent in industrial applications.

Saturation Concentration

2600 ppm (0.26%) at 25 C (calculated)

Vapor Density

3

Odor threshold

20 ppm

Refractive Index

1.4373 (20 C)

First Aid Measures

Ingestion

Do NOT induce vomiting. 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.

Inhalation

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

Skin

Get medical aid. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.

Eyes

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

Handling and Storage

Storage

Keep away from heat, sparks, and flame. Keep away from sources of ignition. Do not store in direct sunlight. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. 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

Causes respiratory tract irritation. May cause effects similar to those described for ingestion. Aspiration may lead to pulmonary edema. Inhalation at high concentrations may cause CNS depression and asphixiation.

Skin

Causes skin irritation. May be absorbed through the skin. If absorbed, causes symptoms similar to those of ingestion. May cause cyanosis of the extremities.

Eyes

Causes eye irritation. May cause chemical conjunctivitis and corneal damage.

Ingestion

May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause liver damage. May cause central nervous system depression, characterized by excitement, followed by headache, dizziness, drowsiness, and nausea. Advanced stages may cause collapse, unconsciousness, coma and possible death due to respiratory failure. May cause auditory and visual hallucinations, disorientation, sweating, and

EC Risk Phrase

R 61 20/21

EC Safety Phrase

S 53 45

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

Chronic ingestion may cause liver damage. May cause reproductive and fetal effects.

Exposure limit(s)

OSHA PEL: TWA 10 ppm (35 mg/m3) skin NIOSH REL: TWA 10 ppm (35 mg/m3) skin NIOSH IDLH: 300 ppm

Poison Class

3

Fire Fighting Measures

Flash Point

70

Autoignition

354

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use water spray to keep fire-exposed containers cool. Combustible Liquid. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Use foam, dry chemical, or carbon dioxide.

Upper exp. limit

11.5

Lower exp. limit

1.7

Fire Potential

This chemical is combustible.

Accidental Release Measures

Small spills/leaks

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation.

Stability and Reactivity

Disposal Code

1

Incompatibilities

Ammonia, nonoxidizing mineral acids, strong acids, phenols, isocyanates, cresol, halogens, coatings, plastics, rubber, iron.

Stability

Stable under normal temperatures and pressures.

Decomposition

Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Transport Information

HS Code

2924 19 00