Product Identification

Product Name

Hexadecanoic acid

Synonyms

1-Pentadecanecarboxylic acid
Cetylic acid
Hexadecanoic acid
Neo-Fat 16
Palmitinic acid
Prifac 2960

CAS

57-10-3

Formula

C16H32O2

Molecular Weight

256.43

EINECS

200-312-9

RTECS

RT4550000

RTECS Class

Tumorigen; Natural Product; Primary Irritant

Merck

12,7128

Beilstein/Gmelin

607489

Beilstein Reference

4-02-00-01157

Physical and Chemical Properties

Appearance

White crystals, scales or flakes or white to yellow-white crystalline solid or powder.

Solubility in water

Insoluble

Melting Point

61 - 63

Boiling Point

352

Vapor Pressure

3E-5 (25 C)

Density

0.853 g/cm3 (20 C)

pKa/pKb

4.78 (pKa)

Partition Coefficient

7.17

Heat Of Vaporization

61.7 kJ/mol

Heat Of Combustion

-10030.6 kJ/mol

Usage

Manufacture of metallic palmitates, soaps, lube oils, waterproofing, food-grade additives.

Saturation Concentration

Very low at 25 C

Refractive Index

1.4281 (70 C)

First Aid Measures

Ingestion

Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.

Inhalation

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.

Skin

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

Eyes

Immediately 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 sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Handling

Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Minimize dust generation and accumulation. Use spark-proof tools and explosion proof equipment. Avoid breathing dust, vapor, mist, or gas. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Hazards Identification

Inhalation

Causes respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.

Skin

Causes skin irritation.

Eyes

Causes eye irritation.

Ingestion

May cause gastrointestinal irritation with nausea, vomiting and diarrhea. The toxicological properties of this substance have not been fully investigated.

EC Risk Phrase

R 36/37/38

EC Safety Phrase

S 26 36

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 minimize contact with skin.

Respirators

A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.

Exposure Effects

The toxicological properties of this material have not been investigated.

Poison Class

-

Fire Fighting Measures

Flash Point

154

Autoignition

377

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. Will burn if involved in a fire. This material in sufficient quantity and reduced particle size is capable of creating a dust explosion. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.

Upper exp. limit

4.9

Lower exp. limit

.5

Accidental Release Measures

Small spills/leaks

Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation. Clean up residual material by washing area with a 2-5% solution of soda ash.

Stability and Reactivity

Disposal Code

4

Incompatibilities

Bases, oxidizing materials, reducing materials.

Stability

Stable under normal temperatures and pressures.

Decomposition

Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Transport Information

HS Code

2915 70 15