Product Identification

Product Name

1-Butanecarboxylic acid

Synonyms

Pentanoic acid

CAS

109-52-4

Formula

C5H10O2

Molecular Weight

102.13

EINECS

203-677-2

RTECS

YV6100000

RTECS Class

Reproductive Effector

Merck

12,10042

Beilstein/Gmelin

969454

Beilstein Reference

4-02-00-00868

EC Index Number

607-143-00-3

EC Class

Corrosive; Dangerous for the Environment

Physical and Chemical Properties

Appearance

Clear, colorless liquid, with a characteristic, unpleasant odor, similar to butyric acid.

Solubility in water

20 g/L

Melting Point

-32

Boiling Point

186

Vapor Pressure

0.45 (25 C)

Density

1.11 g/cm3

pKa/pKb

4.84 (pKa)

Partition Coefficient

1.39

Heat Of Vaporization

44.6 kJ/mol

Heat Of Combustion

-2837.8 kJ/mole

Usage

Intermediate for flavors and perfumes, ester-type lubricants, plasticizers, pharmaceuticals, vinyl stabilizers.

Vapor Density

3.52

Saturation Concentration

Approximately 200 ppm (0.02%) at 20 C (calculated)

Refractive Index

1.40781 (15 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 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. DO NOT use mouth-to-mouth respiration.

Skin

Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Discard contaminated clothing in a manner which limits further exposure.

Eyes

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

Handling

Wash thoroughly after handling. Wash hands before eating. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. Use with adequate ventilation.

Hazards Identification

Inhalation

Irritation may lead to chemical pneumonitis and pulmonary edema. Causes severe irritation of upper respiratory tract with coughing, burns, breathing difficulty, and possible coma.

Skin

May cause severe irritation and possible burns.

Eyes

Contact with eyes may cause severe irritation, and possible eye burns. May cause eye injury.

Ingestion

May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns. Causes severe pain, nausea, vomiting, diarrhea, and shock.

Hazards

When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.

EC Risk Phrase

R 34 52/53

EC Safety Phrase

S 26 36 45 61

UN (DOT)

3265

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 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.

Poison Class

4

Fire Fighting Measures

Flash Point

86

Autoignition

360

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. Containers may explode in the heat of a fire. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Water spray may cause frothing. Cool containers with flooding quantities of water until well after fire is out.

Upper exp. limit

7.3

Lower exp. limit

1.8

Fire Potential

Combustible material: may burn but does not ignite readily.

Accidental Release Measures

Small spills/leaks

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Neutralize spill with a weak acid such as vinegar or acetic acid. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Provide ventilation.

Stability and Reactivity

Disposal Code

4

Incompatibilities

Ammonia, alkylene oxides, amines, caustics (e.g. ammonia, ammonium hydrozide, calcium hydroxide, potassium hydroxide, sodium hydroxide), epichlorohydrin, isocyanates, strong bases, sulfuric acid.

Stability

Stable under normal temperatures and pressures.

Decomposition

Carbon monoxide, carbon dioxide, acrid smoke and fumes.

Combustion Products

Irritating vapors and toxic gases, such as carbon dioxide and carbon monoxide, may be formed when involved in fire.

Transport Information

UN Number

3265

Hazard Class

8

Packing Group

I; II; III

HS Code

2915 60 90