Product Identification

Product Name

1-Ethynylcyclohexanol

Synonyms

(1-Hydroxycyclohexyl)acetylene
(1-Hydroxycyclohexyl)ethyne
1-Ethynyl-1-cyclohexanol
1-Ethynylcyclohexan-1-ol
1-Hydroxy-1-ethynylcyclohexane

CAS

78-27-3

Formula

C8H12O

Molecular Weight

124.18

EINECS

201-100-9

RTECS

GV9100000

RTECS Class

Primary Irritant

Beilstein/Gmelin

471404

Beilstein Reference

4-06-00-00348

EC Class

harmful

Physical and Chemical Properties

Appearance

Solid.

Solubility in water

Slightly soluble

Melting Point

30 - 32

Boiling Point

180

Vapor Pressure

7.5 (50 C)

Density

0.973 g/cm3 (20 C)

pKa/pKb

13.34 (pKa)

Vapor Density

3.73

Refractive Index

1.4832

First Aid Measures

Ingestion

Never give anything by mouth to an unconscious person. Get medical aid. Wash mouth out with water.

Inhalation

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

Skin

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

Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Do not breathe dust, vapor, mist, or gas. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Do not ingest or inhale.

Hazards Identification

Ingestion

Causes gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed.

Inhalation

Causes respiratory tract irritation. May cause narcotic effects in high concentration.

Skin

May cause skin irritation. May be harmful if absorbed through the skin.

Eyes

Causes eye irritation.

Hazards

Contact with metals may evolve flammable hydrogen gas.

EC Risk Phrase

R 21/22 36/37/38

EC Safety Phrase

S 26 36/37/39

UN (DOT)

2811

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.

Poison Class

4

Fire Fighting Measures

Flash Point

73

Autoignition

365

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Will burn if involved in a fire. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.

Upper exp. limit

8.7

Lower exp. limit

1.3

Fire Potential

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.

Accidental Release Measures

Small spills/leaks

Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Stability

No data.

Incompatibilities

Strong acids - strong oxidizing agents - acid chlorides - strong reducing agents - acid anhydrides.

Decomposition

Carbon monoxide, carbon dioxide.

Combustion Products

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

Transport Information

UN Number

2811

Hazard Class

6.1

Packing Group

I; II; III

HS Code

2906 19 00