1-Ethynylcyclohexanol

  • 1-Ethynyl-1-cyclohexanol
  • 1-Hydroxy-1-ethynylcyclohexane
  • (1-Hydroxycyclohexyl)ethyne
  • (1-Hydroxycyclohexyl)acetylene
Formula
C8H12O
Structure
Description
Solid.

Registry Numbers and Inventories.
CAS
78-27-3
EC (EINECS/ELINCS)
201-100-9
EC Class
harmful
R 21/22 36/37/38
S 26 36/37/39
RTECS
GV9100000
RTECS class
Primary Irritant
UN (DOT)
2811
Beilstein/Gmelin
471404
Beilstein Reference
4-06-00-00348
Swiss Giftliste 1
G-8791
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C8H12O
Formula mass
124.18
Melting point, °C
30 - 32
Boiling point, °C
180
Vapor pressure, mmHg
7.5 (50 C)
Vapor density (air=1)
3.73
Density
0.973 g/cm3 (20 C)
Solubility in water
Slightly soluble
Refractive index
1.4832
pKa/pKb
13.34 (pKa)

Hazards and Protection.
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.
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.
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
No data.
Incompatibilities
Strong acids - strong oxidizing agents - acid chlorides - strong reducing agents - acid anhydrides.
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
73
Autoignition, °C
365
Upper exp. limit, %
8.7
Lower exp. limit, %
1.3
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.
Fire potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Hazards
Contact with metals may evolve flammable hydrogen gas.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Poison_Class
4
Exposure effects
   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.

First aid
 
   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.

Transport.
UN number
2811
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
HS Code
2906 19 00