Dicyclohexylphosphine

Formula
C12H23P
Structure

Registry Numbers and Inventories.
CAS
829-84-5
EC (EINECS/ELINCS)
212-590-9
17 23/24/25
17 36/37/39 45
UN (DOT)
2845
Canada DSL/NDSL
NDSL
US TSCA
Listed

Properties.
Formula
C12H23P
Formula mass
198.29
Boiling point, °C
281 - 283
Vapor pressure, mmHg
0.004 (25 C)
Density
0.904 g/cm3 (20 C)
Refractive index
1.516 (20 C)
Heat of vaporization
50.80 kJ/mol

Hazards and Protection.
Storage
Keep tightly closed. Keep away from heat, sparks, and open flame. Handle and store under nitrogen.
Protection
Compatible chemical-resistant gloves. Chemical safety goggles. Protective clothing.
Respirators
Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU). Where risk assessment shows air-purifying respirators are appropriate use a full-face respirator with multi-purpose combination (US) or type ABEK (EN 14387) respirator cartridges as a backup to engineering controls. If the respirator is the sole means of protection, use a full-face supplied air respirator.
Small spills/leaks
Cover with dry-lime, sand, or soda ash. Place in covered containers using non-sparking tools and transport outdoors. Ventilate area and wash spill site after material pickup is complete.
Stability
Pyrophoric material.
Decomposition
Carbon monoxide, Carbon dioxide, Thermal decomposition may produce toxic fumes of phosphorus oxides and/or phosphine.

Fire.
Flash Point,°C
2
Fire fighting
Extinguish with water spray, carbon dioxide, dry chemical powder or appropriate foam. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Fire potential
Catches fire if exposed to air (pyrophoric). Flammable hazard.
Hazards
Emits toxic fumes under fire conditions.
Health
2
 
Flammability
4
 
 
Reactivity
4
 

Health.
Exposure effects
Exposure can cause nausea, headache and vomiting.
   Ingestion
Toxic if swallowed.
   Inhalation
Material may be irritating to mucous membranes and upper respiratory tract. Toxic if inhaled.
   Skin
May cause irritation. Toxic if absorbed throught the skin.
   Eyes
May cause irritation.

First aid
 
   Ingestion
If swallowed, wash out mouth with water provided person is conscious. Call a physician.
   Inhalation
If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.
   Skin
In case of contact, immediately wash skin with soap and copious amounts of water. Remove contaminated clothing and shoes. Call a physician.
   Eyes
In case of contact with eyes, flush with copious amounts of water for at least 15 minutes. Assure adequate flushing by separating the eyelids with fingers. Call a physician.

Transport.
UN number
2845
Response guide
Hazard class
4.2
Packing Group
I