White phosphorus

  • Yellow phosphorous
  • Yellow phosphorus, molten
Formula P
Structure
Description Yellow to white lumps.
Uses Primary used in in the production of phosphorous based compounds.

Registry Numbers and Inventories.
CAS 7723-14-0
EC (EINECS/ELINCS) 231-768-7
EC Index Number 015-002-00-7
EC Class Highly flammable; Explosive when mixed with oxidizing substances; Dangerous for the Environment
EC Risk Phrase R 11 26 28 35 41
EC Safety Phrase S 7 43 61
RTECS TH3500000
RTECS class Agricultural Chemical and Pesticide; Reproductive Effector; Human Data
UN (DOT) 1381
Merck 12,7503
Beilstein/Gmelin 16235 (G)
RCRA D003
EPA OPP 66502
Swiss Giftliste 1 G-2740
Canada DSL/NDSL DSL
US TSCA Listed
Austrailia AICS Listed
New Zealand Listed
Korea ECL Listed

Odor Threshold Odor threshold Odorless
Properties.
Formula P
Formula mass 30.97
Melting point, °C 44
Boiling point, °C 553
Vapor pressure, mmHg 0.17 (44 C)
Vapor density (air=1) 4.77
Critical temperature 721
Density 2.69 g/cm3 (20 C)
Solubility in water 0.3 mg/L (20 C)
Viscosity 1.69 cp (50 C)
Surface tension 106 erg/cm2
Heat of fusion 6.2 kJ/mol
Heat of vaporization 49.8 kJ/mol

Hazards and Protection.
Storage Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area. Store protected from light.
WHMIS B4 D1A E
Handling Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Store protected from light. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
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 Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. Cover with sand and place into a closed container for disposal. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation.
Disposal code 25
Stability Stable under normal temperatures and pressures.
Incompatibilities White and yellow phosphorus reacts explosively with a large number of compounds and elements. Please refer to NFPA 's Fire Protection guide to Hazardous Materials for details. May explode on contact with oxidizing materials. Produces acrid fumes in air. Can be ignited by friction, static electric discharge, heating and mixing with strong oxidizing agents. Reacts with halogens, halides, sulfur and oxidizing materials.
Decomposition Phosphine, oxides of phosphorus, irritating and toxic fumes and gases.

Fire.
Flash Point,°C 30
Autoignition, °C 300
Fire fighting Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Containers may explode in the heat of a fire. This material is readily combustible and may ignite if exposed to friction. Flammable solid. May re-ignite after fire is extinguished. Extinguishing media: For small fires, use dry chemical, sand, water spray, or foam. For large fires, use water spray, fog or regular foam. Cool containers with flooding quantities of water until well after fire is out.
Fire potential Extremely flammable; will ignite itself if exposed to air.
Hazards Burns rapidly, releasing dense, white, irritating fumes. Substance may be transported in a molten form. May re-ignite after fire is extinguished.
NFPA Health 4
  Flammability 4  
  Reactivity 2  

Health.
Exposure limit(s) OSHA PEL: TWA 0.1 mg/m3 NIOSH REL: TWA 0.1 mg/m3 NIOSH IDLH: 5 mg/m3
Poison_Class 1
Exposure effects Prolonged or repeated skin contact may cause dermatitis. May cause liver and kidney damage. Chronic exposure can lead to necrosis of the jaw, or 'phossy-jaw'.
   Ingestion May be fatal if swallowed. May cause irritation of the digestive tract. May cause liver and kidney damage.
   Inhalation May cause severe burns.. Very toxic.
   Skin May cause skin irritation. Prolonged and/or repeated contact may cause irritation and/or dermatitis.
   Eyes May cause eye irritation. May result in corneal injury.

First aid
 
   Ingestion 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 Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin Get medical aid. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. 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 immediately.

Transport.
UN number 1381
Response guide 136
Hazard class 4.2
Packing Group I  
USCG CHRIS Code PPW  
USCG Compatatibility Group 0 Unassigned.
HS Code 2804 70 00  
Std. Transport # 4916172