Phosphorus, white, molten

  • White phosphorus, molten
  • Yellow phosphorus, molten
Formula
P
Structure
Description
A white or yellow colored semi-liquid. Transported at high temperatures.

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
R 11 16 50
S 7 43 61
RTECS
TH3500000
RTECS class
Agricultural Chemical and Pesticide; Reproductive Effector; Human Data
UN (DOT)
2447
Merck
12,7503
Beilstein/Gmelin
8863 (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

Properties.
Formula
P
Formula mass
30.97
Melting point, °C
590
Boiling point, °C
345 - 360
Vapor pressure, mmHg
0.03 (25 C)
Vapor density (air=1)
4.77
Odor Threshold Odor threshold Odorless
Critical temperature
721
Density
1.82 g/cm3 (20 C)
Solubility in water
0.3 mg/L
Viscosity
1.69 cp at 50C
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.
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
Red, 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
Slightly flammable. Combustion requires preheating. Moderate hazard.
Hazards
Extremely flammable; will ignite itself if exposed to air. Burns rapidly, releasing dense, white, irritating fumes. Substance may be transported in a molten form. May re-ignite after fire is extinguished.
Combustion products
Red: Burning yields toxic oxides of phosphorus.
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
Carcinogin
I-1
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 respiratory tract irritation.
   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
2447
Response guide
Hazard class
4.2
USCG CHRIS Code
PPW
 
HS Code
2804 70 00
 
Std. Transport #
4916172