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Phosphorus (yellow)

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Synonyms & Trade Names
Elemental phosphorus, White phosphorus
CAS No.
7723-14-0
RTECS No.
TH3500000
DOT ID & Guide
1381 136
Formula
P₄
Conversion
IDLH
5 mg/m3
See: 7723140
Exposure Limits
NIOSH REL
TWA 0.1 mg/m3
OSHA PEL
TWA 0.1 mg/m3
Measurement Methods
NIOSH 7905
See: NMAM or OSHA Methods
Physical Description
White to yellow, soft, waxy solid with acrid fumes in air. [Note: Usually shipped or stored in water.]
Molecular Weight
124.0
Boiling Point
536°F
Melting Point
111°F
Solubility
0.0003%
Vapor Pressure
0.03 mmHg
Ionization Potential
?
Specific Gravity
1.82
Flash Point
?
Upper Explosive Limit
?
Lower Explosive Limit
?
Flammable Solid
Incompatibilities & Reactivities
Air, oxidizers (including elemental sulfur & strong caustics), halogens [Note: Ignites SPONTANEOUSLY in moist air.]
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
irritation eyes, resp tract; eye, skin burns; abdominal pain, nausea, jaundice; anemia; cachexia; dental pain, salivation, jaw pain, swelling
Target Organs
Eyes, skin, respiratory system, liver, kidneys, jaw, teeth, blood
Personal Protection/Sanitation
(See protection codes)
Skin:Prevent skin contact* [*Note: Flame retardant personal protective equipment should be provided.]
Eyes:Prevent eye contact
Wash skin:When contaminated
Remove:When wet or contaminated
Change:Daily
Provide:Eyewash, Quick drench
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Water flush immediately
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

NIOSH/OSHA

Up to 1 mg/m3:
(APF = 10) Any supplied-air respirator

Up to 2.5 mg/m3:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode£

Up to 5 mg/m3:
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece

Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus

Escape:
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0628   MEDICAL TESTS: 0188
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health