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p-Phenylene diamine

Synonyms & Trade Names
4-Aminoaniline, 1,4-Benzenediamine, 1,4-Diaminobenzene, p-Diaminobenzene, 1,4-Phenylene diamine
CAS No.
106-50-3
RTECS No.
SS8050000
DOT ID & Guide
1673 153
Formula
C₆H₄(NH₂)₂
Conversion
IDLH
25 mg/m3
See: 106503
Exposure Limits
NIOSH REL
TWA 0.1 mg/m3 [skin]
OSHA PEL
TWA 0.1 mg/m3 [skin]
Measurement Methods
OSHA 87
See: NMAM or OSHA Methods
Physical Description
White to slightly red, crystalline solid.
Molecular Weight
108.2
Boiling Point
513°F
Melting Point
295°F
Solubility
(75°F): 4%
Vapor Pressure
<1 mmHg
Ionization Potential
6.89 eV
Specific Gravity
?
Flash Point
312°F
Upper Exposive Limit
?
Lower Explosive Limit
?
Combustible Solid
Incompatibilities & Reactivities
Strong oxidizers
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
irritation pharynx, larynx; bronchial asthma; sensitization dermatitis
Target Organs
respiratory system, skin
Personal Protection/Sanitation
(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated/Daily
Remove:When wet or contaminated
Change:Daily
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Soap wash promptly
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

NIOSH/OSHA

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

Up to 25 mg/m3:
(APF = 2000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode

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:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern and having an N100, R100, or P100 filter.
Click here for information on selection of N, R, or P filters.
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0805

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