NIOSH logo and tagline

Hydrogen peroxide

Related Pages
Synonyms & Trade Names
High-strength hydrogen peroxide, Hydrogen dioxide, Hydrogen peroxide (aqueous), Hydroperoxide, Peroxide
CAS No.
7722-84-1
RTECS No.
MX0900000
DOT ID & Guide
2984 140(8-20% solution)
2014 140(20-60% solution)
2015 143(>60% solution)
Formula
H₂O₂
Conversion
1 ppm = 1.39 mg/m3
IDLH
75 ppm
See: 772841
Exposure Limits
NIOSH REL
TWA 1 ppm (1.4 mg/m3)
OSHA PEL
TWA 1 ppm (1.4 mg/m3)
Measurement Methods
OSHA ID126SG
See: NMAM or OSHA Methods
Physical Description
Colorless liquid with a slightly sharp odor. [Note: The pure compound is a crystalline solid below 12°F. Often used in an aqueous solution.]
Molecular Weight
34.0
Boiling Point
286°F
Freezing Point
12°F
Solubility
Miscible
Vapor Pressure
(86°F): 5 mmHg
Ionization Potential
10.54 eV
Specific Gravity
1.39
Flash Point
NA
Upper Explosive Limit
NA
Lower Explosive Limit
NA
Noncombustible Liquid, but a powerful oxidizer.
Incompatibilities & Reactivities
Oxidizable materials, iron, copper, brass, bronze, chromium, zinc, lead, silver, manganese. [Note: Contact with combustible material may result in SPONTANEOUS combustion.]
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
irritation eyes, nose, throat; corneal ulcer; erythema (skin redness), vesiculation skin; bleaching hair
Target Organs
Eyes, skin, respiratory system
Personal Protection/Sanitation
(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated
Remove:When wet or contaminated
Change:No recommendation
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 10 ppm:
(APF = 10) Any supplied-air respirator*

Up to 25 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode*

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

Up to 75 ppm:
(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
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

See also
INTRODUCTION
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health