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Borates, tetra, sodium salts (Decahydrate)

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Synonyms & Trade Names
Borax, Borax decahydrate, Sodium borate decahydrate, Sodium tetraborate decahydrate
CAS No.
1303-96-4
RTECS No.
VZ2275000
DOT ID & Guide
Formula
Na₂B₄O₇ • 10H₂O
Conversion
IDLH
N.D.
See: IDLH INDEX
Exposure Limits
NIOSH REL
TWA 5 mg/m3
OSHA PEL
none See Appendix G
Measurement Methods
NIOSH 0500;
OSHA ID125G
See: NMAM or OSHA Methods
Physical Description
White, odorless, crystalline solid. [herbicide] [Note: Becomes anhydrous at 608°F.]
Molecular Weight
381.4
Boiling Point
608°F
Melting Point
167°F
Solubility
6%
Vapor Pressure
0 mmHg (approx)
Ionization Potential
NA
Specific Gravity
1.73
Flash Point
NA
Upper Explosive Limit
NA
Lower Explosive Limit
NA
Noncombustible Solid (an inherent fire retardant).
Incompatibilities & Reactivities
Zirconium, strong acids, metallic salts
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, upper respiratory system; dermatitis; epistaxis (nosebleed); cough, dyspnea (breathing difficulty)
Target Organs
Eyes, skin, respiratory system
Personal Protection/Sanitation
(See protection codes)
Skin:No recommendation
Eyes:No recommendation
Wash skin:Daily
Remove:No recommendation
Change:Daily
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Soap wash
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

Not available.

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0567
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health