Borates, tetra, sodium salts (Pentahydrate)
Synonyms & Trade Names Borax pentahydrate, Sodium borate pentahydrate, Sodium tetraborate pentahydrate
CAS No. 12179-04-3		RTECS No. VZ2540000		DOT ID & Guide
Formula Na₂B₄O₇ • 5H₂O		Conversion		IDLH N.D. See: IDLH INDEX
Exposure Limits NIOSH REL : TWA 1 mg/m³ OSHA PEL †: none				Measurement Methods NIOSH ID125G
Physical Description Colorless or white, odorless crystals or free-flowing powder. [herbicide] [Note: Begins to lose water of hydration at 252°F.]
MW: 291.4	BP: ?	MLT: 392°F	Sol: 3%	VP: 0 mmHg (approx)	IP: NA
Sp.Gr: 1.82	Fl.P: NA	UEL: NA	LEL: NA
Noncombustible Solid
Incompatibilities & Reactivities None reported [Note: See the reactivities & incompatibilities reported for the related substance Borax decahydrate above.]
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

Borates, tetra, sodium salts (Pentahydrate)