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| Borates, tetra, sodium salts (Pentahydrate) | CAS 12179-04-3 | ||
| Na2B4O7 • 5H2O | RTECS | ||
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Synonyms & Trade Names Borax pentahydrate, Sodium borate pentahydrate, Sodium tetraborate pentahydrate |
DOT ID & Guide |
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Exposure Limits |
NIOSH REL: TWA 1 mg/m3 | ||
| OSHA PEL†: none | |||
| IDLH N.D. | Conversion | ||
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Physical Description Colorless or white, odorless crystals or free-flowing powder. [herbicide] [Note: Begins to lose water of hydration at 252°F.] |
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MW: 291.4 |
BP: ? |
MLT: 392°F |
Sol: 3% |
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VP: 0 mmHg (approx) |
IP: NA |
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Sp.Gr: 1.82 |
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Fl.P: NA |
UEL: NA |
LEL: NA |
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| Noncombustible Solid | |||
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Incompatibilities & Reactivities None reported [However, see the reactivities & incompatibilities reported for the related substance Borax decahydrate above.] |
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Measurement Methods NIOSH 0500; OSHA ID125G |
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Personal Protection & Sanitation 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 To be added later | |
| Exposure Routes inhalation, ingestion, skin and/or eye contact | |
| Symptoms Irritation eyes, skin, upper respiratory system; dermatitis; epistaxis (nosebleed); cough, dyspnea (breathing difficulty) | |
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Target Organs
Eyes, skin, respiratory system |
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| See also: INTRODUCTION |