SODIUM TETRABORATE DECAHYDRATE
| Chemical Identification | |
|---|---|
| CAS # | 1303-96-4 |
| Formula |
Na₂B₄O₇=₁₀H₂O |
| Synonyms |
borax; borax decahydrate; sodium borate decahydrate; sodium tetraborate decahydrate |
| Physical Properties | |||
|---|---|---|---|
| Physical description | White, odorless, crystalline solid. | ||
| Boiling point | 608°F | Molecular weight | 381.4 |
| Freezing point/melting point | 167°F | Vapor pressure | 0 mmHg (approx) |
| Flash point | Vapor density | ||
| Specific gravity | 1.73 | Ionization potential | |
| Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
| NFPA health rating | NFPA fire rating | ||
| NFPA reactivity rating | NFPA special instruction | ||
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Monitoring Methods Used by OSHA | ||||||
|---|---|---|---|---|---|---|
| Analyte code (IMIS no.) | 0375 | |||||
| Sampling group | ||||||
| Sampler/Sampling media | Pre-assembled cassette with mixed cellulose ester filter (MCEF) 0.8 micron (37 mm) [MAWP037A0] | |||||
| Sampling time* | 240-480 min |
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| Sampling volume (TWA)* | 480-960 L |
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| Sampling flow rate (TWA)* | 2 L/min |
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| Sampling volume (STEL/Peak/C)* | ||||||
| Sampling flow rate (STEL/Peak/C)* | ||||||
| Analytical method instruments | AAS/AES | |||||
| Method reference | OSHA ID-121 (fully validated) | |||||
| Notes | Results will be reported from the elemental analysis for the element only; the stated identity of the actual sample contents is based on the assumption that the material sampled is as identified by the compliance officer using available documentation of materials and processes. An elemental result provided may be converted to the desired compound by multiplying the result by the appropriate stoichiometric factor. A 91B report specific to the compound (including the stoichiometric conversion) may by be provided upon request by contacting the laboratory. The stoichiometric factor for sodium tetraborate, decahydrate from sodium is 8.294. |
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| Special requirements | ||||||
* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.
| Wipe Method | |
|---|---|
| Sampler/Sampling media | Wipe with Whatman smear tab. [WHA1450993] |
| Bulk Method |
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| On-Site Screening Techniques | ||||||
|---|---|---|---|---|---|---|
| Device | ||||||
| Model/Type | ||||||
|
Sampling information (see manufacturer instructions) |
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| Exposure Limits | |||||||
|---|---|---|---|---|---|---|---|
|
OSHA PEL
8-hour TWA (ST) STEL (C) Ceiling Peak |
NIOSH REL
Up to 10-hour TWA (ST) STEL (C) Ceiling |
ACGIH TLV©
8-hour TWA (ST) STEL (C) Ceiling |
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| PEL-TWA | REL-TWA |
1 mg/m³ |
TLV-TWA |
2 mg/m³ (inhalable particulate matter) [2004] |
PEL-TWA |
5 mg/m³ |
|
| PEL-STEL | REL-STEL | TLV-STEL |
6 mg/m³ (inhalable particulate matter) [2004] |
PEL-STEL | |||
| PEL-C | REL-C | TLV-C | PEL-C | ||||
| Skin notation |
NA |
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
|
Notes:
Not established |
Notes: | Notes: | Notes: | ||||
| Health factors: See NIH-NLM PubChem. | IDLH | ||||||
| Carcinogenic classifications: | Notes: | ||||||
| AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: | |||||||
| Additional Resources and Literature References |
|---|
|
NOAA: CAMEO Chemicals - See also, Sodium peroxoborate, anhydrous NIOSH: Pocket Guide to Chemical Hazards - See also, Sodium peroxoborate, anhydrous Literature References
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Last Updated Date : 01/12/2021