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Borax
Borax creestals
Baw-an-stick model o the unit cell o borax decahydrate
Names
IUPAC name
Sodium tetraborate decahydrate
Identifiers
CAS Nummer
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
EC Nummer 215-540-4
KEGG
UNII
Properties
Na2B4O7·10H2O or Na2[B4O5(OH)4]·8H2O
Molar mass 381.38 (decahydrate)
201.22 (anhydrate)
Appearance white solit
Density 1.73 g/cm3 (solid)
Meltin pynt 743 °C (1,369 °F; 1,016 K) anhydrate[1]
Bylin pynt 1,575 °C (2,867 °F; 1,848 K)
Magnetic susceptibility −85.0·10−6 cm3/mol
Structur
Monoclinic Prismatic
Space group C2/c
Pynt group 2/m
Pharmacology
ATC code
 S01AX07 (WHO)
Hazards
GHS pictograms The health hazard pictogram in the Globally Harmonized Seestem o Classification an Labellin of Chemicals (GHS)
GHS hazard statements H360
GHS precautionary statements P201, P308+313
NFPA 704
NFPA 704 four-colored diamondFlammability code 0: Will nae burn. E.g., watterHealth code 1: Exposur would cause irritation but anly minor residual injury. E.g., turpentineReactivity code 0: Normally stable, even unner fire exposur condeetions, an is nae reactive wi watter. E.g., liquid nitrogenSpecial hazards (white): no code
0
1
0
US heal exposur leemits (NIOSH):
PEL (Permissible)
 none[2]
REL (Recommendit)
 TWA 1 mg/m3 (anhydrate an pentahydrate)[2][3]
TWA 5 mg/m3 (decahydrate)[4]
IDLH (Immediate danger)
 N.D.[2]
Relatit compoonds
Ither anions
 Sodium aluminate; sodium gallate
Ither cations
 Potassium tetraborate
Relatit compoonds
 Boric acid, sodium perborate
Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Borax, kent as sodium borate, sodium tetraborate, or disodium tetraborate an aw, is an important boron compoond, a meeneral, an a saut o boric acid.

References

  1. ↑ Lide, D. R., ed. (2005). CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press. p. 88. ISBN 0-8493-0486-5.
  2. ↑ a b c NIOSH Pocket Guide tae Chemical Hazards 0057
  3. ↑ NIOSH Pocket Guide tae Chemical Hazards 0059
  4. ↑ NIOSH Pocket Guide tae Chemical Hazards 0058
  5. ↑ "Potential Commodities NFPA 704" (PDF). Archived frae the original (PDF) on 17 Mey 2016. Retrieved 18 Mairch 2018.
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