Borax

Frae Wikipedia
Jump to navigation Jump to search
Borax
Borax creestals
Baw-an-stick model o the unit cell o borax decahydrate
Names
IUPAC name
Sodium tetraborate decahydrate
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.014.129
EC Nummer 215-540-4
E nummer E285 (preservatives)
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
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
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).
N verify (whit is YesYN ?)
Infobox references

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

References[eedit | eedit soorce]

  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. 2.0 2.1 2.2 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).