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1.06308

di-Sodium tetraborate decahydrate

Name: di-Sodium tetraborate decahydrate
Brand: MM

for analysis ACS,ISO,Reag. Ph Eur

Synonym(s):

di-Sodium tetraborate decahydrate, Borax, Sodium biborate decahydrate, Sodium borate decahydrate

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About This Item

Empirical Formula (Hill Notation):

B₄Na₂O₇ · 10H₂O

CAS Number:

1303-96-4

Molecular Weight:

381.37

UNSPSC Code:

12352302

EC Index Number:

215-540-4

NACRES:

NB.21

MDL number:

MFCD00149193

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Properties

grade

ACS reagent

Quality Level

100

agency

reag. ISO, reag. Ph. Eur.

vapor pressure

0.213 hPa ( 20 °C)

assay

99.5-103.0% (acidimetric)

form

crystals

potency

2660 mg/kg LD₅₀, oral (Rat), >2000 mg/kg LD₅₀, skin (Rabbit)

pH

9.2 (20 °C, 47 g/L in H₂O)

mp

75 °C (Elimination of water of crystallisation)

solubility

49.74 g/L

density

1.72 g/cm³ at 20 °C

bulk density

750 kg/m³

storage temp.

2-30°C

SMILES string

[Na+].[Na+].B([O-])(OB([O-])OB=O)OB=O.O.O.O.O.O.O.O.O.O.O

InChI

1S/B4O7.2Na.10H2O/c5-1-9-3(7)11-4(8)10-2-6;;;;;;;;;;;;/h;;;10*1H2/q-2;2*+1;;;;;;;;;;

InChI key

OJPFLODMGUZMKD-UHFFFAOYSA-N

Description

Application

Inhibition of boric acid and sodium borate on the biological activity of microorganisms in an aerobic biofilter.: This research examines the effects of di-sodium tetraborate decahydrate on the biological activity of microorganisms in an aerobic biofilter. The study finds that di-sodium tetraborate decahydrate can inhibit microbial activity, which has significant implications for waste treatment and environmental management. This inhibition property can be utilized to control microbial populations in various industrial processes, enhancing the efficiency and effectiveness of biofiltration systems (Gunes, 2013).

Analysis Note

Assay (acidimetric): 99.5 - 103.0 %
Identity: passes test
Appearance of solution: passes test
Insoluble matter: ≤ 0.005 %
pH-value (0.01 M Solution, 25 °C): 9.15 - 9.20
pH-value (4 %, water): 9.0 - 9.6
Chloride (Cl): ≤ 0.0007 %
Phosphate (PO₄): ≤ 0.001 %
Sulfate (SO₄): ≤ 0.005 %
Heavy metals (as Pb): ≤ 0.001 %
As (Arsenic): ≤ 0.0005 %
Ca (Calcium): ≤ 0.005 %
Cu (Copper): ≤ 0.0005 %
Fe (Iron): ≤ 0.0005 %
NH₄ (Ammonium): ≤ 0.001 %
Pb (Lead): ≤ 0.0005 %
Corresponds to ACS,ISO,Reag. Ph Eur

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pictograms

GHS07,GHS08

signalword

Danger

hcodes

H319 - H360FD

pcodes

P202 - P264 - P280 - P305 + P351 + P338 - P308 + P313 - P337 + P313

Hazard Classifications

Eye Irrit. 2 - Repr. 1B

Storage Class

6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c