CAS 1330-43-4 Sodium Tetraborate, Anhydrous - Materials / Alfa Chemistry

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Sodium Tetraborate, Anhydrous

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Catalog Number

ACM1330434-2

Product Name

Sodium Tetraborate, Anhydrous

Structure

CAS

1330-43-4

Category

Ceramic Materials

Description

DryPowder; DryPowder, PelletsLargeCrystals; Liquid; OtherSolid;Powder or glass-like plates becoming opaque on exposure to air; slowly soluble in water;WHITE CRYSTALS OR CRYSTALLINE POWDER.;COLOURLESS-TO-WHITE HYGROSCOPIC CRYSTALS OR POWDER. TURNS OPAQUE ON EXPOSURE TO AIR.;White to gray, odorless powder.;White to gray, odorless powder. [herbicide] [Note: Becomes opaque on exposure to air.]

IUPAC Name

disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane

Molecular Weight

201.2g/mol

Molecular Formula

Na2B4O7; Na2B4O7?10H₂O;B4O7Na2. 10H₂O;Na2B4O7;Na2*2B2O3;B4Na2O7

Canonical SMILES

B1(OB2OB(OB(O1)O2)[O-])[O-].[Na+].[Na+]

InChI

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

InChI Key

UQGFMSUEHSUPRD-UHFFFAOYSA-N

Boiling Point

1,575 °C (decomposes);2867°F (decomposes);2867°F (Decomposes)

Melting Point

Between 171 °C and 175 °C with decomposition;743 °C;742 °C;1366°F;1366°F

Density

2.367;Relative density (water = 1): 1.7;Relative density (water = 1): 2.4;2.37;2.37

Solubility

Water solubility: 3.1% at 25 °C; 2.5% at 20 °C;Solubility at 25 °C: 16.7% in methanol; 30% in ethylene glycol; 40.6 g/L in formamide;Solubility in water, g/100ml at 20 °C: 5.1;Solubility in water, g/100ml at 20 °C: 2.56;4%

Color/Form

Colorless glassy solid; hygroscopic;Light grey, vitreous granules;White to gray powder; becomes opaque on exposure to air

Complexity

121

Corrosivity

Solutions are not a corrosion hazard to ferrous metals

Covalently-Bonded Unit Count

EC Number

215-540-4;215-540-4;235-541-3

Exact Mass

201.981162g/mol

Formal Charge

Heavy Atom Count

ICSC Number

0567;1229

MeSH Entry Terms

disodium borate, heptahydrate;disodium borate, monohydrate;Komex;monosodium metaborate;sodium borate;sodium borate (NaBO2);sodium diborate;sodium meta borate;sodium metaborate;sodium tetraborate

Monoisotopic Mass

201.981162g/mol

Odor

Odorless

Other Experimental

Heat of formation (glass): -32566 MJ/mol; heat of formation (alpha crystalline form): -3.2767 MJ/mol; heat of solution: -213.8 kJ/kg; heat of fusion: 81.2 kJ/mol;Molar heat capacity: 186.8 J/K mol at 25 °C;White crystals or powder, odorless; density: 1.73 20 °C/4 °C; loses water of crystallization when heated, with melting between 75 and 320 °C; fuses to a glassy mass at red heat (borax glass); effloresces slightly in warm dry air; soluble in water, glycerol; insoluble in alcohol /Sodium tetraborate decahydrate/;White, free-flowing crystals, hygroscopic; forms partial hydrate in damp air; mp: 741 °C; density: 2.367; slightly soluble in cold water /Anhydrous sodium tetraborate/;Hygroscopic

Refractive Index

INDEX OF REFRACTION: 1.5010

Rotatable Bond Count

Stability

.../Becomes/ opaque on exposure to air. /Anhydrous/;Forms partial hydrate in damp air.

UNII

8191EN8ZMD

Vapor Pressure

Negligible at 20 °C;0 mmHg (approx);0 mmHg (approx)

MSDS

Download MSDS

COA