CAS 7757-82-6 Sodium Sulfate Anhydrous - Materials / Alfa Chemistry

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Sodium Sulfate Anhydrous

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Catalog Number

ACM7757826-1

Product Name

Sodium Sulfate Anhydrous

Structure

CAS

7757-82-6

Category

Ceramic Materials

Description

Liquid;DryPowder; DryPowder, Liquid; DryPowder, OtherSolid; DryPowder, PelletsLargeCrystals, Liquid; Liquid; OtherSolid; OtherSolid, Liquid; PelletsLargeCrystals; WetSolid; WetSolid, Liquid;Colourless crystals or a fine, white, crystalline powder; The decahydrate is efflorescent;WHITE HYGROSCOPIC SOLID IN VARIOUS FORMS.

IUPAC Name

disodium;sulfate

Molecular Weight

142.04g/mol

Molecular Formula

Na2SO4? nH₂O (n = 0 or 10);Na2SO4;Na2SO4;Na2O4S

Canonical SMILES

[O-]S(=O)(=O)[O-].[Na+].[Na+]

InChI

InChI=1S/2Na.H₂O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2

InChI Key

PMZURENOXWZQFD-UHFFFAOYSA-L

Melting Point

884 °C;884 °C

Density

2.671;Relative density (water = 1): 2.7

Solubility

In water, 28.1 g/100 g water at 25 °C;In water, 445.47 g/L at 20 °C and pH 5.23 (shake flask method);Soluble in about 3.6 parts water; 1 in 2 parts water is maximum solubility at 33 °C; at 100 °C it requires 2.4 parts water;Soluble in glycerin; insoluble in alcohol;SOL IN HYDROGEN IODIDE;Solubility in water: very good

Color/Form

Powder or orthorhombic bipyramidal crystals;White orthorhombic crystals or powder

Complexity

62.2

Corrosivity

The rates of corrosion of iron and steel in water are a function of the specific mineral quality as well as the alkalinity and pH values. Sodium sulfate ... is a strong contributor to the rate of corrosion. For example, in water with 400 mg/l of alkalinity (as CaCO3) at pH 7, the corrosion rate will be zero at 200 mg/l of Na2SO4, but when the concentration of sodium sulfate is 400 mg/l, the corrosion rate will be about 100 mg per square cm per day.

Covalently-Bonded Unit Count

EC Number

231-820-9;268-366-6;268-773-9;270-211-2

Exact Mass

141.931268g/mol

Formal Charge

Heavy Atom Count

ICSC Number

0952

Log P

log Kow = -4.38 (est)

MeSH Entry Terms

disodium sulfate;mangxiao;mirabilitum;natrii sulphas;puxiao;sodium bisulfate;sodium bisulfate, monohydrate;sodium hydrosulfate;sodium sulfate;sodium sulfate, 35S-labeled cpd;sodium sulfate, decahydrate;sulfuric acid, monosodium salt;thenardite

Monoisotopic Mass

141.931268g/mol

Odor

Odorless

Other Experimental

Transition point to anhydrous form is 24.4 °C; white, rhombic or tetragonal; 19.5 g/100 cc water at 0 °C, 44 g/100 cc water at 20 °C/Sodium sulfate heptahydrate/;Density: 1.46; loses all its water at 100 °C; efflorescent crystals or granules; odorless; aqueous solution is neutral; pH 6 to 7.5; soluble in 1.5 parts water at 25 °C, in 3.3 parts water at 15 °C (solubility in water decreased by sodium chloride); soluble in glycerol; insoluble in alcohol /Sodium sulfate decahydrate/;Transparent, monoclinic crystals; mp: 32.38 °C; index of refraction: 1.394, 1.396, 1.398 /Sodium sulfate decahydrate/;Objectionable taste /Sodium sulfate decahydrate/;4.76 g/100 cc water at 0 °C, 42.7 g/100 cc water at 100 °C; soluble in glycerol; insoluble in alcohol; index of refraction: 1.484, 1.477, 1.471 /Natural thenardite/;Latent heat of fusion: 24.4 kJ at melting point;Heat of formation: -1385 Kj/mole;Entropy: 149.6 J/(mole x K);Heat of solution: 1.17 kJ/mole

Refractive Index

Index of refraction: 1.464

Rotatable Bond Count

RTECS Number

WE1650000

Stability

Stable under recommended storage conditions.

UNII

36KCS0R750

Viscosity

2.48 (22% solution at 20 °C)

MSDS