无水硫酸钠

Description

Sodium sulphate decahydrate · CAS 13759-07-4 · Na2SO4. UNII 36KCS0R750. Melting Point: 884 °C; Melting Point: 888 °C; Density: 2.671.

Identification

CAS Registry Number	13759-07-4
PubChem CID	24436
Molecular formula	Na2SO4
IUPAC name	disodium;sulfate
UNII (FDA)	36KCS0R750

Computed Descriptors

Molecular Weight	142.04
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	0
Exact Mass	141.93126821
Monoisotopic Mass	141.93126821
Topological Polar Surface Area	88.6
Heavy Atom Count	7
Formal Charge	0
Complexity	62.2

Physical & Chemical Properties

Melting Point	884 °C
Melting Point	888 °C
Density	2.671
Density	2.671 @25 °C
Viscosity	2.48 (22% solution at 20 °C)

Physical description & handling notes

• Large Crystals; CBI; Dry Powder; Wet Solid; Dry Powder; Gas Vapor; Wet Solid; Other Solid; Dry Powder; Large Crystals; Liquid; Liquid; Dry Powder; Liquid; Liquid; Other Solid; Dry Powder; Large Crystals
• Colourless crystals or a fine, white, crystalline powder; The decahydrate is efflorescent
• White, hygroscopic solid; Available forms are anhydrous (7757-82-6) and decahydrate (7727-73-3); [CHEMINFO]
• WHITE HYGROSCOPIC SOLID IN VARIOUS FORMS.
• Powder or orthorhombic bipyramidal crystals
• White orthorhombic crystals or powder

Regulatory Status

Regulatory & Food Contact	FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS COLOUR_RETENTION_AGENT: Food Additives GLAUBER'S SALT NOT SPECIFIED TRS 909-JECFA 57/42 FAS 44-JECFA 53/113 (1999)
GHS notification summary	96.5% (4127 / 4277)

GHS Hazard Classification

GHS notification summary	96.5% (4127 / 4277)
Reported hazard statements	H320, H370

Documented Uses

• It is produced from mineral deposits and may contain the following contaminants: dichromate (less than 0.2%), sodium sulfite, sodium chloride, magnesium chloride, magnesium sulfate, lithium carbonate, lithium sulfate, ferric oxide, cupric chloride, sodium hydrogen sulfate, sodium thiosulfate, and boric acid; [CHEMINFO]
• Textiles (Printing, Dyeing, or Finishing) [Category: Industry]
• Textile arts [Category: Hobbies]
• For standardizing dyes; in freezing mixtures; in dying and printing textiles.
• The anhydrous form for drying organic liquids; in Kjeldahl nitrogen determination; in manufacture of glass, ultramarine, paper pulp.
• Manufacture of kraft paper, paperboard, and glass; filler in synthetic detergents; sodium salts; ceramic glazes; processing textile fabrics; dyes, tanning; pharmaceuticals; freezing mix; laboratory reagent; food additive.

Synonyms

SODIUM SULFATE; 7757-82-6; Disodium sulfate; Sodium sulfate anhydrous; Sodium sulfate, anhydrous; Salt cake; Sodium sulphate; Sulfuric acid disodium salt; Disodium sulphate; Sodium sulphate anhydrous; Sodium sulfate (2:1); Bisodium sulfate; Sodium sulfate, dried; Anhydrous sodium sulfate; Disodium monosulfate; Dibasic sodium sulfate

Frequently Asked Questions

What are the CAS number and molecular formula of Sodium sulphate decahydrate?

CAS 13759-07-4; molecular formula Na2SO4; molecular weight — g/mol.

What other names is Sodium sulphate decahydrate known by?

SODIUM SULFATE, 7757-82-6, Disodium sulfate, Sodium sulfate anhydrous, Sodium sulfate, anhydrous, Salt cake.

What is the regulatory status of Sodium sulphate decahydrate?

Documented regulatory listings: FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS; COLOUR_RETENTION_AGENT: Food Additives; GLAUBER'S SALT.

Is Sodium sulphate decahydrate classified as hazardous?

96.5% of GHS notifications report no hazard classification (4127 of 4277).

What are the key physical properties of Sodium sulphate decahydrate?

Melting Point: 884 °C; Melting Point: 888 °C; Density: 2.671; Density: 2.671 @25 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.