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Home > Products > Inorganic Chemicals > Sodium Sulfate

Sodium Sulfate

Name: Sodium Sulfate
SKU: 0

CAS No.: 7757-82-6
Molecular Formula: Na2SO4
Molecular weight: 142.04214

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product description

Sodium Sulfate, with the chemical formula Na₂SO₄, is an inorganic compound. It is a white, odorless crystalline solid, soluble in water, and has stable chemical properties, widely used in various industrial and agricultural fields.

Chemical Properties

Property	Value
Melting Point	884 °C (lit.)
Boiling Point	1700°C
Bulk Density	1400-1600 kg/m³
Density	2.68 g/mL at 25 °C (lit.)
Refractive Index	1.484
Storage Conditions	Store at +5°C to +30°C.
Solubility	H₂O: 1 M at 20 °C, clear, colorless
Acid Dissociation Constant (pKa)	4.76
Form	Powder
Color	White
Specific Gravity	2.68
Odor	White crystals or powder, odorless, bitter salty taste
pH Value	5.2-8.0 (50g/l, H₂O, 20°C)
pH Range (Indicator)	5.2 - 9.2
Water Solubility	18.5 mg/L
Wavelength Maximum (λ_max)	λ: 260 nm Amax: 0.015 λ: 280 nm Amax: 0.015
Sensitivity	Hygroscopic
Merck	14,8680
Dielectric Constant	2.7 (Ambient)
Stability	Stable. Incompatible with strong acids, aluminum, magnesium, strong bases. Hygroscopic.
Cosmetic Ingredient Functions	BULKING, VISCOSITY CONTROLLING
InChI	1S/2Na.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q2*+1;/p-
InChIKey	PMZURENOXWZQFD-UHFFFAOYSA-L
SMILES	[Na+].[Na+].[O-]S([O-])(=O)=O
LogP	-1.031 (est)
CAS Database	7757-82-6 (CAS DataBase Reference)
NIST Chemical Substances Information	Sodium sulfate (7757-82-6)
EPA Chemical Substances Information	Sodium sulfate (7757-82-6)

Safety Information

Property	Value
Hazard Symbols	Xi
Hazard Class Codes	36/37/38
Safety Description Codes	24/25
WGK Germany	1
RTECS Number	WE1650000
F	3
TSCA	TSCA listed
HS Code	28331100
Storage Class	13 - Non-combustible solids
Hazardous Substances Data	7757-82-6 (Hazardous Substances Data)
Toxicity	LD50 orally in Rabbit: > 2000 mg/kg

Product Usage

Sodium sulfate is an important inorganic chemical raw material. In the detergent industry, it is used as a filler and additive to improve detergency and prevent caking. In the textile and dyeing industry, it serves as an accelerating agent for sulfur dyes and vat dyes, helping dyes adhere evenly, and is also used for degreasing and scouring textile fibers. In the glass and paper industries, it helps clarify glass melts and adjust pulp properties. Additionally, it is used as a degreasing agent in leather processing, and as a drying agent and synthetic raw material in pharmaceuticals and chemicals. Its advantages include wide availability, low cost, and good chemical stability.

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FAQ

Q1：Does it support customized products?

A1：Yes, it does. Formulations can be adjusted and customized production can be carried out according to customer's industry needs and performance parameters.

Q2：Can samples be provided?

A2：We support free sample delivery and testing services to meet customers' early testing needs.

Q3：Is the product quality stable?

A3：With full-process quality inspection and control, there are minimal batch differences, and the purity and stability strictly meet the standards.

Q4：What is the shipping cycle?

A4：For regular inventory, we offer quick delivery. For customized orders, we arrange production according to demand and ensure timely delivery.

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