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Sodium sulfate

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Identification
Molecular formula
Na2SO4
CAS number
7757-82-6
IUPAC name
disodium;sulfate
State
State

Sodium sulfate is commonly encountered as a solid at room temperature. It is known for being quite stable and non-reactive under typical conditions.

Melting point (Celsius)
884.00
Melting point (Kelvin)
1 157.00
Boiling point (Celsius)
1 429.00
Boiling point (Kelvin)
1 702.00
General information
Molecular weight
142.04g/mol
Molar mass
142.0400g/mol
Density
2.6640g/cm3
Appearence

Sodium sulfate is an odorless, white, crystalline solid. It typically forms as large, transparent crystals or granules.

Comment on solubility

Solubility of Disodium Sulfate

Disodium sulfate, or Na2SO4, is known for its remarkable solubility in water. The solubility characteristics of disodium sulfate can be highlighted as follows:

  • High Solubility: Disodium sulfate has a high solubility, which allows approximately 35.7 grams to dissolve in 100 milliliters of water at 20°C.
  • Temperature Dependence: The solubility of disodium sulfate increases with temperature—about 40.0 g per 100 mL at 80°C compared to lower levels at room temperature.
  • Solvent Interaction: It showcases ionic interactions in water, dissociating into Na+ and SO42- ions, contributing to its effective solubility.
  • Limited Solubility in Organic Solvents: Conversely, disodium sulfate is poorly soluble in most organic solvents, highlighting its ionic nature and preference for polar solvents.

In practical applications, this solubility profile makes disodium sulfate an excellent candidate for various industrial processes including:

  1. Textile manufacturing
  2. Glass production
  3. Food processing as a drying agent

Overall, the solubility of disodium sulfate is a key property that determines its utility in both laboratory and industrial contexts, firmly establishing its importance in chemical applications.

Interesting facts

Interesting Facts about Disodium Sulfate

Disodium sulfate, commonly referred to as sodium sulfate, is an intriguing compound with numerous applications in both industrial processes and everyday products. Here are some fascinating aspects of this chemical:

  • Versatile Applications: Disodium sulfate is widely used in the manufacturing of glass, as it acts as a flux to lower the melting temperature of the raw materials.
  • Textile Industry: It is also employed in the textile industry for dyeing and printing fabrics, helping to improve the efficiency of the dyeing process.
  • Drying Agent: This compound serves as an effective drying agent in chemical reactions, absorbing moisture and thereby enhancing reaction efficiency.
  • Environmentally Friendly: Disodium sulfate is considered an environmentally benign compound, making it favorable compared to other chemical agents.
  • Historical Significance: The compound has been used for centuries; it was known to the Greeks and Romans and was harvested from natural mineral deposits.
  • Biological Role: Sodium sulfate plays a role in biological systems, where it participates in cellular metabolism and various biochemical processes.
  • Industrial Significance: The global production of liquid sodium sulfate exceeds several million tons annually, highlighting its importance in various sectors.

In summary, disodium sulfate is not just a simple chemical compound but a multifaceted substance with a rich history and a variety of applications across different fields. As stated by renowned chemist Sir Humphry Davy, "The beautiful is as useful as the useful," and disodium sulfate exemplifies this sentiment through its pleasing value in both scientific and industrial communities.

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
Bisodium sulfate
Anhydrous sodium sulfate
Na sulphate
Sodium sulphate, anhydrous
Sodium sulfate (Na2SO4)
Caswell No. 793
Natriumsulfat
Na2SO4
HSDB 5042
UNII-36KCS0R750
CHEBI:32149
36KCS0R750
EINECS 231-820-9
EPA Pesticide Chemical Code 005604
NSC 403914
NSC-403914
AI3-02398
NATRII SULFAS ANHYDRICUS
EC 231-820-9
Sulfuric acid disodium salt, anhydrous
SODIUM SULFATE ANHYDROUS (II)
SODIUM SULFATE ANHYDROUS [II]
ANHYDROUS SODIUM SULFATE (MART.)
ANHYDROUS SODIUM SULFATE [MART.]
SODIUM SULFATE ANHYDROUS (USP MONOGRAPH)
SODIUM SULFATE ANHYDROUS [USP MONOGRAPH]
SODIUM SULFATE, ANHYDROUS (EP MONOGRAPH)
SODIUM SULFATE, ANHYDROUS [EP MONOGRAPH]
SAL MIRABILIS ANHYDRICUS
Sodium sulfate sodium salt (Na2SO4)
SODIUM SULFATE COMPONENT OF SUPREP BOWEL PREP KIT
231-820-9
chebi:32586
natrii sulfus
natrium sulfuricum
natrum sulphuricum
nsc403914
sodium sulfate (ii)
sodium sulfate (mart.)
sodium sulfate (usp monograph)
suprep bowel prep kit component sodium sulfate
unii-0ypr65r21j
sodiumsulfate
disodium;sulfate
Sulfuric acid, sodium salt
15124-09-1
Sulfate, sodium
Sodium sulfate, dried
Sodium sulfate, dried [JAN]
MFCD00003504
DTXSID1021291
13759-07-4
Sodium sulfate, dried (JAN)
Dibasic sodium sulfate
Natriumsulfat (German)
Sulfuric acid sodium salt (1:2)
Na2O4S
Thenardite (Na2(SO4))
Glaubers salt
EINECS 268-366-6
EINECS 268-773-9
EINECS 270-211-2
Sodium sulfate anyhdrous
SDA 17-062-04
Sulfuric acid sodium salt
SODIUM SULFATE [MI]
Sodium sulfate, ACS reagent
Sodium sulfate, dried (TN)
SODIUM SULFATE [HSDB]
CHEMBL233406
DTXCID601291
Anhydous sodium sulfate (JP17)
7757-82-6 (anhyd.)
BCP13313
Tox21_201045
AKOS015833463
ANHYDROUS SODIUM SULFATE [JAN]
Sodium sulfate, BioXtra, >=99.0%
DB09472
FS12179
NCGC00258598-01
Sodium sulfate, LR, anhydrous, >=99%
E514
SODIUM SULFATE ANHYDROUS [USP-RS]
SODIUM SULFATE ANHYDROUS [WHO-DD]
Sodium Sulfate Anhydrous; Sodium sulphate
CAS-7757-82-6
Sodium sulfate 5% (w/w) aqueous solution
DB-231847
SODIUM SULFATE, ANHYDROUS [WHO-IP]
Sodium sulfate, AR, anhydrous, >=99.5%
NS00081401
S0566
Sodium sulfate, 99.9955% (metals basis)
Sodium sulfate, ReagentPlus(R), >=99.0%
SODIUM SULFATE ANHYDROUS [ORANGE BOOK]
Sodium sulfate, Trace metals grade, 99.99%
D01732
NATRII SULFAS ANHYDRICUS [WHO-IP LATIN]
Sodium sulfate, >=99.99% trace metals basis
Sodium sulfate, JIS special grade, >=99.0%
Sodium sulfate, Vetec(TM) reagent grade, 99%
Q211737
Sodium sulfate, for HPLC, 99.0-101.0% (T)
Sodium sulfate, purum, anhydrous, >=99.0% (T)
Sodium sulfate, SAJ first grade, >=99.0%, beads
Sodium sulfate, SAJ first grade, >=99.0%, powder
Sodium sulfate, >=99.0%, plant cell culture tested
Sodium sulfate, BioUltra, anhydrous, >=99.0% (T)
Sodium sulfate, p.a., 99.0-101.0%, reag. ISO
Sodium sulfate, tested according to Ph.Eur., anhydrous
SULFURIC ACID DISODIUM SALT, ANHYDROUS [WHO-IP]
Sodium sulfate, ACS reagent, >=99.0%, anhydrous, powder
Sodium sulfate, ACS reagent, >=99.0%, anhydrous, granular
Sodium sulfate, anhydrous, free-flowing, Redi-Dri(TM), ACS reagent, >=99%
Sodium sulfate, anhydrous, free-flowing, Redi-Dri(TM), ReagentPlus(R), >=99%
Sodium sulfate, anhydrous, granular, free-flowing, Redi-Dri(TM), ACS reagent, >=99%
Sodium sulfate, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., anhydrous, >=99.0%