Sodium Sulphate
Chelora Chemicals supplies Sodium Sulphate (Na2SO4, CAS 7757-82-6) in anhydrous and decahydrate (Glauber's Salt) forms, a high-volume inorganic salt used as a filler in powder detergent formulations, a dyeing auxiliary in textile processing, and a feedstock in kraft pulp manufacturing and glass processing. Bulk export shipments move from Indonesia in moisture-controlled packaging suited to the detergent and textile industries' consumption volumes.
What Sodium Sulphate is, and why buyers source it
Sodium Sulphate is one of the highest-volume inorganic salts in industrial trade, valued for its low cost, chemical inertness in most applications, and functional role as a filler, dyeing auxiliary and process chemical across detergent, textile and pulp manufacturing.
In powder detergent formulations, Sodium Sulphate functions as an inert filler and flow-aid, bulking the product and improving powder flow characteristics without participating in the cleaning chemistry itself.
In textile dyeing, particularly with reactive and direct dyes, Sodium Sulphate promotes dye exhaustion onto the fibre by reducing dye solubility in the dye bath, improving colour yield and uniformity.
How Sodium Sulphate is made
An overview of the production route for orientation purposes. Our manufacturing partners' own process parameters and in-process controls are proprietary and are not disclosed beyond what is needed to interpret the certificate of analysis.
Sodium Sulphate is produced both from natural mineral sources (mirabilite/thenardite deposits) and as a by-product of various chemical processes, including viscose rayon manufacture and certain acid-neutralisation reactions using sulphuric acid and sodium chloride or sodium hydroxide.
Crystallisation, washing and drying are controlled to deliver consistent purity and particle size, with by-product sources requiring additional purification to meet detergent and textile-grade specifications.
Industries and processes that use it
Sodium Sulphate's applications centre on detergent formulation, textile dyeing, and pulp and glass manufacturing.
Powder Detergent Filler
Inert bulking agent and flow-aid in powder detergent formulations.
Textile Dyeing Auxiliary
Promotes dye exhaustion and improves colour yield in reactive and direct dye processes.
Kraft Pulp Manufacturing
Used as a make-up chemical in the kraft recovery cycle to replace sulphur losses in the pulping process.
Glass Manufacturing
Fining agent that helps remove air bubbles from molten glass during production.
How the molecule is typically carried forward
Sodium Sulphate functions primarily through its physical and ionic properties rather than through a specific chemical reaction in most of its applications.
Incorporation
Sodium Sulphate is incorporated into the formulation (detergent powder blend, dye bath, pulping liquor, or glass batch).
Functional Role
The salt performs its functional role: bulking, dye-bath salting-out, sulphur make-up, or glass fining.
Final Processing
Final product processing continues (drying, rinsing, recovery, or glass forming) with Sodium Sulphate's contribution complete.
Sodium Sulphate against other amines we supply
Sodium Sulphate is supplied alongside related bulk inorganic salts in Chelora's catalogue.
| Product | CAS Number | Category | Notes |
|---|---|---|---|
| Sodium Sulphate | 7757-82-6 | Inorganic sulphate salt | The product on this page — used as a detergent filler, dyeing auxiliary and process chemical. |
| Caustic Soda (Sodium Hydroxide) | 1310-73-2 | Strong industrial alkali | A related co-product chemistry alkali — see its product page. |
| Potassium Chloride | 7447-40-7 | Alkali-metal halide salt | A related bulk inorganic salt — see its product page. |
| Sodium Silicofluoride | 16893-85-9 | Fluorosilicate salt | Another sodium salt in our inorganic range — see its product page. |
Exact physical constants and purity specifications are confirmed per batch on the certificate of analysis — treat the notes above as a sourcing guide, not a specification sheet, for products other than Sodium Sulphate.
Safety classification at a glance
Based on GHS classification as commonly listed for this substance. This is a summary for orientation only — always work from the current safety data sheet supplied with your specific batch.
No significant hazard under standard GHS criteria.
Avoid prolonged inhalation of fine dust.
Essentially non-toxic at typical exposure levels.
Does not support combustion.
Dust mask recommended during bulk handling.
Safety glasses recommended.
Standard gloves sufficient.
Dry, well-ventilated area.
Sodium Sulphate is a low-hazard inorganic salt handled under standard industrial dust-control and housekeeping practices. Normal PPE (dust mask, safety glasses) is recommended during bulk loading and handling to avoid nuisance dust exposure.
Keeping it on spec between delivery and use
General storage guidance for this grade. Site-specific storage rules, segregation requirements and re-test intervals should follow your own EHS procedures and the MSDS issued with your batch.
Store in a dry, well-ventilated area away from moisture to prevent caking. Anhydrous grade should be protected from humidity to avoid hydration to the decahydrate form.
How it ships from Indonesia
Standard packing and export terms for this product. Confirm exact figures against your order — they vary slightly by destination and quantity.
What travels with every batch
Specification is agreed before the purchase order, not discovered on arrival. Every shipment of Sodium Sulphate leaves with a documented, checkable paper trail.
Certificate of Analysis
Batch-wise assay (by titration/GC), colour and relevant physical constants, issued against the agreed specification so your QC team can check it, not just file it.
Safety Data Sheet
GHS-format SDS in English covering hazard classification, handling, storage, first-aid and spill response for the exact grade of Sodium Sulphate shipped.
Technical Data Sheet
Reference physical and chemical properties, recommended storage and typical applications, for internal circulation to your process or R&D teams.
Certificate of Origin
Confirms Indonesian origin for customs clearance and any preferential-duty claim at your destination port.
Dangerous Goods Declaration
UN packing group, classification and shipper's declaration prepared ahead of loading so documentation never holds up customs.
Third-Party Inspection
Independent pre-shipment inspection and re-sampling can be arranged on request, at your cost, for buyers who require it as a matter of policy.
Frequently asked questions
What buyers most often ask our sales desk about this grade.
01What is Sodium Sulphate used for?+
02What is the difference between anhydrous Sodium Sulphate and Glauber's Salt?+
03What purity does Chelora Chemicals supply?+
04How is Sodium Sulphate packed for export?+
05Is Sodium Sulphate hazardous?+
06What is the typical lead time for export orders?+
07Does Chelora Chemicals provide a Certificate of Analysis?+
08What packaging sizes are available?+
09Can Sodium Sulphate cake during storage?+
10Is natural or synthetic Sodium Sulphate better for detergent applications?+
Need Sodium Sulphate on spec, on time?
Send us your required purity, quantity, packing preference and destination port. Our desk quotes most enquiries within one working day.