Can anhydrous Sodium Carbonate CAS 497-19-8 be replaced by a hydrate at the same weight?

No. CAS 497-19-8 identifies anhydrous sodium carbonate. The monohydrate and decahydrate contain water of crystallization and have different CAS numbers, so equal weights do not provide the same Na2CO3 amount. Confirm the hydration state, assay basis, moisture specification and active or molar conversion before substitution.

Are light and dense soda ash chemically the same product?

Both are anhydrous sodium carbonate, but their bulk density and particle-size distribution differ. They may therefore feed, dissolve, dust and occupy storage volume differently, even when the Na2CO3 assay is similar. Specify light or dense grade, bulk-density range, particle-size distribution and the process feeding basis rather than ordering by CAS number alone.

Which specification points should be compared for industrial Sodium Carbonate?

Compare Na2CO3 assay, chloride, sulfate, iron, water-insoluble matter, loss on drying or moisture, bulk density and particle-size distribution. Add trace-metal or application-specific limits where required by glass, detergent, silicate or water-treatment operations. Grade name alone is insufficient; methods and acceptance limits should be agreed before qualification.

Sodium Carbonate CAS 497-19-8

Sodium Carbonate , CAS 497-19-8 and EC 207-838-8 , is anhydrous Na2CO3 with molecular weight 105.99 g/mol. Industrial soda ash is commonly supplied as light or dense grade; these forms share the same chemical identity but differ in bulk density, particle behavior and handling. Procurement should therefore specify grade, dry-basis assay, bulk density, particle size, chloride, iron and insoluble matter according to the glass, detergent, water-treatment or chemical-process application. Sodium Percarbonate is a related oxygen-release compound based on sodium carbonate and hydrogen peroxide for detergent bleaching systems.

CAS: 497-19-8
Synonyms: Sodium Carbonate, Soda ash, Disodium carbonate, Carbonic acid disodium salt, Anhydrous sodium carbonate
Einecs: 207-838-8
Molecular Formula: Na₂CO₃
Grade: Confirm light or dense grade, dry-basis assay, bulk density, particle size, loss on heating or moisture, chloride, iron, sulfate and water-insoluble matter against the current COA or TDS.
Package: State required form, quantity and destination; confirm the current bag or container, liner, net weight, moisture or corrosion controls, palletization and transport requirements before quotation.

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Product Description

1 Identity and physicochemical profile

2 Applications and grade selection

3 Storage and handling

4 Safety, documentation and procurement

Identity and physicochemical profile

Item	Technical guidance
Product identity	Anhydrous sodium carbonate; soda ash
CAS / EC	497-19-8 / 207-838-8
Formula / molecular weight	Na₂CO₃ / 105.99 g/mol
Commercial grades	Light and dense soda ash have the same chemistry but different bulk density and particle-handling characteristics
Key purchase controls	Dry-basis assay, loss on heating or moisture, bulk density, particle size, chloride, iron, sulfate and water-insoluble matter
Hydrate boundary	The anhydrous product should not be confused with sodium carbonate monohydrate or decahydrate

Applications and grade selection

Sodium Carbonate is used for alkalinity, sodium-oxide input and pH control in glass, detergents, silicates, water treatment and other industrial chemical processes. Grade selection depends on bulk handling, dissolution rate and impurities that affect color, filtration, scaling or final-product performance.

Choose light or dense grade according to conveying, dust, dissolution and storage requirements.
Define dry-basis assay, bulk density, particle size and application-sensitive chloride, iron, sulfate or insoluble limits.
Verify dosing, dissolution, filtration and final-product performance under actual plant conditions.

Storage and handling

Store in dry, sealed, moisture-resistant packaging or a suitable bulk silo. Prevent caking, water ingress and contamination with acids or incompatible materials, and follow the current SDS for dust and handling controls.

Safety, documentation and procurement

Sodium Carbonate is alkaline and can irritate eyes, skin and the respiratory tract. Use dust control and suitable personal protection. Procurement should state grade, specification, quantity, packaging, destination and delivery schedule.

FAQ - Technical & Supply Chain

Q:
Can anhydrous Sodium Carbonate CAS 497-19-8 be replaced by a hydrate at the same weight?

A: No. CAS 497-19-8 identifies anhydrous sodium carbonate. The monohydrate and decahydrate contain water of crystallization and have different CAS numbers, so equal weights do not provide the same Na2CO3 amount. Confirm the hydration state, assay basis, moisture specification and active or molar conversion before substitution.
Q:
Are light and dense soda ash chemically the same product?

A: Both are anhydrous sodium carbonate, but their bulk density and particle-size distribution differ. They may therefore feed, dissolve, dust and occupy storage volume differently, even when the Na2CO3 assay is similar. Specify light or dense grade, bulk-density range, particle-size distribution and the process feeding basis rather than ordering by CAS number alone.
Q:
Which specification points should be compared for industrial Sodium Carbonate?

A: Compare Na2CO3 assay, chloride, sulfate, iron, water-insoluble matter, loss on drying or moisture, bulk density and particle-size distribution. Add trace-metal or application-specific limits where required by glass, detergent, silicate or water-treatment operations. Grade name alone is insufficient; methods and acceptance limits should be agreed before qualification.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Support is available for samples, trial orders, bulk and repeat supply.

Storage & Shipping

Product-specific conditions are confirmed before order.

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