SODIUM CARBONATE- ▸ Glass manufacturing: primary flux for container and flat glass
- ▸ Detergents & cleaners: builder and alkalinity source
- ▸ pH & alkalinity control: raises pH and softens water in processing
- ▸ Pulp, paper & textiles: scouring and dye fixation
- ▸ Water treatment & flue-gas desulfurization
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →Soda ash (sodium carbonate, Na2CO3, CAS 497-19-8) is a strong alkaline salt used in glass manufacturing, detergents and soaps, water treatment, and pH adjustment. It dissolves readily to give a high-alkalinity solution, supplies sodium and carbonate ions to downstream reactions, and acts as a low-cost, non-volatile base. RawSource supplies it in two anhydrous forms — dense and light grades — that share identical chemistry but differ in bulk density, particle size, and handling behavior.
Dense vs. light soda ash: which grade to specify
Both grades are the same compound; the difference is physical, and it drives the buying decision. Dense soda ash has larger, heavier granules that resist segregation and dust in high-throughput plants. Light soda ash is finer and dissolves faster, which suits batch detergent and chemical processing. Glassmakers almost always specify dense to match silica sand density in the furnace batch; detergent and many liquid-process users favor light.
| Property | Dense soda ash | Light soda ash |
|---|---|---|
| Bulk density (typical) | ~0.9–1.1 g/cm³ | ~0.5–0.6 g/cm³ |
| Particle size | Coarse granules | Fine, powdery |
| Flow / dusting | Free-flowing, low dusting | More dusting, can bridge |
| Dissolution rate | Slower | Faster |
| Typical use | Glass manufacturing, bulk handling | Detergents, chemical/liquid processing |
Applications by sector
Glass manufacturing is the single largest outlet. Soda ash is the flux that lowers the melting point of silica sand, cutting furnace energy and forming soda-lime glass for containers, flat/float glass, and fiberglass. Dense grade is standard here because its density matches the sand in the batch and limits carryover. Soaps and detergents use soda ash as a builder and alkalinity source: it sequesters hardness ions, raises wash-water pH, and boosts surfactant performance in powder and liquid formulations.
Water and wastewater treatment relies on it to raise pH and alkalinity, to soften water by precipitating calcium and magnesium as carbonates (lime-soda softening), and to stabilize finished water against corrosivity. Chemical manufacturing consumes large volumes as a feedstock — for sodium silicates, sodium bicarbonate, sodium percarbonate, sodium phosphates, and a range of other sodium salts and pigments. In pulp and paper, it supports pulping, deinking, and pH control. In metallurgy and mining, it adjusts flotation circuits, removes sulfur and phosphorus in some refining steps, and is used in flue-gas desulfurization to neutralize acidic gases.
Sodium carbonate is also recognized as food additive E500 (acidity regulator/raising agent) in food-grade applications — supplied to specification where the buyer requires it. Across textiles, ceramics, and general processing, it serves as a workhorse pH adjuster wherever a stable, inexpensive, non-volatile base is needed. The practical trade-off: soda ash is a strong base and a higher chloride or sulfate content in cheaper material can matter in sensitive glass or electronics-grade work, so match grade and CoA to the application rather than buying on price alone.
Natural vs. synthetic source
Soda ash reaches the market by two routes. Natural soda ash is refined from trona ore (notably large U.S. deposits) and tends to carry a lower processing energy footprint. Synthetic soda ash is made by the Solvay (ammonia-soda) process from salt brine and limestone. Both deliver the same Na2CO3 compound and meet the same grade specs; sourcing route can affect impurity profile and availability, so specify if your process requires natural or synthetic material.
Handling and safety
Sodium carbonate is alkaline and classified as an irritant (GHS signal word: Warning; H319 causes serious eye irritation, H335 may cause respiratory irritation). It can irritate the eyes, skin, and respiratory tract, and airborne dust from the light grade warrants particular care. Use appropriate eye protection, gloves, and dust control, and keep it dry and away from acids and aluminum. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport, or disposal.
Bulk supply and RFQ
RawSource supplies soda ash in industrial quantities — multiwall bags, super-sacks (FIBC), and bulk — with a Certificate of Analysis and SDS per lot. To get a quote, specify grade (dense or light), volume, packaging, and delivery location, and we will confirm pricing, lead time, and documentation. Request a bulk quote to start sourcing.
Frequently Asked Questions
Is soda ash the same as sodium carbonate?
Yes. “Soda ash” is the industrial trade name for sodium carbonate (Na2CO3, CAS 497-19-8). It is also called washing soda or soda crystals in some contexts. They refer to the same compound.
What is the difference between dense and light soda ash?
The chemistry is identical; the difference is physical. Dense soda ash has larger, heavier granules with low dusting and is preferred for glass and bulk handling. Light soda ash is finer, dissolves faster, and is favored in detergents and liquid chemical processing.
What is soda ash used for?
Its largest use is glass manufacturing, where it acts as a flux. It is also used in soaps and detergents (builder/alkalinity), water and wastewater treatment (pH, softening, alkalinity), chemical manufacturing (feedstock for silicates, bicarbonate, and other sodium salts), pulp and paper, metallurgy and flue-gas treatment, and general pH adjustment.
Is soda ash the same as baking soda?
No. Baking soda is sodium bicarbonate (NaHCO3), a milder alkali. Soda ash is sodium carbonate (Na2CO3), which is more strongly alkaline. Heating sodium bicarbonate drives off carbon dioxide and water to form sodium carbonate; they have different CAS numbers and different uses.
Is sodium carbonate safe to handle?
Sodium carbonate is alkaline and is classified as an irritant (GHS Warning; H319, H335). It can irritate the eyes, skin, and respiratory tract, and dust should be controlled. Use appropriate PPE and follow the current SDS for safe handling, storage, and disposal.
Which grade is used for glass versus detergents?
Glass manufacturers typically specify dense soda ash because its bulk density matches silica sand in the furnace batch and it dusts less. Detergent and many liquid-process formulators typically use light soda ash for its faster dissolution and easier blending.
How is soda ash supplied in bulk?
RawSource supplies soda ash in multiwall bags, super-sacks (FIBC), and bulk, with a Certificate of Analysis and SDS per lot. Pricing depends on grade, packaging, and volume — request a bulk quote with your grade (dense or light), volume, and delivery location.