Description
Barium Sulphate 98% Blanc Fixe
We are a bulk barium sulphate supplier of 98% blanc fixe. Barium Sulphate 98% Blanc Fixe (CAS 7727-43-7, molecular formula BaSO4) is a coatings raw material used by paint, ink and adhesive formulators who need consistent dispersion, opacity and rheology from drum to drum. China Chemicals supplies it at 98% min in pack sizes from 1 kg through to 1000 kg Bulk Bag, so laboratory trial quantities and full production volumes can be sourced from the same specification.
It is also traded as Blanc Fixe, Precipitated Barium Sulphate, Barytes. Every consignment ships with a batch-specific Certificate of Analysis and the current Safety Data Sheet, and material is stored and picked under stock rotation so you receive product well inside its shelf life.
Typical applications
- Functional extender in industrial and automotive paint
- Filler improving gloss and chemical resistance
- Weighting agent in oilfield drilling fluid
- Filler in plastics, rubber and friction materials
- Radiopaque filler in specialist applications
Technical specification
| Chemical name | Barium Sulphate 98% Blanc Fixe |
|---|---|
| Synonyms | Blanc Fixe, Precipitated Barium Sulphate, Barytes |
| CAS number | 7727-43-7 |
| Molecular formula | BaSO4 |
| Appearance | White fine powder |
| BaSO4 content | 98.0% min |
| Whiteness | 96% min |
| Oil absorption | 12 – 18 g/100 g |
| Water solubles | 0.3% max |
| Moisture | 0.3% max |
| Particle size D50 | 1.0 – 2.0 µm |
Values above are typical and are confirmed on the Certificate of Analysis issued against each batch. Tighter specifications can be quoted where a process requires them.
Packaging and supply
Available in 1 kg, 5 kg, 25 kg Bag, 1000 kg Bulk Bag. Bulk, road tanker and export drum quantities are quoted on request, including FOB and CIF terms for international shipment. Pricing shown is per pack in USD, exclusive of freight and any applicable duties.
Handling and safety
Transport classification: Not regulated · Not classified as hazardous. Store in the original closed container in a cool, well-ventilated area away from incompatible materials, and handle using appropriate personal protective equipment. Read the Safety Data Sheet in full before use — it is issued with every order and is available on request before purchase.
Supply to industry only. Products are sold for legitimate industrial, laboratory and manufacturing use. We may request end-use details and business registration before releasing an order.
What Is Barium Sulphate 98% Blanc Fixe?
Blanc Fixe is the trade name for chemically precipitated barium sulphate, made by reacting a barium salt in solution and precipitating ultra-pure BaSO4 crystals, rather than grinding the natural mineral barite. This controlled process gives a tighter, more repeatable particle size than ground natural material, which is exactly why formulators specify Blanc Fixe where consistent gloss, dispersion and binder demand matter from batch to batch.
Precipitated (Synthetic) vs. Natural Barite
Natural barite is mined and ground, so particle size, whiteness and chloride content vary with the source deposit. Precipitated barium sulphate is manufactured in solution, giving a narrow, repeatable particle size distribution, higher whiteness and far lower grit and chloride content. For automotive refinish, powder coatings and high-solids pigment pastes, the precipitated grade is the one specified, not ground barite.
Handling & Safety
Barium sulphate is classified as non-hazardous under the OSHA Hazard Communication Standard and carries no GHS health or physical hazard classification — it is not combustible and shows very low acute oral toxicity. This extreme insolubility is the same property that makes barium sulphate the compound used as the contrast medium in medical barium-swallow X-rays. Standard industrial dust precautions (safety glasses, avoiding inhalation of fine powder) remain good practice when handling any bulk mineral powder.
Frequently Asked Questions
What is the difference between Blanc Fixe and natural barite?
Blanc Fixe is chemically precipitated (synthetic) barium sulphate with a controlled, narrow particle size and high purity. Natural barite is mined and mechanically ground, giving more variable particle size and lower batch-to-batch consistency.
Is barium sulphate hazardous to handle?
No. It is classified as non-hazardous under the OSHA Hazard Communication Standard and is not GHS-classified for health or physical hazards, with very low acute toxicity. Standard dust precautions still apply as good industrial practice.
What is barium sulphate used for in paints and coatings?
It functions as a functional extender pigment, adding opacity, gloss and chemical/UV resistance without affecting colour strength, typically used alongside prime pigments such as Titanium Dioxide Rutile and extenders such as Precipitated Calcium Carbonate.
Can barium sulphate be used in plastics and rubber?
Yes. It is a common filler in PVC, elastomers and moulded plastics, adding density and chemical resistance while remaining chemically inert within the polymer matrix.
What packaging and order quantities are available?
We supply from 1 kg trial quantities through to 1000 kg Bulk Bag for full production runs. Contact us with your required volume for current pricing and lead time.
Your Trusted Barium Sulphate Supplier
As an established barium sulphate supplier, we serve manufacturers and processors with consistent quality and reliable delivery. The right barium sulphate supplier gives you steady specification and documentation batch after batch, and as your barium sulphate supplier we back every order with a Certificate of Analysis.
For further independent reference, see the Wikipedia entry on barium sulfate, and browse our full Coatings & Paint Raw Materials range.
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