Sodium Selenite Supplier in Malaysia
Sodium selenite supplier for animal-feed, aquaculture and trace-element premix manufacturers in Malaysia. This page covers sodium selenite as a B2B raw material in anhydrous or pentahydrate form, usually supplied as a white crystalline powder or crystals according to the selected hydration basis.
Feed-grade choices include anhydrous sodium selenite and sodium selenite pentahydrate. Buyers should state the exact form because water of crystallisation changes the mass, assay and selenium-content basis. Purity, moisture, particle form and impurity limits are matched to the receiving specification without assuming one universal selenium value.
Feed and aquaculture formulators use sodium selenite as a controlled trace selenium input in mineral premixes and compound-feed programmes. Premix manufacturers may use it to produce diluted carrier formulations, but those finished premixes are separate products. Sodium selenate, elemental selenium and selenium powder also remain separate identities.
Send the required hydration form, feed grade or other purity requirement, assay basis, application, quantity and delivery location with your enquiry. Availability, suitable packing, available documentation and delivery timing are confirmed with the quotation.

- Grade
- feed, anhydrous, pentahydrate
- Appearance
- white crystalline powder or crystals according to hydration form
Sodium Selenite grades and forms
We supply several forms to suit different formulating and dosing setups. If you need a size that is not listed, ask us.
| Grade | Form | Assay | Typical use | Packing |
|---|---|---|---|---|
| Feed-grade anhydrous sodium selenite | white crystalline powder on an anhydrous basis | — | Trace-element input for animal-feed and aquaculture premix manufacture where the formulation and receiving specification require anhydrous sodium selenite. | Confirm the required pack format with the quotation. |
| Feed-grade sodium selenite pentahydrate | white crystalline powder or crystals on a pentahydrate basis | — | Feed and aquaculture trace-element formulations whose calculation and product specification explicitly use sodium selenite pentahydrate rather than the anhydrous salt. | Confirm the required pack format with the quotation. |
How to buy Sodium selenite from ChemTrade
Request a quote for Sodium selenite
Use the form below to request a quotation. You can also email sales@chemtrademalaysia.com or send us a message on WhatsApp.
Specifications
| Parameter | Value | Method |
|---|---|---|
| Product identity | sodium selenite; not sodium selenate or elemental selenium | — |
| Hydration form | anhydrous or pentahydrate, as specified by the buyer | — |
| Appearance | white crystalline powder or crystals according to hydration form | — |
| Assay basis | sodium selenite assay and selenium basis stated for the selected hydration form without treating anhydrous and pentahydrate material as equivalent | — |
| Physical form | powder, crystals or buyer-specified particle form | — |
| Application controls | impurity, moisture and particle requirements selected for the intended feed, premix-manufacturing or laboratory use | — |
Sodium Selenite applications
Safety and handling
Keep sodium selenite sealed in a cool, dry place and protect it from moisture, contamination and unintended access. Follow the safety, storage and handling information supplied for the quoted grade.
Common questions about Sodium selenite
What is the difference between anhydrous sodium selenite and sodium selenite pentahydrate?
Anhydrous sodium selenite has no water of crystallisation, while the pentahydrate contains water within its crystal structure. Their material and selenium-content bases are therefore different, so the hydration form must be stated and the formulation calculation checked before use.
Why must a sodium selenite specification state the hydration form?
Hydration changes the mass basis used for assay and formulation. A specification that says only sodium selenite can be ambiguous, so buyers should identify anhydrous or pentahydrate and state how assay or selenium content is expressed without assuming the forms are interchangeable.
Is sodium selenite the same as sodium selenate?
No. Sodium selenite and sodium selenate are different selenium salts with different chemical identities and specification bases. This page covers sodium selenite only; name sodium selenate separately if that is required.
Is sodium selenite the same as elemental selenium?
No. Elemental selenium is the element in a defined solid form, while sodium selenite is a sodium salt. Selenium metal, selenium powder and other selenium compounds are separate products and are not aliases or grades of sodium selenite.
Does this page cover a diluted sodium selenite feed premix?
No. This page covers the sodium selenite raw material. A feed premix contains a carrier and may contain other trace ingredients, so it has its own concentration, composition, handling and specification.
Which sodium selenite specifications should a feed buyer provide?
State anhydrous or pentahydrate form, feed-grade requirement, sodium selenite assay or selenium basis, particle form, impurity limits and any documentation needed by the premix or compound-feed programme. No universal selenium-content value should be assumed.
Can packing and product documents be requested for sodium selenite?
Yes. List the preferred pack format and the documents needed for supplier qualification. Suitable packing and available documentation are confirmed for the selected form and grade with the quotation.
What details are needed for a sodium selenite price enquiry?
Provide the hydration form, grade, assay basis, impurity specification, application, quantity and delivery location. Add packing and documentation requirements so the offer covers the correct sodium selenite material.
