Chromic Acid (Chromium Trioxide) Supplier in Malaysia
- Also known as
- Chromium Trioxide
- Chromic Anhydride
- CrO3
Chromic acid supplier for plating, anodising and metal-finishing buyers in Malaysia. The traded article is chromium trioxide, CrO3, the dark red flake also written as chromic anhydride. It dissolves readily in water to give the strongly acidic chromium(VI) solution that a bath is made up from.
What separates one offer from another is the grade and the physical form. Plating and anodising grades are declared on a CrO3 basis with limits on sulphate, chloride and iron, because those figures decide how the tank behaves. Flake and lump dissolve at different rates, so name the one that suits your make-up routine.
Hard chrome and decorative chrome plating account for most demand, alongside chromic anodising, film sealing and conversion coating of metal surfaces. It is also used in timber preservation chemistry, chrome oxide and ceramic colour production, catalyst preparation and laboratory oxidation. Platable plastics are etched with it before metallising.
In this commercial sense chromic acid means chromium trioxide flake, not the dichromate salts, which are ordered separately. Send the grade, assay basis, impurity limits, quantity and delivery location with your enquiry, and pack format, documentation and timing are settled in the quotation. Supply is subject to applicable requirements.
- CAS number
- 1333-82-0
- Formula
- CrO3
- Grade
- plating, anodising, technical, reagent
- Appearance
- dark red to purple-red crystalline flake or lump
Chromic Acid 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 |
|---|---|---|---|---|
| Plating grade chromic acid flake | dark red crystalline flake | — | Make-up and replenishment of hard chrome and decorative chrome plating baths, where the CrO3 content and the sulphate, chloride and iron limits govern bath ratio and throwing power. | Confirm the required pack format with the quotation. |
| Anodising grade chromium trioxide flake | red to purple-red crystalline flake | — | Chromic anodising of aluminium, sealing of anodised films and conversion coating lines that specify a low-contaminant flake for the tank. | Confirm the required pack format with the quotation. |
| Technical grade chromic acid flake or lump | crystalline flake or lump solid | — | Broader industrial oxidation duties including timber preservation chemistry, chrome oxide and ceramic colour production, and catalyst preparation. | Confirm the required pack format with the quotation. |
| Reagent grade chromium trioxide | fine crystalline flake | — | Laboratory oxidation procedures, glassware cleaning mixtures and small-scale synthesis where a tighter purity profile is written into the method. | Confirm the required pack format with the quotation. |
How to buy chromic acid from ChemTrade
Request a quote for chromic acid
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 |
|---|---|---|
| Appearance | dark red to purple-red crystalline flake or lump | — |
| Chemical identity | chromium trioxide, the solid traded commercially under the name chromic acid | — |
| Chromium oxidation state | hexavalent chromium(VI) | — |
| CAS number | 1333-82-0 | — |
| Molecular formula | CrO3 | — |
| Molecular weight | approximately 100 g/mol | — |
| Solubility | very soluble in water, giving a strongly acidic solution | — |
| Moisture behaviour | hygroscopic; flake picks up moisture and cakes once a container is left open | — |
| Assay basis | quoted as % CrO3 for the selected grade, with sulphate, chloride and iron limits set by the plating, anodising or process specification | — |
Chromic Acid applications
Safety and handling
Keep the container closed in a cool, dry, well-ventilated store, separated from combustible material, organic matter, reducing agents and incompatible chemicals. The flake is hygroscopic and a strong oxidiser, so keep it dry, control dust, avoid skin and eye contact and work to the safety information issued for the grade quoted. Supply is subject to applicable requirements.
Common questions about chromic acid
Is chromic acid the same as chromium trioxide?
Yes, in trade usage. The solid ordered as chromic acid is chromium trioxide, CrO3, CAS 1333-82-0, while chromic acid strictly names H2CrO4 (CAS 7738-94-5), the species that forms once the flake dissolves in water. Documentation uses both names for the same flake.
Is chromic acid the same product as sodium dichromate or potassium dichromate?
No. The dichromate salts are distinct chemicals with their own specifications, appearance and process roles, and this page covers chromium trioxide flake only. Ask for the material you need by name so the correct one is quoted.
Which chromic acid grade suits hard chrome plating?
Hard chrome baths are normally made up from a plating grade where the CrO3 content is declared and sulphate, chloride and iron are held to stated limits, since those anions drive bath ratio, deposit hardness and throwing power. Send the bath specification with the enquiry.
Can chromic acid be supplied as a ready-mixed plating solution?
The traded article is the solid flake, and plating or anodising baths are usually made up on site by dissolving it to the working concentration. If a prepared solution is wanted instead, say so with the enquiry, together with the concentration and volume required, so the requirement can be reviewed.
How should chromic acid flake be stored and handled?
Store sealed in a cool, dry area away from combustible and organic material and away from reducing agents, since the flake is a strong oxidiser and draws moisture from the air. Control dust during charging, avoid skin and eye contact and follow the safety information issued with the grade quoted.
What details are needed for a chromic acid price enquiry?
Give the grade, the CrO3 assay basis, any impurity limits, the quantity and the delivery location. Adding the preferred pack format, documentation needs and the timing you are working to lets the quotation cover the whole requirement in one pass.