Chromic Acid (Chromium Trioxide)
CrO3
1333-82-0
215-607-8
| # | Parameter | Value |
|---|---|---|
| 1 | Appearance | Dark red granular solid |
| 2 | Odor | Odorless |
| 3 | Solubility | Freely soluble in water |
| 4 | Melting Point | 197°C (decomposes) |
| 5 | Molecular Weight | 99.99 g/mol |
| 6 | Density | ~2.70 g/cm³ |
| 7 | Purity | ≥ 99.7% |
In metal finishing, the treatment stage can determine whether a part works reliably for years or starts showing problems after a short time. A surface may look clean after processing, but poor preparation can later lead to corrosion, weak adhesion, or coating defects. This is why Chromic Acid is still used in Brazil in industrial processes where manufacturers need a controlled and repeatable surface result.
For aerospace, automotive parts, heavy equipment, and metalworking, the same treatment has to perform consistently from batch to batch. Chromic Acid helps manufacturers achieve this level of control when the process is managed correctly and the material is supplied with stable quality.
Chromic Acid is commonly obtained by mixing Chromic Anhydride with water. The solution produced in this way is highly active and is used in operations connected with metal cleaning, surface activation, and preparation before finishing. Its behavior is not fixed in every situation. It changes depending on concentration, temperature, storage, and the method used in production. On metal surfaces, Chromic Acid can remove residues and support the formation of an oxide layer that prepares the part for the next stage. This can be important before coating, bonding, electroplating, or passivation. In production, workers normally monitor the bath condition, because a small shift in concentration or treatment time can change the finish. Correct storage also matters, since the product must remain suitable for use and safe to handle during the whole supply cycle.
In Brazil, Chromic Acid is used in surface treatment operations where the result has to be accurate and repeatable. It is often found in processes related to electroplating, passivation, and the treatment of aluminum or steel components after initial processing. A common practical use is surface cleaning before another material is applied. Chromic Acid helps prepare the metal so paints, coatings, or bonding systems can attach more securely. This is especially important for parts used under pressure, vibration, heat, moisture, or chemical exposure. Aircraft components, automotive parts, industrial tools, and technical equipment are typical examples. Typical areas where Chromic Acid is used include: surface preparation before electroplating; creation of protective oxide layers; preparation of substrates for paints and coatings; final treatment stages in precision manufacturing. In each of these uses, the result depends on the way the process is managed. Time, concentration, temperature, and handling discipline all affect the final surface quality.
In Brazil, demand for Chromic Acid mainly comes from industries where surface treatment must be reliable, not just visually acceptable. Aerospace, automotive production, machinery, equipment manufacturing, and metalworking companies often depend on repeatable chemical processes. When a treated part has to work in difficult conditions, unstable surface quality can become a serious production risk. Because of this, choosing a Chromic Acid supplier in Brazil is not only a question of stock availability. Buyers usually pay attention to product consistency, packaging quality, transport safety, and documents that confirm the material can be used correctly. A small variation in the product may create delays, rework, or problems during treatment. Working with a dependable Chromic Acid distributor in Brazil helps companies keep the process under control and avoid unnecessary interruptions.
Chromic Acid pricing in Brazil is rarely based on the material alone. The final cost may change because of raw material availability, safety requirements for chromium-based chemicals, packaging type, delivery distance, and storage conditions. Since the product requires controlled handling, logistics can also influence the price. Companies that buy Chromic Acid in Brazil often prefer to plan purchases in advance. This makes it easier to organize delivery, control stock levels, and avoid production delays. For regular industrial use, long-term cooperation with one supplier is often more practical than searching for a new source for every order. Order volume, concentration, packaging format, and delivery schedule can all affect the final price. These details may seem small at first, but in real production they can influence both cost and process stability.
Chromic Acid requires careful handling due to its oxidizing and corrosive properties. Storage must comply with regulations for chromium-based chemicals — sealed containers, cool and dry conditions, away from incompatible materials. Personnel must use appropriate PPE including gloves, goggles, and acid-resistant clothing. The SDS must be consulted before use. Spills require immediate containment and proper disposal in accordance with local environmental regulations. Maintaining strict handling procedures helps protect both workers and production quality.
Chromic Acid remains important in industries where metal surfaces must be cleaned, oxidized, stabilized, or prepared for further treatment. Its value is especially clear in applications where durability, adhesion, and corrosion resistance matter over the long term. Foscote Group operates as a Chromic Acid supplier in Brazil. The company supports industrial clients with consistent product quality, controlled logistics, and reliable supply for technical applications.
It is primarily used in metal surface treatment, including cleaning, passivation, and preparation before coating or plating.
It is formed by dissolving chromic anhydride in water, creating a reactive oxidizing solution used in controlled applications.
It ensures clean, stable surfaces and improves adhesion and corrosion resistance in demanding environments.
Regulations, logistics, concentration, and supply chain conditions all contribute to the final cost.
It requires controlled handling due to its oxidizing nature, but standard industrial safety procedures make it manageable.
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