crystals from light orange to dark red color
does not cake
non-flammable, explosion- and fire-safe.
When in contact with combustible products, it can lead to spontaneous combustion.
by covered transport
in dry unheated warehouse premises
| Indicator | Premium grade | Grade 1 |
| Mass fraction of sodium dichromate, %, not less than | 98.9 | 98.2 |
| Mass fraction calculated as chromic anhydride (CrO3), %, not less than | 75.5 | 75.0 |
| Mass fraction of sulfates calculated as SO4–2, %, not more than | 0.1 | 0.2 |
| Mass fraction of chlorides calculated as Cl–1, %, not more than | 0.2 | 0.4 |
| Mass fraction of water-insoluble residue, %, not more than | 0.01 | 0.02 |
| Mass fraction of iron (Fe+2), %, not more than | 0.001 | 0.003 |
| pH of aqueous solution | Not below 3.5 | |
Sodium dichromate meeting the requirements is a crystalline substance of orange-red color with pronounced antiseptic and oxidizing properties. This chemical reagent is widely used in various industries, especially for protecting wooden structures from biological decay. The material is offered in convenient packaging — from 25 kg bags to large 75 kg drums wholesale, making it accessible for industrial needs. Thanks to its versatility and proven effectiveness as a wood antiseptic, sodium dichromate remains a popular solution for professional tasks.
GOST 2651-78 sets strict technical requirements for the production and quality of sodium dichromate, defining norms for the content of the main substance and permissible impurities. This interstate standard guarantees the stability of the chemical and physical properties of the product, which is especially important for its use in critical technological processes. Compliance with GOST 2651-78 confirms that sodium dichromate has the necessary oxidizing characteristics and meets industrial safety requirements.
Sodium dichromate is obtained by multi-stage processing of chromite ores followed by oxidation and crystallization. The technological process includes treating the raw material with sulfuric acid under strictly controlled temperature conditions, which ensures a product with a high content of the main substance. Compliance with the approved production technology guarantees stable product quality, confirmed by certificates of conformity.
Sodium dichromate plays an important role in various industrial processes:
Each of these applications requires strict compliance with technological regulations and safety measures when working with this chemical compound.
Sodium dichromate per GOST 2651-78 is a crystalline product with a regulated mass fraction of the main substance and impurity control. When purchasing, it is important to check the grade, the sodium dichromate content, the figure calculated as chromic anhydride, the mass fraction of sulfates, chlorides, iron and water-insoluble residue. For an enterprise, the GOST is not a formality: it helps match the batch to internal specifications, incoming inspection requirements and the stability of the subsequent process.
The pH of an aqueous solution of sodium dichromate depends on the concentration, water quality and the actual composition of the batch. The product specification usually states a minimum permissible pH value, which is checked during incoming inspection. It is not advisable to rely only on reference data: before putting a batch into use, it is better to check a solution of the required concentration in the enterprise’s laboratory.
Sodium dichromate is stored in a dry, unheated warehouse, in sealed factory packaging, separately from moisture, organic substances, flammable materials and incompatible reagents. Although the product itself does not burn, on contact with flammable materials it can intensify hazardous reactions, so the storage area must be organised taking into account the substance’s oxidising properties. For a wholesale batch it is important to preserve labelling, quality certificate, the integrity of bags or drums and traceability from receipt through to transfer into production.
Sodium dichromate is classified among substances requiring strict personnel protection measures. When decanting, dosing and preparing solutions, chemically resistant gloves, safety goggles or a face shield, protective clothing, a respirator and effective ventilation are used. Dust or solution must not be allowed to contact the skin, eyes or respiratory tract. If spilled, the product is collected dry into a suitable container, preventing contamination of work areas, effluents and materials with which undesirable reactions are possible.
Every minute matters so your production doesn't stand idle. That's why we've built our logistics so that ordering and receiving our reagents is easy, and delivery times are predictable.
We deliver across Russia. We've built our processes so that distance is not an obstacle to a fast delivery.
Choosing a carrier: We work with trusted transport companies. Choose the one you trust — we will ship your cargo with it.
To your warehouse or pickup: We will deliver the batch directly to your warehouse. Or, if it's more convenient, pick it up yourself from ours.
Speed: In most regions, delivery takes from 1 to 7 business days. Need it faster? We can discuss urgent options.
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