crystalline white powder. Fire and explosion safe.
| The content of basic substance, % | 98,02 |
| ZnO | 1,8 |
| SO4 | 0,009 |
| Fe | 0,0005 |
| Ba | 0,08 |
| Pb | 0,0005 |
Zinc chloride GOST 4529-78 is a loose white crystalline mass. This substance has a high hygroscopicity, which makes special requirements for storage and transportation. In concentrated aqueous solutions it is a strongly acidic medium that is used for etching various surfaces and as a relatively sparing substitute for concentrated acids.
It is very wide, but, in general, it is used in the following industries:
- Zinc chloride is an integral component for printing on calico. It plays a role in dressing the fabric before applying the paint.
- It is used for the manufacture of dental cement and photopolymers.
- It has pronounced fungicidal and antiseptic properties, which allows it to be used for impregnating wood to protect against pests and fungi.
- Most often it is used as a reagent for cleaning non-ferrous metals surfaces before soldering. It effectively removes any oxides.
- In the production of fiber fabrics of varying degrees of fiber fineness.
- When refining non-ferrous metal alloys, it is a substance that binds impurities.
- In the analysis of solid hydrocarbons, it is used for fractional analysis without direct isolation.
- One of the main components in salt household food elements.
Zinc chloride absorbs moisture very actively, including from the air, therefore polypropylene or paper bags with additional hermetic polyethylene liner are used for storage and transportation.
heating molten zinc in a stream of chlorine, dissolving zinc or zinc oxide in hydrochloric acid with further evaporation, and other methods.
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in the textile and engineering industries, is used in the preparation of an electrolyte for dry batteries and electroplating baths in electroplating, flux for hot dip galvanizing, tinning, Lead plating; fluxes for hand and machine soldering; in the production of fiber, for antiseptirovaniya wood, as an additive in rubber vulcanization, as a solvent for cellulose cord regeneration of rubber, in chemical synthesis as a dehydrating agent and catalyst.
Yes, these are names for the same substance with the formula ZnCl₂. The international designation Zinc chloride 98% may also appear in documents. When purchasing, it is important to check not only the name but also GOST 4529-78, the mass fraction of the main substance, ZnO content, sulfates, iron, barium, lead and the batch’s appearance. This reduces the risk of an ordering mistake and helps accurately match the raw material to the enterprise’s internal specification.
Zinc chloride is hygroscopic, so it can actively absorb water vapour from the air. If storage conditions are violated, the powder can cake, change its free-flowing quality and become harder to dose when preparing working solutions. Opened packaging should be resealed immediately, and raw material showing signs of wetting should be checked before being transferred into use.
When receiving zinc chloride 98%, the integrity of the bags, labelling, quality certificate, production date and the batch’s compliance with GOST 4529-78 are checked. Laboratory control focuses on the content of ZnCl₂, ZnO, sulfates, iron, barium and lead. Visually, the product should be a white crystalline powder, a slight yellowish tint is permissible, but there should be no wetting, contamination, foreign inclusions or dense lumps. In case of deviations, the batch should be additionally checked.
Zinc chloride 98% is stored in dry, ventilated, unheated rooms, in sealed factory packaging and separately from moisture, food raw materials, feed, alkalis and incompatible materials. Bags are placed on pallets, avoiding contact with a wet floor, packaging damage and powder contamination. Since the product is classified as an ADR class 8 hazardous substance, the storage area must have restricted access, labelling and conditions for safe personnel work. For a wholesale batch, preserving the quality certificate and traceability are important.
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