TCS Industries Limited (China-sourced API supplier) supplies Zinc Sulfate –- Zinc Supplement for Pharma, Feed & Agriculture CAS 7733-02-0 for pharmaceutical B2B procurement — COA, MSDS, and technical documentation available on request.
> Overview
| Product Name | Zinc Sulfate –- Zinc Supplement for Pharma, Feed & Agriculture |
|---|---|
| Structural Formula |  |
| CAS Number | 7733-02-0 |
| Molecular Formula | O4SZn |
| Molecular Weight | 161.4 g/mol |
| InChIKey | NWONKYPBYAMBJT-UHFFFAOYSA-L |
| SMILES | Available on request where applicable |
| Appearance | White crystalline powder or granules |
| Purity / Grade | By agreed specification and batch COA |
| Storage | Keep tightly closed in a cool, dry, well-ventilated place |
Zinc Sulfate (CAS 7733-02-0) is an inorganic zinc salt with the formula ZnSO₄. The standard commercial forms are the heptahydrate (ZnSO₄·7H₂O, CAS 7446-20-0, MW 287.56) and monohydrate (ZnSO₄·H₂O, CAS 7446-19-7, MW 179.47). Zinc sulfate is the primary source of supplemental zinc in pharmaceutical, nutritional, agricultural and industrial applications, owing to its high water solubility and bioavailability.
TCS Industries Limited, a Hong Kong-based trading and sourcing company, supplies Zinc Sulfate in pharmaceutical, food, feed, fertilizer and technical grades.
> Applications
Zinc supplementation in pharmaceutical and nutritional products
Zinc sulfate is used in oral tablets, capsules, syrups and ORS (oral rehydration salts) for treatment and prevention of zinc deficiency. The WHO recommends zinc supplementation (10–20 mg/day elemental zinc) for management of acute diarrhea in children. Zinc sulfate eye drops (0.25%) are used for mild conjunctival irritation. Pharmaceutical-grade material meets USP or Ph.Eur. monograph specifications. Prasad (BMJ, 2003, 326:409–410) reviewed the clinical significance of zinc deficiency and supplementation.
Animal feed zinc source and agricultural micronutrient
Zinc sulfate monohydrate is a common zinc source in animal feed premixes, providing 35.5% Zn. Feed-grade material must meet EU Regulation 1831/2003 (feed additives) or equivalent national standards. In agriculture, zinc sulfate is applied as a foliar spray (0.5% solution) or soil amendment for zinc-deficient soils, particularly in alkaline and calcareous conditions where zinc availability is reduced.
> Sourcing & Supply
TCS Industries Limited supports development, qualification and commercial purchasing discussions for Zinc Sulfate –- Zinc Supplement for Pharma, Feed & Agriculture with buyers in South America, Europe, the United Kingdom, Australia, New Zealand, Mexico and Canada.
- Evaluation and commercial quantities: 25 kg bags for qualification; pallet and bulk for production. Monohydrate, heptahydrate, and anhydrous forms in pharma, food, feed, fertilizer and technical grades.
- Pallet quantities and production campaigns: repeat supply is coordinated against packaging, lead time, annual demand and destination-market import requirements.
> Quality & Documentation
Key specification parameters depend on grade and hydration form. Pharmaceutical grade (USP/Ph.Eur.): assay (≥99.0% ZnSO₄ on dried basis), heavy metals (Pb ≤10 ppm, Cd ≤2 ppm, As ≤1 ppm), iron, chloride, alkaline earth metals, and water content appropriate to the hydration form. Food grade: per FCC or EU specifications (E-number not assigned; permitted as mineral supplement per Directive 2002/46/EC). Feed grade: Zn content (≥35% for monohydrate), Pb, Cd, As, Hg per Regulation 1831/2003. COA and MSDS are standard.
> Packaging
Zinc Sulfate heptahydrate effloresces (loses water) in dry air and is hygroscopic in humid conditions. Monohydrate is more stable. Standard packaging includes 25 kg woven PP bags (feed/fertilizer grade), 25 kg fibre drums or paper bags (pharma/food grade), and palletized units. Store in a dry, cool environment. Labels and documents are checked before dispatch.
> Pricing & MOQ
Pricing is quoted by specification, packaging and destination. Common commercial discussions use 25 kg bag/drum formats, pallet quantities and production-campaign planning; smaller samples may be reviewed for qualified formulation teams.
> Regulatory & Compounding Context
Zinc Sulfate is monographed in USP, BP and Ph.Eur. (Zinci sulfas monohydricus / heptahydricus). On the WHO Model List of Essential Medicines (zinc sulfate oral, for diarrhea management). Listed in the FDA IID. Permitted as a mineral source in food supplements per EU Directive 2002/46/EC. Authorized as a feed additive in the EU (Regulation 1831/2003). No special import permits for standard grades.
> Alias Index
- Chemical name: Zinc sulfate
- CAS Number: 7733-02-0 (anhydrous); 7446-19-7 (monohydrate); 7446-20-0 (heptahydrate)
- Formula: ZnSO₄ (anhydrous, MW 161.47); ZnSO₄·H₂O (monohydrate, MW 179.47); ZnSO₄·7H₂O (heptahydrate, MW 287.56)
- Common names: White vitriol (heptahydrate), Zinc vitriol, Zinkosite (mineral)
- Pharmacopoeial names: Zinci sulfas monohydricus / heptahydricus (Ph.Eur.)
- InChIKey: NWONKYPBYAMBER-UHFFFAOYSA-L
- Commercial request terms: zinc sulfate USP, ZnSO4 feed grade, zinc fertilizer, zinc supplement API, TCS Industries Limited
> FAQ
What forms of Zinc Sulfate does TCS supply?
TCS sources anhydrous ZnSO₄, monohydrate (ZnSO₄·H₂O) and heptahydrate (ZnSO₄·7H₂O) in pharmaceutical (USP/Ph.Eur.), food supplement, feed and technical grades. Monohydrate is the standard feed and fertilizer form. Specify the hydration form and grade at inquiry.
What documents are available for Zinc Sulfate –- Zinc Supplement for Pharma, Feed & Agriculture orders?
COA and MSDS are standard for commercial discussions. COO, packing list, invoice and other import-support documents can be arranged according to order scope.
Can TCS Industries Limited support Zinc Sulfate –- Zinc Supplement for Pharma, Feed & Agriculture supply to South America?
Yes. We support B2B buyers in Argentina, Colombia, Chile, Peru, Ecuador, Uruguay, Bolivia, Brazil, Paraguay, Venezuela, Guyana and Suriname, subject to route and document review.
Do you support Europe, the United Kingdom, Australia, New Zealand, Mexico and Canada?
Yes. These destinations can be reviewed for project supply, import documents, packaging and logistics planning before quotation.
Is Zinc Sulfate on the WHO Essential Medicines List?
Yes. Zinc sulfate oral preparations are on the WHO Model List of Essential Medicines for management of acute diarrhea in children (10–20 mg elemental zinc per day for 10–14 days). This makes pharmaceutical-grade zinc sulfate a priority product for essential medicines programs.
What is the zinc content of different Zinc Sulfate forms?
Anhydrous ZnSO₄: 40.5% Zn. Monohydrate: 35.5% Zn. Heptahydrate: 22.7% Zn. Feed and fertilizer specifications typically report zinc content. Pharmaceutical specifications report assay as % ZnSO₄ on dried basis. Confirm which reporting basis is required.
Can you arrange samples before commercial purchasing?
Samples or evaluation quantities may be reviewed for qualified buyers after target specification, application and destination-market requirements are clarified.
How is Zinc Sulfate –- Zinc Supplement for Pharma, Feed & Agriculture packaged for export?
Packaging is confirmed by quantity and material properties. Typical options include foil bags, HDPE containers, fibre drums, 25 kg bags or palletized export packaging.
Can buyer-defined specifications be reviewed?
Yes. Send the specification, methods, impurity limits and required documents. TCS can review feasibility before confirming quotation and lead time.
What payment terms are normally used?
Standard payment is 100% T/T before dispatch unless a different arrangement has been approved for an established commercial account.
What lead time should buyers expect?
Lead time depends on stock, batch size, document scope and destination. Available stock can move faster; made-to-order or pallet programs require longer planning.
What heavy metal limits apply to pharmaceutical-grade Zinc Sulfate?
USP and Ph.Eur. specify limits for lead (≤10 ppm), cadmium (varies by monograph), arsenic (≤1 ppm), iron, and alkaline earth metals. Feed-grade material follows EU Regulation 1831/2003 limits which differ. Always specify the target grade and applicable monograph at inquiry to ensure correct sourcing.
Last reviewed: June 2026
Evaluation and research orders (≤10 kg) are shipped with COA, MSDS, and certificate of origin. Bulk commercial orders (>10 kg) qualify for volume pricing with a full technical documentation package available on request.
> Request a Quote
If your team already has a target application, estimated quantity, destination market, or documentation requirements, send those details so the commercial response can be prepared more efficiently.