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Farmer holding white zinc sulphate granules over a green wheat field at sunrise
ZnSO₄·H₂O granules, Zn 33% min

Zinc sulphate for the world's farms

From one of the world's leading exporters of zinc sulphate: agriculture-grade granules made to a published specification for blenders, distributors and importers worldwide.

See agriculture gradeRequest a quote
  • Own manufacturing plantMade in India, tested in-house
  • 33% Zn granulesAgriculture grade, supplying now
  • COA with every dispatchTDS and SDS on request
  • Shipped worldwideBags, jumbo bags, full containers

Products by grade

One zinc sulphate line, released to four different specifications. Pick the grade that matches your use and we send the spec sheet, a sample and a quote.

Close-up of white zinc sulphate monohydrate granules

Agriculture grade

Zinc sulphate monohydrate granules, Zn 33% min, for soil application and fertilizer blending.

Supplying now
Steel parts lifted from a steaming galvanizing tank

Technical grade

For electroplating, textiles and water treatment.

Supplying now
White mineral powder in a scoop beside poultry feed pellets

Feed grade

Low heavy-metal zinc for premix and compound feed.

In qualification
White tablets and an unprinted sachet beside a beaker

Pharma grade

Targeting IP and USP monographs for zinc tablets and ORS kits.

In qualification
Blue chemical drums and IBC totes in a covered yard

Industrial acids

Nitric, phosphoric and glacial acetic acid, technical grade.

Supplying now
Open jute sacks of wheat, mustard seed and chickpeas

Agri commodities

Grains, pulses, oilseeds and spices sourced for export.

On enquiry
Farmer scattering white granules onto soil between young wheat plants
Granules and fine powder side by side in glass dishes Green paddy field at sunrise
Supplying now

Agriculture grade zinc sulphate monohydrate

Hard, free-flowing white granules for broadcasting, drilling with fertilizer and bulk blending.

Chemical nameZinc sulphate monohydrate, ZnSO₄·H₂O
Zinc (Zn)33% minimum
FormGranules; granule size agreed per order. Powder on request.
StandardIS 15848:2025 and Fertiliser Control Order 1985
ImpuritiesPb, Cd, Fe, Cu, Mg and water-insolubles within FCO limits
pH (5% solution)4.0 minimum
Packing25 kg and 50 kg bags, jumbo bags
CAS / HS code7446-19-7 / 2833 29

Who buys it: fertilizer manufacturers and blenders, micronutrient producers, importers, distributors and co-operatives.

Ask for a quote and sample
Galvanizing workshop with steaming dip tank
Supplying now

Technical grade

For manufacturers who need consistent zinc content and an agreed impurity profile.

AssayZnSO₄·H₂O 98% typical
SpecificationAssay and impurity limits agreed per customer
DocumentsCOA per batch, TDS and SDS
  • Galvanizing and electroplating
  • Viscose rayon, textiles and dyeing
  • Water treatment and chemical processing
Ask for a quote
Mineral powder beside poultry feed in a feed mill
Dairy cows feeding at a troughSample jars of granules and powder on a lab bench
In qualification

Feed grade

A low heavy-metal zinc source for poultry, cattle and aqua feed premixes.

Target standardFCC and EU feed-additive limits, as applicable
Zinc (Zn)35% minimum
Lead (Pb)10 ppm maximum
Cadmium (Cd)10 ppm maximum
Arsenic (As)1 ppm maximum
Mercury (Hg)1 ppm maximum

Target specification. We sell material as feed grade only once released batches conform and the applicable approvals are in place. Development samples are available now.

Request a development sample
White dispersible tablets, sachet and beaker on a lab bench
In qualification

Pharma grade

Zinc sulphate monohydrate is the active ingredient in the 20 mg dispersible zinc tablets given with ORS for childhood diarrhoea. We are qualifying our line against the Indian and US pharmacopoeias.

Target standardIP and USP zinc sulfate monohydrate monographs
Assay99.0 to 100.5%
Heavy metalsPb 3 ppm, Cd 1 ppm, As 1 ppm, Hg 0.1 ppm maximum; Se 0.003% maximum

We will only call material IP or USP grade once released batches conform to the monograph and the manufacturing licence is in place. Formulators are welcome to audit the programme.

Talk to us about the programme
Blue HDPE drums and IBC totes
Supplying now

Industrial acids

Supplied against customer specification to manufacturers in India and overseas.

Nitric acidTechnical grade, about 99%
CAS 7697-37-2
Phosphoric acidTechnical grade
CAS 7664-38-2
Glacial acetic acidAbout 98%
CAS 64-19-7

Drums, IBCs and tankers. Ask for the current TDS and SDS.

Ask for a quote

How it is made

A five-stage sulphuric-acid route at our own plant. Metal impurities are removed chemically before crystallization, which is what lets one line serve both agricultural and higher-purity grades.

Acid leaching

Zinc-bearing raw material is fed into dilute sulphuric acid under agitation to make a zinc sulphate solution.

Filtration

A filter press removes insoluble residue. Most lead stays in this cake, which goes for authorised disposal.

Purification

Hydrogen peroxide drops out iron; zinc dust cements out cadmium and copper. Both are filtered off.

Crystallization

The clean liquor is concentrated and cooled under stirring to grow zinc sulphate crystals.

Drying and packing

Crystals are centrifuged, dried to the monohydrate, granulated or screened, and packed by grade.

Zinc sourceZinc ash, dross, oxide or metal, bought against a written spec with lot COAs
Sulphuric acidDilute or concentrated, for leaching
Purifying agentsHydrogen peroxide and zinc powder
WaterDilution, washing and solution make-up
Row of sample jars with granules and powder on a lab bench

Quality you can check

Every batch is tested, numbered and documented, and the paperwork travels with the material.

Batch testing

Zinc content, assay, pH, water-insolubles and heavy metals are checked on every batch before release.

Certificate of analysis

Each dispatch carries a batch-specific COA. TDS and SDS are available for every product.

Raw-material traceability

Finished-goods COAs are filed with the raw-material COAs, so heavy-metal provenance can be shown to any buyer.

Samples first

Pre-shipment samples for buyer qualification before the first commercial order.

Plant visits and audits

Buyers and their inspectors are welcome to audit the process, laboratory and packing line.

Clean process

Impurities are removed chemically before crystallization, not blended down afterwards.

Export and trade

Jonakshi Global is the group's export and trading arm, and one of the world's leading exporters of zinc sulphate and Indian agricultural commodities. It ships our own zinc sulphate, sources agricultural commodities and chemicals to buyer specification, and handles inspection and export documents end to end.

Where we ship

Africa, South and South-East Asia, the Middle East and beyond, by container from India's west-coast ports.

Documents

COA, SDS, technical data sheet, certificate of origin, HS classification support and destination paperwork. FOB, CFR or CIF as agreed.

Sourcing and import

Zinc ash and dross from authorised processors in India and abroad, on assay-linked contracts with pre-shipment inspection.

Jute sacks of wheat, mustard seed and chickpeas at a grain market

Agricultural commodities

India is one of the world's largest producers of wheat, pulses, oilseeds and seed spices. We source to your grade, arrange independent inspection and prepare the export documents.

  • Wheat and coarse grains
  • Pulses and chickpeas
  • Mustard and other oilseeds
  • Cumin, coriander and seed spices
  • Onion and potato
  • Other produce on request
Send your requirement

Run by people who already run plants

Jonakshi Industries is the group. Its subsidiary, Jonakshi Chemicals Pvt. Ltd., was incorporated in March 2022, owns the plant at Girdharpura, holds the licences and signs the contracts. The promoters bring long experience in mining, chemicals and pharmaceuticals.

The plant sits in one of India's most intensively farmed regions, alongside established fertilizer industry and on the main rail and road corridors to the ports. That gives us raw materials, logistics and farm customers within easy reach.

Group
Jonakshi Industries
Operating company
Jonakshi Chemicals Private Limited
Incorporated
March 2022, India
Plant
Kota, Rajasthan, India
Production
Commercial zinc sulphate from 2026

Leadership

Mahesh GuptaDirector25+ years in pharmaceuticals and chemicals; bentonite mining
CA Prakhar MaheshwariDirectorChartered accountant; banking, credit and finance
Devendra NagarDirectorCivil engineer; mining, crushing and renewable-energy projects in Rajasthan and Maharashtra
Manoj SharmaDirector15+ years in stone crushing, mining and materials trading
V. S. BhatnagarDirector40 years in the chemicals industry, including fertilizer and zinc sulphate operations at DCM Shriram
Kartik LakhotiyaScientific AdvisorScientist at Cleveland Clinic; guides the pharma-grade programme and quality systems

Request a quote

Tell us the product, grade, quantity and destination. We reply with a quotation, specification and sample arrangements.

Email

[email protected]
For domestic and export enquiries

Plant

Khasra No. 199/197 (new) & 46 part (old)
Village Girdharpura, Choma Maliyan
Tehsil Digod, District Kota
Rajasthan, India

Hours

Monday to Saturday, 10:00 to 18:00 IST (UTC+5:30). We reply within one business day.