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Potassium Chloride Supplier & Exporter — Laboratory and MOP Fertilizer Grade

KCl Potassium Chloride · Lab and MOP Grades

Two grades of potassium chloride: a laboratory and pharmaceutical grade assaying 99–100.5% with iodide below 50 ppm, and muriate of potash at 59.09% K₂O for fertilizer blending and as a shale inhibitor in water-based drilling fluid. Both shipped with a batch-specific Certificate of Analysis.

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Bulk potassium chloride (KCl) — muriate of potash fertilizer and laboratory grade crystals — B2B export supplier Raivaco Assay ≥ 99%

Supply capability at a glance

99 – 100.5%

Assay, laboratory grade

59.09%

K₂O, MOP grade

≤ 50 ppm

Iodide, laboratory grade

Per batch

Certificate of Analysis

Physical Properties

Formula

KCl

Molecular Weight

74.55 g/mol

CAS No.

7447-40-7

Melting Point

770 °C

Solubility (20°C)

340 g/L

Density (20°C)

1.98 g/cm³

Synonyms: Potassium Chloride, Muriate of Potash, MOP, Sylvite, Potassium Salt · EINECS 231-211-8 · E508 · HS 3105.10 · White to pink odourless crystalline solid; boiling point 1420 °C. Store below +30 °C.

Grades & Chemical Analysis

Two grades for two markets. The laboratory grade is bought on assay and trace impurities; MOP is bought on potassium oxide content, which is how every fertilizer contract in the world is written. Select a grade to view its full analysis.

MOP is contracted on potassium oxide content, not on chloride assay — 59.09% K₂O corresponds to roughly 93.6% KCl at the standard 0.6317 conversion factor, which is consistent with the certified chloride figure. A batch-specific CoA is issued per shipment.

Bespoke Supply

Need granular MOP, or a drilling-fluid specification?

If none of the grades above matches your target chemistry, fineness, or packaging, tell us your requirements — we produce custom grades to your exact specification.

Request a Custom Grade

Applications

Potassium chloride is the world’s potash fertilizer and, at a different purity, an electrolyte and a shale inhibitor.

Potash Fertilizer

Direct-applied MOP, the source of over 90% of world potassium fertilizer.

NPK Blending

Potassium component in bulk-blended and compound fertilizers.

Drilling Fluid Inhibitor

Potassium ion exchange stabilises shale and marl formations.

Pharmaceutical

Potassium supplements, electrolyte and infusion solutions.

Food & Salt Substitute

E508 in low-sodium salt and food processing.

Water Treatment

Regeneration of ion-exchange resins and potassium-based softening.

Potassium Chemicals

Feedstock for potassium hydroxide, carbonate and sulphate.

Reference Electrodes

Saturated KCl bridge solution in pH and reference electrodes.

Metallurgy & Fluxes

Component of aluminium and magnesium salt fluxes.

Packaging, Logistics & Trading Terms

How we bag, certify and ship potassium chloride. Terms can be adapted by agreement — tell us what your operation needs.

Minimum Order Quantity
MOP: 1 × 20 ft container (approx. 25 MT) bagged, 500 MT minimum for bulk vessel. Laboratory grade from 1 kg upwards. Trial quantities available.
Packaging
MOP in 50 kg PP bags with liner, 1–1.5 MT jumbo bags, or bulk. Laboratory grade in 1 kg, 5 kg and 10 kg polyethylene containers.
Incoterms & Loading Ports
EXW, FOB, CFR and CIF (Incoterms® 2020). Standard loading at Bandar Abbas and Bandar Imam Khomeini; other ports by arrangement.
Quality Certification
Batch-specific CoA with every shipment. MOP is certified on K₂O, KCl, chloride and sodium; laboratory grade on assay, iodide, bromide, loss on drying and identification. SGS / Bureau Veritas inspection at buyer’s cost.
Lead Time
7–14 days for standard grades after order confirmation; 15–25 days for custom-milled or specially packed material.
Storage & Handling
Store below +30 °C in a dry, covered warehouse on pallets. Potassium chloride is hygroscopic and cakes readily — MOP shipped to a humid destination should carry a moisture-barrier liner, and reagent containers should be resealed between uses. May be irritant; keep away from eyes and broken skin.

Certificate of Analysis

A batch-specific CoA is issued with every shipment. Third-party inspection by SGS, Bureau Veritas or an inspector of your choice can be arranged at the buyer’s cost.

Ready to quote

Send us your grade, tonnage, destination port and packaging and we will return a firm FOB/CFR/CIF price with lead time.

Request a Potassium Chloride Quote

Potassium Chloride — Frequently Asked Questions

Why is MOP sold on K₂O rather than on KCl?
Convention, and it makes blending arithmetic work. Every fertilizer grade in the world is written as N-P-K where the K is expressed as potassium oxide, so potash is contracted the same way. Our MOP certifies 59.09% K₂O with a tolerance of 0.5%, which at the standard 0.6317 conversion factor is about 93.6% KCl — consistent with the 44.16% chloride on the same certificate.
How does potassium chloride stabilise shale in drilling mud?
By cation exchange. Shale and marl clays carry loosely held monovalent cations that swap readily with others. When KCl is in the mud, the potassium ion replaces them at the clay surface, and because potassium hydrates far less than sodium the clay stays put instead of swelling and sloughing into the hole. That is why KCl is the standard inhibitor in water-based mud through reactive formations.
Is the laboratory grade suitable for pharmaceutical use?
The specification is written to pharmacopoeial limits: assay 99–100.5%, iodide 50 ppm maximum, bromide 0.1% maximum, loss on drying 1% maximum at 130 °C, with identification, acidity and alkalinity, calcium, magnesium and sodium all conforming. Elemental impurities and residual solvents are reported per lot. Tell us which pharmacopoeia you work to and we will confirm conformity before shipment.
Can MOP be used on every crop?
Not without thought. Potassium chloride is the cheapest potassium per unit and suits most field crops, but the chloride ion is unwelcome on chloride-sensitive crops such as tobacco, some potatoes for fresh sale, and certain fruit. In those cases potassium sulphate is the usual alternative — ask and we will quote it.
How should potassium chloride be stored?
Below +30 °C in a dry, covered warehouse, on pallets and off the floor. KCl is hygroscopic and cakes into a solid mass if bags take on moisture, so humid destinations should specify the moisture-barrier liner. Laboratory containers should be resealed between uses to hold the loss-on-drying figure.
What is the minimum order quantity?
For MOP, one 20 ft container of approximately 25 MT bagged, with bulk vessel shipments from 500 MT. Laboratory grade is available from 1 kg. Trial quantities can be arranged for qualification before a full order.

Related Products

Urea Granular urea at 46% nitrogen — the N in an NPK blend. Barite (BaSO₄) API 13A weighting agent for the same water-based drilling fluid. Sodium Chloride (NaCl) Extra pure and laboratory reagent grade NaCl.