Taskon Industries manufactures six zinc products. They are quoted on two different bases, which is the first thing to sort out before any of them can be compared.
The short answer. Two of these are quoted as element content — zinc sulphate monohydrate at 33% Zn, heptahydrate at 21% Zn, zinc nitrate at 22% Zn, 10% N and EDTA Zn at 12-14% Chelated Zn. Two are quoted as purity of the compound: zinc oxide at 99% min and zinc chloride at 95% min. Those are different kinds of number and cannot be lined up in one column.
A grade like ‘33% Zn’ tells you how much of the bag is zinc. A grade like ‘99% min’ tells you how much of the bag is zinc oxide. Both are honest statements; they answer different questions. If you are costing zinc, only the first kind goes straight into the arithmetic.
Where a page publishes a purity figure and you need the element content for a calculation, ask us rather than convert it yourself from a formula: we will confirm it against the specification for the grade we would actually ship you.
| Product | Formula | Grade published | Standard packing |
|---|---|---|---|
| Zinc Sulphate Monohydrate | ZnSO₄·H₂O | 33% Zn | 50 kg net, HDPE bag |
| Zinc Sulphate Heptahydrate | ZnSO₄·7H₂O | 21% Zn | 50 kg net, HDPE bag |
| Zinc Oxide | ZnO | 99% min | 50 kg net, HDPE bag |
| Zinc Chloride | ZnCl₂ | 95% min | 50 kg net, HDPE bag |
| Zinc Nitrate | Zn(NO₃)₂ | 22% Zn, 10% N | 50 kg net, HDPE bag |
| EDTA Zn (Zinc) | C₁₀H₁₂N₂Na₂O₈Zn | 12-14% Chelated Zn | 50 kg net, HDPE bag |
Every grade in this table is the figure published on that product’s own page on this site. Nothing is estimated. The guaranteed analysis on the product page and the batch certificate of analysis govern any supply.
EDTA Zn, at 12-14% chelated zinc, carries far less zinc per kilogram than either sulphate. That is inherent to what a chelate is, and it is discussed at length in EDTA chelated micronutrients vs sulphate salts. It is a different kind of product rather than a stronger or weaker version of the same one.
For the two zinc sulphates specifically, see zinc sulphate 33 vs 21, which goes into the monohydrate and heptahydrate question in detail.
Where two products carry the same element at different strengths, the price per kilogram of bag is not a comparison. Divide the delivered price per kilogram by the element fraction and you get the cost per kilogram of the thing you are actually buying. That is the only basis on which grades of different strength can be set against each other.
Our nutrient cost comparison calculator does that arithmetic on any two products in our range and prints its working, and the element content calculator converts between kilograms of product and kilograms of the element. Freight follows the same logic: moving a weaker grade means paying to move more material that is not the element.
That is decided by your process, and by things we cannot see from here: how the product is applied, what it is blended with, what has to dissolve and how fast, the specification you or your customer must meet, and how far the material travels. Any supplier who answers that question without asking about your process is guessing.
We manufacture the alternatives set out above, so we have no reason to steer you toward the dearer one. Describe the application and we will tell you what we would send and why, including when the cheaper grade is the right answer.
Four things let us price these products without a round of questions: the grade, the quantity, the delivery location, and any specification you have to meet. Send those and we come back with a price, the packing, and the documents that travel with the consignment. There is more detail on what to send us for a quote.
Not sure which grade suits your process? Describe the application and we will tell you what we would supply, and why.
Send the grade, the quantity and the delivery location and we will quote against them.