Cupric and cuprous are not typing variants of each other, and the difference matters more than any price gap on this page.
The short answer. On our published grades: copper sulphate pentahydrate 24-25% Cu, cupric chloride 98% min, cuprous chloride 97% min, copper oxide 97% min, EDTA Cu 14-15% Chelated Cu. Only the sulphate and the chelate are quoted as copper content; the other three are quoted as purity of the compound.
Cupric chloride and cuprous chloride are different compounds with different chemistry, different appearance and different handling. The names differ by two letters and they sit next to each other in any catalogue, which is exactly why orders get placed for the wrong one. On our pages cupric chloride is published at 98% min and cuprous chloride at 97% min, so the grade figures will not catch the mistake for you either.
If your specification names one of them, order it by full name and check the acknowledgement. If you are working from a process description rather than a specification, send us the description.
| Product | Formula | Grade published | Standard packing |
|---|---|---|---|
| Copper Sulphate Pentahydrate | CuSO₄·5H₂O | 24-25% Cu | 50 kg net, HDPE bag |
| Cupric Chloride | CuCl₂ | 98% min | 50 kg net, HDPE bag |
| Cuprous Chloride | CuCl | 97% min | 50 kg net, HDPE bag |
| Copper Oxide | CuO | 97% min | 50 kg net, HDPE bag |
| EDTA Cu (Copper) | C₁₀H₁₂CuN₂Na₂O₈ | 14-15% Chelated Cu | 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.
Three of these five are quoted as purity of the compound rather than as copper content, so they do not drop into a cost-per-kilogram-of-copper calculation without conversion. Rather than have you infer the element content from a formula, ask us: we will confirm it against the specification for the grade we would ship.
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.
Know what you need already? Send the grade, the quantity and the delivery location and we will quote against them.
Send the grade, the quantity and the delivery location and we will quote against them.