Primary standard
Standardising sodium thiosulphate and other titrants.
Also known as Potassium iodate AR
Potassium iodate, minimum 99.5%, a primary standard for iodometry and an iodine source for salt.
Potassium Iodate is a white crystalline oxidising salt.
Its stability makes it a primary standard for standardising thiosulphate solutions, and it is the most common iodine source for iodised salt.
Every batch is released against these limits. Ask for the specification sheet with your quote.
| # | Test | Specification |
|---|---|---|
| 01 | Appearance (colour) | White |
| 02 | Appearance (form) | Crystalline powder |
| 03 | Identification | Complies |
| 04 | pH (5% in water) | 5 to 8 |
| 05 | Chloride, chlorate, bromide and bromate (as Cl) | Not more than 0.02% |
| 06 | Iodide (I) | Not more than 0.002% |
| 07 | Sulphate (SO₄) | Not more than 0.006% |
| 08 | Heavy metals (as Pb) | Not more than 0.0006% |
| 09 | Iron (Fe) | Not more than 0.001% |
| 10 | Sodium (Na) | Not more than 0.005% |
| 11 | Loss on drying (130 °C) | Not more than 0.05% |
| 12 | Assay | Not less than 99.5% |
Standardising sodium thiosulphate and other titrants.
The iodine source in iodised salt programmes.
An oxidant in analytical methods.
Every container carries the product name, batch number, dates and hazard labels. Other pack sizes are available on request.
Read the MSDS for full hazard, first-aid and disposal information.
Ask for any of these and we will email them with your quote.
250 g, 500 g and 1 kg packs as standard. Tell us if you need a different size or a repeat schedule.
Send your specification with your enquiry. Our team will confirm which limits we can meet before you order.
Yes. We hold an Import Export Code and supply both domestic and export buyers. Mention the destination country in your enquiry so we can quote the right packing and documents.
Tell us the quantity, pack size and destination. We will confirm price, availability and lead time, and send the documents you need.