Plan a trial for your application
Reactive dyeing of cellulose
Run a salt concentration series with the same fabric and dye.
Salt dissolution and recirculation
Measure dissolution, filter residue and holding-tank deposits.
Purchase specifications and incoming inspection
Review these properties when selecting and inspecting incoming material. Example figures refer to the cited grade or source. Confirm the offered specification, packaging and lead time in the quotation. K+S · Industrial salt for dyeing and finishing ↗
| Property | Unit | Published or agreed specification | Test conditions and checks |
|---|---|---|---|
| Sodium chloride assay | % by mass | Agree for the grade and end use | State dry or as-received basis. |
| Calcium and magnesium impurities | mg/kg | Agree for the grade and end use | State whether the result is an individual concentration or a hardness equivalent. |
| Water-insoluble matter | % by mass | Agree for the grade and end use | Keep sample mass, water temperature and filter material constant. |
When approving a sample, record the grade, methods, limits and specification revision. On receipt, match the packing lot number to the lot-specific COA and record the measured values and release decision.
From samples to commercial delivery
Packaging and receiving
Specify industrial grade, net weight and lot. Ask whether an anticaking additive is present.
Storage and handling
Agree packaging and moisture protection for destination humidity. Retain a sample for comparison in solution preparation.
Sample and order lead times
State the concentration or hydrate, initial net quantity, destination and unloading method. Confirm minimum order, pallet or truckload quantity, dispatch point and arrival date separately.
Questions from the plant
Can sodium sulphate be substituted at equal weight?
The salts differ in composition and ionic effects. Trial each in the applicable dyeing process.
Why does shade differ at the same salt dose?
Check salt impurities, water hardness and the salt addition profile in addition to main salt assay.
Report a delivery or batch issue
Include the order number, lot number from the package, label photos and inspection records for the affected lot. When retesting, check Sodium chloride assay, Calcium and magnesium impurities, Water-insoluble matter.
Request documents for your application
TDS · Technical data sheet
For grade selection and sample approval, specify the grade and revision required.
SDS · Safety data sheet
Specify the country or region of use and the required language.
COA · Certificate of analysis
Request a sample COA during supplier review. For incoming inspection, provide the actual lot number.