Plan a trial for your application
High-hardness recirculating water
At actual calcium and alkalinity, compare scale inhibition. Record turbidity and deposition endpoints.
Oilfield water treatment
Compare compatibility and precipitation in representative formation water at target temperature. Specify acid or sodium salt.
Purchase specifications and incoming inspection
Include the intended grade or current specification in the enquiry. Use the table to compare selection criteria and inspection conditions. The specification agreed by both parties defines the contractual limits. Shandong Taihe · DTPMPA acid and its water treatment applications ↗
| Property | Unit | Published or agreed specification | Test conditions and checks |
|---|---|---|---|
| Active acid | Mass fraction | Request separate limits for the acid or salt. | Report DTPMPA-equivalent content separately from solids and check the analytical basis. |
| Iron | mg/kg | Set the upper limit for the intended application. | Verify the as-received result as Fe and the quantification limit. |
| Solution pH | Dimensionless | Specify for the acid or sodium salt grade. | Record the sample concentration and temperature. Keep diluted and stock solution results separate. |
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
List active acid concentration, container and net weight separately. For dosing-pump installations, check connections and density.
Storage and handling
Verify salt form and documentation at handover. Check container residues and iron contamination before customer trials.
Sample and order lead times
State treatment scale, trial quantity and acceptable packaging. Request minimum quantities, preparation times and arrival dates for lab samples, pilot lots and routine replenishment.
Questions from the plant
Why do products with the same abbreviation give different pH and solids?
Compare scale control in actual concentrated water. Record metal loading and reporting basis.
Can DTPMP and its sodium salt be substituted at equal concentration?
Confirm neutralisation state, active-acid equivalent, sodium contribution and pH. Verify compatibility in the original formulation.
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 salt form, active acid equivalent, Iron content.
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.