Why It Matters
Design prevents/removes scale in dishwasher boilers and spray arms with phosphonate (HEDP) and chelant programs
Solution Approach
Design prevents/removes scale in dishwasher boilers and spray arms with phosphonate (HEDP) and chelant programs RawSource supplies the base chemicals that go into these programs. We can help with product selection, grade matching, and sourcing from multiple origins for supply security.
Typical Treatment Workflow
1
System Assessment
Characterize operating conditions—fluid composition, temperature, pressure, flow rates—and benchmark current treatment performance.
2
Chemistry Selection
Match base chemicals to your operating envelope. Factor in compatibility with existing programs, regulatory constraints, and downstream impacts.
3
Dosage & Delivery
Determine optimal treat rates through jar testing or field trials. Configure packaging (drums, totes, ISO tanks) to match consumption and storage logistics.
4
Monitoring & Adjustment
Track KPIs—coupon rates, residuals, separator performance, water quality. Adjust chemistry and dosage as conditions change.
Recommended Chemistries (4)
Hydroxyethylidene Diphosphonic Acid
CAS 2809-21-4
Phosphate Esters & Derivatives
Phosphonate with combined chelation and scale inhibition
Phosphonate that adsorbs onto growing crystal faces (threshold inhibition) so carbonate scale cannot nucleate on heat-exchange surfaces; the design's named active
Melting Point: 198-199 Boiling Point: 578.8 Solubility: 1.15e+01 g/L
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ATMP.Na5 — Pentasodium Amino Trimethylene Phosphonate
CAS 2235-43-0
Phosphate Esters & Derivatives
Chelation / Sequestration
Aminophosphonate scale inhibitor stable to the high temperatures inside machine boilers
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Sodium Gluconate (Food Grade)
CAS 527-07-1
Esters
Alkaline-stable chelant essential for CIP at pH > 10
Alkaline-stable chelant (works at pH>10) that holds hardness in solution during the hot wash phase
Melting Point: 170-175 °C Boiling Point: No boiling point at normal pressure; decomposes… Density: 1.8 g/cm3
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Sodium Hexametaphosphate (SHMP)
CAS 10124-56-8
Specialty Additives
Chelation / Sequestration
Sequesters Ca/Mg and threshold-inhibits scale on spray-arm jets
Physical Description: Polymeric sodium metaphosphates: Clear hygrosco… Solubility: CLEAR, HYGROSCOPIC GLASS; MP 628 °C; SOL IN WAT… Decomposition: When heated to decomposition it emits toxic fum…
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