Approche de solution
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
Water & System Assessment
Characterize the water and the system — hardness, alkalinity, pH, TDS/conductivity, microbial load, and the metallurgy and temperatures of the equipment being protected.
2
Program & Chemistry Selection
Match coagulants, flocculants, scale and corrosion inhibitors, biocides, or pH adjusters to the water profile and discharge limits, factoring compatibility with any existing program.
3
Jar Testing & Dosing
Confirm coagulant and flocculant dose and feed point by jar test, set inhibitor and biocide treat rates, and size packaging (drums, totes, bulk) to consumption.
4
Monitoring & Control
Track residuals, turbidity, ORP, corrosion coupons, and effluent compliance, adjusting chemistry and dose as feedwater and load change.
Recommended Chemistries (7)
Hydroxyethylidene Diphosphonic Acid
CAS 2809-21-4
Esters Phosphoriques et Dérivés
Inhibiteur de tartre CaCO3 primaire
HEDP threshold-inhibits CaCO3/CaSO4 in the RO reject at low dose; widely accepted as membrane-compatible
Point de fusion:198-199 Point d'ébullition:578.8 Solubility: 1.15e+01 g/L
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DTPMPA (Diethylenetriamine Penta(methylenephosphonic acid))
CAS 15827-60-8
Esters Phosphoriques et Dérivés
High-temperature phosphonate
Strong against sulfate scales (BaSO4/CaSO4) and stable at the high LSI of the concentrate; protects tail elements
Physical Description: Solid; 49-51% Aqueous solution: Clear amber to …
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Polyepoxysuccinic Acid (PESA)
CAS 51274-37-4
Esters Phosphoriques et Dérivés
Chélation / Séquestration
Phosphorus-free polycarboxylate antiscalant (low eutrophication/discharge concern) effective on carbonate and sulfate scales in membrane plants
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HPAA (2-Hydroxyphosphonoacetic Acid)
CAS 23783-26-8
Esters Phosphoriques et Dérivés
Chélation / Séquestration
Threshold inhibitor with good calcium tolerance, broadening scale coverage across variable RO feedwaters
Physical Description: Brown liquid. Slight acrid odor
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Sodium Hexametaphosphate (SHMP)
CAS 10124-56-8
Additifs de Spécialité
Chélation / Séquestration
Classic low-cost polyphosphate that sequesters Ca2+/Ba2+ and threshold-inhibits carbonate scale on RO feed
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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Diethylene Triamine Penta(Methylene Phosphonic Acid) Heptasodium Salt (DTPMP.Na7)
CAS 68155-78-2
Genuine, textbook fit. DTPMP is THE workhorse RO/NF membrane antiscalant — a penta-phosphonate with the broadest threshold-inhibition spectrum across CaCO3, CaSO4 and BaSO4, and the best thermal/high-pH stability of the commodity phosphonates, so it holds at the concentrate tail where LSI peaks. The heptasodium salt is the near-neutral, feed-dosable form (no pH depression on injection). CAS 68155-
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Bis(HexaMethylene Triamine Penta (Methylene Phosphonic Acid)) BHMTPMPA
CAS 34690-00-1
Genuine fit for the specific high-LSI/high-hardness niche this page describes. BHMTPMPA is a high-charge-density, high-molecular-weight phosphonate marketed precisely for scale control where lower phosphonates lose Ca-tolerance and precipitate — i.e. high-hardness, high-alkalinity, elevated-temperature membrane and oilfield service. Directly serves CaCO3/CaSO4/BaSO4 threshold inhibition in the RO
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