Why It Matters
Boiler water must hold target alkalinity/pH and convert residual hardness to a non-adherent sludge that leaves via blowdown. Design uses caustic for pH, phosphate to precipitate calcium as hydroxyapatite, and a polymer to keep the sludge mobile
Solution Approach
Boiler water must hold target alkalinity/pH and convert residual hardness to a non-adherent sludge that leaves via blowdown. Design uses caustic for pH, phosphate to precipitate calcium as hydroxyapatite, and a polymer to keep the sludge mobile 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)
Caustic Soda (Sodium Hydroxide) Beads
CAS 1310-73-2
Acids & Salts
Primary alkali for pH raise
1824 (SODIUM HYDROXIDE SOLUTION) · Class Sodium hydroxide sets and holds boiler-water alkalinity/pH in the protective range and supplies the OH- needed to form hydroxyapatite with phosphate
Melting Point: 318 °C Boiling Point: > 130 °C at 760 mmHg Density: 1.5 at 20 °C
Full Details
Monosodium Phosphate
CAS 7558-80-7
Specialty Additives
pH Adjustment
Supplies orthophosphate that reacts with residual Ca2+ under boiler alkalinity to form soft calcium hydroxyapatite sludge instead of hard tube scale
Melting Point: Decomposes at 75 Density: 2360 kg/cu m Solubility: 121 g/L
Full Details
Sodium Tripolyphosphate (STPP)
CAS 7758-29-4
Acids & Salts
Chelation / Sequestration
Polyphosphate both sequesters hardness and reverts to orthophosphate at temperature, reinforcing the phosphate residual that precipitates calcium as removable sludge
Melting Point: 622 °C Density: 2.52 g/cm3 Solubility: Freely soluble in water. Insoluble in ethanol
Full Details
Polyacrylic Acid Sodium (PAAS)
CAS 9003-04-7
Polymers & Resins
Conditioning
Conditions the phosphate/calcium sludge into a fine, fluid suspension so it discharges cleanly with blowdown rather than caking on tubes
Full Details