Cooling — Process Challenge

Korrosionsinhibitoren für Kühlwasser (Stahl und Kupfer)

Kühlsysteme kombinieren Baustahl- und Buntmetallkomponenten (Kupfer/Messing/Admiralitätsmessing); sauerstoffhaltiges Umlaufwasser korrodiert Stahl und entzinkt/pitzt Kupfer. Die Auslegung verwendet einen anodischen und einen kathodischen Inhibitor für Stahl sowie Azole für Buntmetalle (Kupfer/Messing) zum Schutz von Kupferwerkstoffen
Updated Jun 2026
Lösungsansatz

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 (5)
Natriummolybdat
CAS 7631-95-0
Spezialadditive
Molybdate corrosion inhibitor
Anodic passivator for mild steel; molybdate reinforces the protective gamma-Fe2O3 oxide film and is far less toxic than chromate, working synergistically with zinc
Physical Description: White solid; Colorless crystalline solid   Schmelzpunkt:687 °C   Solubility: Solubility in water, g/100ml at 100 °C: 84
Schnellansicht
Alle Details
Zinc Nitrate
CAS 7779-88-6
Spezialadditive
Konditionierung
1514 (ZINC NITRATE) · Class
Cathodic inhibitor; Zn2+ precipitates as Zn(OH)2 at cathodic sites, throttling the oxygen-reduction reaction that drives steel corrosion
Physical Description: Zinc nitrate is a colorless crystalline solid. …   Appearance: White powder   Schmelzpunkt:36 °C
Schnellansicht
Alle Details
Tolyltriazole (TTA / Methylbenzotriazole)
CAS 29385-43-1
Spezialadditive
Yellow metal protection
Tolyltriazole chemisorbs a Cu-TTA film on copper/brass, stopping dissolution and dezincification; more chlorine-tolerant than benzotriazole
Schnellansicht
Alle Details
Benzotriazole (BTA)
CAS 95-14-7
Spezialadditive
Copper corrosion inhibitor
Benzotriazole forms a tenacious Cu-BTA chelate film that passivates yellow metals and suppresses galvanic copper plating onto steel. (Spine tags Biocidal; the role here is copper corrosion inhibition.)
Schmelzpunkt:98–100 °C   Siedepunkt:204 °C at 15 mmHg   Dichte:1.36 g/cu cm at 20 °C
Schnellansicht
Alle Details
2-Mercaptobenzothiazole (MBT)
CAS 149-30-4
Spezialadditive
Korrosionsschutz
2811 (2-MERCAPTOBENZOTHIAZOLE) · Class
Thiol-bearing azole gives fast initial copper passivation and is often paired with TTA for rapid film establishment on fresh metal
Schmelzpunkt:177–181 °C   Siedepunkt:Decomposes   Dichte:1.42 at 20 °C
Schnellansicht
Alle Details

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