BetzDearborn DCL95

Summary

Product Identification

BetzDearborn DCL95 is a powder product used for removing free and combined chlorine from reverse osmosis and ultrafiltration feedwaters. It is a high quality sodium metabisulfite (Na₂S₂O₅), >99% by weight.

Description and Features

• Ingredients are Generally Recognized As Safe (GRAS) by FDA for use in human or animal food.
• Economical to use.

Chemistry of Dechlorination

1. Hydrolysis of sodium metabisulfite to sodium bisulfite: Na₂S₂O₅ + H₂O → 2NaHSO₃
2. Deactivation of chlorine by sodium bisulfite: NaHSO₃ + HOCl → NaHSO₄ + HCl

Typical Applications

Used in feedwaters for membrane systems that have been treated with chlorine to prevent micro-biological growth. This protects thin film composite membranes from irreversible damage caused by oxidation.

Application Dosage

• 1.44 ppm (mg/L) of BetzDearborn DCL95 is required to remove 1 ppm (mg/L) of chlorine or chloramine.
• Dosage should be limited by the chlorine demand to avoid excess sodium bisulfite, which may increase microbiological growth.
• Consult with a SUEZ representative for assistance in identifying chlorine levels and determining DCL95 requirements.

Stability

• Refer to the Material Safety Data Sheet for detailed stability information.
• The product may degrade slowly due to oxygen exposure after opening, with degradation rate increasing at higher temperatures.
• Solutions are limited to a maximum concentration of approximately 20%.
• Solutions should ideally be used within 1 week due to active concentration degradation over time.
• When using in an open day tank, mild agitation should only be used for solution preparation. Do not use agitation after preparation and monitor active concentration weekly.
• Consult with your SUEZ representative for optimum dilution concentration and solution stability.

Packaging Information

BetzDearborn DCL95 is a powdered material available in various containers. Contact your SUEZ representative for details.

Materials Compatibility

Corrosion-resistant equipment is recommended for storage, preparation, and use.

Rating A: Butyl, Viton A, Buna N, EPR, Natural Rubber, Viton Lithurge, Polyethyl HD & LD, PVC, Kynar, Nylon, Polyethyl HDCL, Polypropylene, Polysulfone, Teflon Rating B: Hypalon, Neoprene, Tygon Rating C: X Rating X: LCS, LB, Al, SS

Disclaimer

This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror