Datasheet summary
BetzDearborn DCL32
Engineering summary from PDF text extraction for BetzDearborn DCL32. Verify every value with the OEM datasheet.
Summary
Product identification
BetzDearborn DCL32 is a liquid product consisting of a high-quality solution of sodium bisulfite (NaHSO₃). It is a cost-effective dechlorinating agent for food-grade and potable membrane applications.
Description and features
BetzDearborn DCL32 is used to remove free and combined chlorine from reverse osmosis and ultrafiltration feed waters. It protects thin-film composite membranes from irreversible damage caused by chlorine oxidation.
The product is certified by NSF International to NSF/ANSI Standard 60. Its ingredients are generally recognized as safe by the FDA for use in human or animal food.
Chemistry of dechlorination
The deactivation of chlorine by sodium bisulfite is represented by the following chemical reaction:
NaHSO₃ + HOCl → NaHSO₄ + HCl
Application
- Dosage: 4.44 ppm of BetzDearborn DCL32 are required to remove 1 ppm of chlorine (measured as total chlorine).
- Potable Use: Approved for potable dechlorination with a maximum use level of 15 ppm (mg/L).
- Dosage Limitation: Application dosages should be limited by the chlorine demand. An excess of sodium bisulfite may increase the incidence of microbiological growth in membrane systems.
Consult your SUEZ representative for assistance in identifying chlorine levels and defining dosage requirements.
Stability
- The product may be slowly degraded by oxygen after the package is opened, with degradation rate increasing at higher temperatures.
- When used in an open day tank, do not use agitation and monitor the active concentration weekly.
- Product stability decreases if diluted. Consult your SUEZ representative for optimum dilution concentration and solution stability.
- Refer to the Safety Data Sheet for specific stability information.
Packaging information
BetzDearborn DCL32 is available in a variety of containers and delivery methods. Contact your SUEZ representative for details.
Safety precautions
- Corrosion-resistant materials should be used for storage and handling. Discuss recommended materials of construction with your SUEZ representative.
- A Material Safety Data Sheet (MSDS) with detailed information is available upon request.
Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.
Official datasheet (PDF)
Curated from selected public technical reference material for discovery and preliminary comparison. This summary is not a substitute for a current certified manufacturer datasheet. Verify revisions and design limits before use.