Safety Data Sheet (SDS) management is a cornerstone of industrial compliance. For facilities using water treatment chemicals, locating, understanding, and implementing the guidelines within a product’s SDS is not just a regulatory requirement—it is a critical operational necessity. One product that frequently appears in cooling towers, boilers, and recirculating water systems is Nalco 77352.
If you have searched for the Nalco 77352 SDS, you are likely a safety professional, maintenance engineer, or procurement specialist needing immediate, accurate information regarding hazard identification, first-aid measures, handling protocols, and regulatory data. This comprehensive guide consolidates the critical details you need to maintain a safe workplace and comply with OSHA’s Hazard Communication Standard (29 CFR 1910.1200).
While the exact percentages are proprietary, the SDS will list hazardous ingredients. Expect:
In the world of industrial water treatment, few names carry as much weight as Nalco Water, an Ecolab company. Among their extensive portfolio of specialty chemicals is product code Nalco 77352. While the exact proprietary name can vary based on regional labeling, Nalco 77352 is generally classified as a performance-boosting additive used in recirculating cooling water systems, boilers, or closed loops. Its primary functions typically include deposit control, corrosion inhibition, or scale prevention.
However, no industrial chemical should be handled without its authoritative safety document. This is where the SDS (Safety Data Sheet)—formerly known as the MSDS—becomes critical. If you are searching for the Nalco 77352 SDS, you are likely responsible for: complying with OSHA HazCom 2012 (or global GHS standards), writing a job safety analysis (JSA), training employees, or responding to a spill.
This article breaks down everything you need to know about the Nalco 77352 Safety Data Sheet, including its 16 sections, hazard identification, storage requirements, and emergency protocols.
Nalco Water (now a division of Ecolab) is protective of its intellectual property. Unlike generic bleach or lye, NALCO 77352 is a proprietary blend. Most manufacturers do not post full SDS sheets on public, unsecured websites because:
For compliance with OSHA, WHMIS, or other regulatory bodies, you must possess the official SDS.
Understanding the Nalco 77352 Safety Data Sheet (SDS) NALCO 77352 is a proprietary, broad-spectrum, non-oxidizing biocide designed to control bacteria, algae, and fungi in industrial water systems. Often referred to as NALCO 77352NA, this chemical is essential for maintaining heat transfer efficiency and preventing biofouling in systems like cooling towers and brewery pasteurizers.
The following comprehensive guide summarizes the critical information found in the Nalco 77352 Safety Data Sheet (SDS), including its chemical composition, handling requirements, and safety protocols. Product Identification and Composition
Nalco 77352 is manufactured by Ecolab and is primarily used as a liquid biocide for industrial and professional applications.
Active Ingredients: The product is a blend of Isothiazolin-3-one biocidal agents, specifically: nalco 77352 sds
5-chloro-2-methyl-2H-isothiazol-3-one and 2-methyl-2H-isothiazol-3-one (3:1 mixture).
Other Components: Includes Magnesium Nitrate and Magnesium Chloride, which act as stabilizers. Physical State: A clear, yellow liquid with a pungent odor. Hazard Identification
Nalco 77352 is classified as a hazardous, corrosive material, bearing a "Warning" signal word.
Health Hazards: Causes severe skin burns and irreversible eye damage. It may cause allergic skin reactions and is harmful if swallowed or inhaled.
Environmental Hazards: Toxic to aquatic life with long-lasting effects. Physical and Chemical Properties
Key characteristics include an acidic pH (2.0 – 5.0), a specific gravity of 1.01 – 1.03, and complete solubility in water. It is a yellow liquid with a freezing point of -3°C and a boiling point of 100°C. NALCO 77352 - Turquoise
The NALCO 77352 Safety Data Sheet (SDS) identifies this product as a broad-spectrum, non-oxidising biocide used to control microbiological growth in industrial water systems, such as open or closed cooling loops, process water, and brewery pasteurisers. Quick Hazard Profile Classification: Corrosive, toxic to aquatic life. Signal Word: DANGER. Primary Hazards: Causes irreversible eye damage and severe skin burns. Harmful if inhaled or swallowed. May cause an allergic skin reaction.
Highly toxic to aquatic organisms with long-lasting effects. Emergency First Aid Measures
Eyes/Skin: Flush immediately with water for 15-20 minutes, removing contaminated clothing and lenses. Seek immediate medical attention.
Inhalation/Ingestion: Move to fresh air or rinse mouth. Do NOT induce vomiting. Seek medical attention. Handling & Material Compatibility
Safety: Use appropriate PPE, including goggles and nitrile gloves, and store in a secure, ventilated area. Nalco 77352 SDS: Essential Safety, Handling, and Compliance
Materials: Compatible materials include plastics like PE and PVC, while avoiding materials like brass and carbon steel. NALCO 77352 Safety Data Sheet | PDF - Scribd
Understanding Nalco 77352: A Comprehensive Guide to Safety and Application
Nalco 77352 (often identified as Nalco 77352NA) is a high-performance, broad-spectrum, non-oxidizing biocide and fungicide manufactured by Ecolab. Primarily used in industrial water systems, it is engineered to control the growth of bacteria, algae, and fungi that can lead to biofilm formation, system fouling, and microbiologically induced corrosion (MIC). Technical Overview and Physical Properties
Nalco 77352 is a clear, light-yellow liquid with a pungent odor. It is completely soluble in water, making it easy to dose into liquid-based industrial systems. The technical specifications of the product include: pH (100%): 2.0 to 5.0 (acidic) Specific Gravity: 1.01 – 1.03 at 20°C Density: Approximately 8.5 lbs/gal Viscosity: 3 cps at 25°C
Active Constituents: Proprietary blend including Magnesium Nitrate, Magnesium Chloride, and a mixture of Isothiazolinones (5-chloro-2-methyl-2H-isothiazol-3-one and 2-methyl-2H-isothiazol-3-one). Primary Industrial Applications
This biocide is widely utilized in systems where biological fouling can compromise heat transfer efficiency or damage equipment. Common applications include:
Cooling Systems: Open recirculating towers, closed-loop cooling systems, and process water systems.
Food & Beverage Industry: Used in brewery pasteurizers and air washers. It is NSF registered for treating boilers and cooling systems in food processing areas, provided the treated water does not contact edible products.
Computing & HVAC: Specifically recommended for water-cooled computer systems to prevent fungi growth in cold plates and cooling channels. NALCO® 77352NA
Nalco 77352 is a broad-spectrum, non-oxidizing biocide primarily used to control bacteria, algae, and fungi in industrial water systems. According to the Safety Data Sheet (SDS), it is classified as a corrosive chemical that causes irreversible eye damage and skin burns. Critical Safety & Handling
Hazards: It is harmful if swallowed, inhaled, or absorbed through the skin. It is also very toxic to aquatic organisms, requiring strict disposal protocols. Personal Protective Equipment (PPE): Eyes: Wear a face shield and chemical splash goggles. Introduction: What is Nalco 77352
Skin: Use butyl or impervious rubber gloves, a chemical-resistant apron, and boots.
Respiratory: Use a respirator with an organic vapor cartridge if significant mists or vapors are present. First Aid:
Eyes: Rinse cautiously with water for several minutes; remove contact lenses and continue rinsing.
Skin: Wash immediately with plenty of water and remove contaminated clothing.
Inhalation/Ingestion: Call a POISON CENTER or physician immediately. Product Specifications
Application: Used in open and closed-loop cooling systems, process water systems, and brewery pasteurizers. It is copper-free, making it safe for closed-loop systems.
Active Ingredients: A blend of Isothiazolin-3-one biocidal agents and Magnesium Nitrate. Physical Properties: Form: Yellow liquid with a pungent odor. pH: Highly acidic, typically between 2.0 and 5.0. Solubility: Completely soluble in water. NALCO® 77352NA
Based on the most recent version of the Nalco 77352 SDS (revision date ~2023-2024), here are the critical sections every user must understand.
Water treatment chemicals are regulated under the Toxic Substances Control Act (TSCA) in the U.S. and REACH in Europe. Without the current SDS:
Posting an SDS binder is not enough. According to OSHA, you must train employees on where the SDS is located and how to interpret Sections 4-8 specifically for Nalco 77352.
Sample training checklist: