Dispose of contents and container in accordance with local, regional, and national regulations. As a chemical waste, it should not be discharged into the sewer system without proper permits. It is often classified as hazardous waste due to its corrosivity (high pH).
Before you open that drum, ensure your team has verified the following from the current SDS:
Bottom Line: Do not handle NALCO 77352 based on memory or a generic water treatment template. Get the official SDS from Ecolab/Nalco directly.
Have a safety tip for handling Nalco products? Let us know in the comments below.
NALCO 77352 is a broad-spectrum, non-oxidizing biocide manufactured by
. It is primarily used to control microorganisms like bacteria and algae in industrial water systems, including open recirculating cooling systems, process water, and brewery pasteurizers. turquoise-az.com 1. Hazard Identification
According to the Safety Data Sheet (SDS), NALCO 77352 is classified as a hazardous chemical with the following risks: Health Hazards : May be harmful if swallowed or inhaled. It causes skin irritation serious eye irritation . It can also cause an allergic skin reaction. Physical Hazards non-flammable and non-combustible. Environmental Hazards toxic to aquatic life
and can cause long-lasting harmful effects in water environments. files.dep.state.pa.us 2. Composition & Ingredients The product is a liquid blend containing: Active Ingredients
: A mixture of 5-chloro-2-methyl-2H-isothiazol-3-one and 2-methyl-2H-isothiazol-3-one (CMIT/MIT) at 1–5% concentration. Stabilizers/Salts
: Magnesium Nitrate (1–5%) and Magnesium Chloride (1–5%).
: The stabilizer does not contain copper, making it safe for use in closed-loop systems where copper accumulation is a concern. turquoise-az.com 3. Physical & Chemical Properties Form/Color : Yellow liquid with a pungent odor. : 2.0 to 5.0 (acidic). : Approximately 1.02 g/cm³ (8.5 lb/gal). Solubility : Completely soluble in water. Boiling Point : 100°C (212°F). files.dep.state.pa.us 4. Handling, Storage, & First Aid Protective Equipment (PPE)
: Use nitrile or butyl rubber gloves, safety goggles, and a face shield. Ensure adequate ventilation; a respirator with an A-P filter may be required if vapors are present.
: Keep in a cool, well-ventilated place in original labeled containers. Storage for more than is not recommended. Incompatible Materials
: Avoid contact with strong alkalies (like ammonia or caustic soda), as this may generate heat and toxic vapors.
: Flush with water for at least 15 minutes and seek medical attention. : Rinse mouth with water. Do NOT induce vomiting unless directed by medical personnel. files.dep.state.pa.us 5. Accidental Release & Disposal
Small spills should be contained with absorbent material like sand or earth. A deactivation solution
(5% sodium bicarbonate and 5% sodium hypochlorite) can be used to treat residual spills. Disposal must follow local regulations and occur at an approved waste facility.
For the most up-to-date and region-specific version, you can request an SDS directly through the Ecolab SDS portal dosage rates for specific industrial systems or information on material compatibility for your equipment? NALCO® 77352NA nalco 77352 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:
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
This report provides a comprehensive overview of the NALCO 77352
Safety Data Sheet (SDS), focusing on its chemical properties, critical hazards, and safety protocols for industrial applications. Product Overview NALCO 77352 is a broad-spectrum, non-oxidizing biocide developed by
for controlling microbiological growth in industrial water systems. It is specifically designed to be effective even at higher pH values, helping to maintain system efficiency and prevent microbial corrosion. turquoise-az.com Primary Uses
: Open and closed-loop cooling systems, process water systems, air washers, and brewery pasteurizers. Key Advantage : Unlike some biocides, its stabilizer does not contain copper
, making it safe for use in closed-loop systems without increasing copper content. turquoise-az.com Hazard Identification NALCO 77352 is classified as a corrosive chemical
. Due to its high toxicity, strict adherence to safety protocols is mandatory. Health Hazards
: Corrosive; causes irreversible eye damage and permanent tissue damage. : Causes severe skin burns and may cause allergic skin reactions Inhalation/Ingestion Dispose of contents and container in accordance with
: Harmful if inhaled or swallowed; inhalation may cause irritation to the respiratory system. Environmental Impact
: Very toxic to aquatic organisms with potential long-lasting effects. files.dep.state.pa.us Chemical Composition The product is a blend of isothiazolinone biocidal agents. Key hazardous ingredients include: Lenntech Water treatment 5-Chloro-2-methyl-4-isothiazolin-3-one 2-Methyl-4-isothiazolin-3-one Magnesium Nitrate files.dep.state.pa.us Physical & Chemical Properties
NALCO 77352NA Safety Data Sheet | PDF | Fires | Poison - Scribd
Section 1: Identification
Section 2: Hazard(s) Identification
Section 3: Composition/Information on Ingredients
Section 4: First Aid Measures
Section 5: Fire-Fighting Measures
Section 6: Accidental Release Measures
Section 7: Handling and Storage
Section 8: Exposure Controls/Personal Protection
Section 9: Physical and Chemical Properties
Section 10: Stability and Reactivity
Section 11: Toxicological Information
Section 12: Ecological Information
Section 13: Disposal Considerations
Section 14: Transport Information
Section 15: Regulatory Information
Section 16: Other Information
The Safety Data Sheet (SDS) for NALCO® 77352 (also referred to as 77352NA) identifies it as a broad-spectrum, non-oxidizing biocide primarily used to control microbiological growth in industrial water systems.
The following information summarizes the key sections typically found in its SDS: 1. Product Identification Product Name: NALCO® 77352
Recommended Use: Biocide for industrial water systems, such as cooling towers and process water. Manufacturer: Nalco Company (an Ecolab Company).
Emergency Phone: (800) 424-9300 (CHEMTREC) for 24-hour assistance. 2. Hazards Identification
According to the NALCO 77352 SDS, the product is classified as hazardous with the following signals:
Classification: Corrosive, Skin Irritation (Category 2), Eye Irritation (Category 2A), and Skin Sensitization (Category 1).
Health Risks: Causes irreversible eye damage and skin burns; harmful if inhaled or swallowed.
Environmental Risks: Toxic to aquatic life with long-lasting effects. 3. Composition / Ingredients
The formula contains isothiazolinones (5-chloro-2-methyl-2H-isothiazol-3-one and 2-methyl-2H-isothiazol-3-one) combined with magnesium nitrate and chloride. 4. First Aid Measures
Action: Immediate medical attention is required for eye/skin contact (flush for 15 minutes) or ingestion; remove contaminated clothing. NALCO® 77352NA
NALCO 77352 is a corrosive, non-oxidizing biocide designed for controlling microbial growth in industrial water systems, featuring active isothiazolinone agents. It is classified as a skin irritant, eye irritant, and skin sensitizer that requires specific PPE, including goggles and gloves, to manage hazardous exposure. For the most current official version, you can request an SDS directly through the Ecolab SDS Portal. NALCO 77352 Safety Data Sheet | PDF - Scribd
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:
Based on the most recent version of the Nalco 77352 SDS (revision date ~2023-2024), here are the critical sections every user must understand.
Nalco 77352 — a product designation that lands squarely in the world of industrial water treatment and chemical handling. Ask for its SDS (safety data sheet) and you’re tapping into a document that’s all about safe, informed use: hazards, first aid, protective gear, storage, disposal, and regulatory bits. But beyond the dry headings lies a story about how workplaces keep people and systems running smoothly.