Nalco 77352 Sds

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). nalco 77352 sds

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:  The Safety Data Sheet (SDS) for NALCO® 77352

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. Feature: Magnetite Passivation Technology

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

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2. Protection Mechanism: Magnetic Iron Layer Formation

• Feature: Magnetite Passivation Technology.
• Benefit: By maintaining proper pH, the solution promotes the formation of a stable, self-repairing magnetite layer ($Fe_3O_4$) on steel and copper alloy surfaces. This microscopic barrier prevents the aggressive acidic corrosion that leads to "grooving" and metal loss in return lines.

Section 10: Stability and Reactivity

• Stability: Stable under normal conditions.
• Hazardous polymerization: Will not occur.
• Conditions to avoid: Extreme temperatures, freezing (can break emulsion or concentrate certain components).

Section-by-Section Breakdown of Nalco 77352 SDS

Based on the most recent version of the Nalco 77352 SDS (revision date ~2023-2024), here are the critical sections every user must understand.

Section 13: Disposal Considerations

• Do not discharge into drains or natural waters without treatment.
• Dispose of in accordance with federal, state, and local regulations. Typically, non-RCRA hazardous waste, but confirm via testing.
• Empty drums should be triple-rinsed and recycled or disposed of as non-hazardous.

Practical safety steps (assume worst-case until you read the SDS)

• Use appropriate PPE: chemical-resistant gloves, safety goggles, face shield if splashes possible, and protective clothing.
• Use in well-ventilated area; if inhalation hazard or airborne exposure possible, use respirator per SDS.
• Store per manufacturer instructions, away from incompatible materials and ignition sources.
• For spills, follow SDS accidental release measures: contain, absorb, collect in suitable containers, dispose per local regulations.
• For exposures, follow SDS first-aid and seek medical attention when indicated.

1. Core Functionality: Advanced pH Elevation

• Feature: High-Performance Alkalinity Builder.
• Benefit: Nalco 77352 utilizes a blend of neutralizing amines that effectively neutralize carbonic acid formed in condensate return lines. This rapidly elevates pH levels to the optimal control range (typically 8.5–9.5), establishing a protective alkaline environment throughout the system.