The Nalco 77352 SDS emphasizes disciplined storage to maintain product integrity and safety.
How to obtain the official Nalco 77352 MSDS:
Important: MSDS documents expire and are updated. OSHA requires that SDSs be no more than 5 years old, but best practice is to request a new copy annually. Always check the "Revision Date" on the first page of the SDS.
The NALCO 77352 MSDS is not just a compliance document; it is a risk management tool. Understanding its sections — from first-aid measures (Section 4) to ecological toxicity (Section 12) — empowers your workforce to handle the chemical safely and responsibly.
Key final reminders:
By treating the MSDS as a living document — not a binder on a shelf — you protect your personnel, your equipment, and the environment while harnessing the full performance benefits of NALCO 77352.
Disclaimer: This article is for informational purposes only and does not replace the official NALCO 77352 Safety Data Sheet. Always refer to the most current SDS provided by Nalco Water/Ecolab for specific safety procedures, regulations, and emergency response protocols. Chemical formulations may change without notice.
NALCO 77352 is a broad-spectrum, non-oxidizing biocide designed to control microbiological growth in industrial water systems, including cooling towers, process water, and brewery pasteurizers. It is a liquid blend of isothiazolin-3-one active agents, typically appearing colorless to light yellow with a pungent odor. Hazard Identification
This product is classified as a corrosive chemical and a skin sensitizer.
Physical Hazards: Can cause irreversible eye damage and severe skin burns.
Health Hazards: Harmful if swallowed or inhaled. Prolonged exposure may cause allergic skin reactions.
Environmental Hazards: Highly toxic to aquatic life with long-lasting effects. Composition & Chemical Properties Active Ingredients
5-Chloro-2-methyl-4-isothiazolin-3-one (1–5%), 2-Methyl-4-isothiazolin-3-one (0.1–1%) Hazardous Additives Magnesium Nitrate (1–5%) pH (Neat) 3.0 – 5.0 (Acidic) Density 1.01 – 1.03 kg/L Solubility Complete in water Handling and First Aid
Always refer to the official Ecolab SDS portal for the most current safety documentation. Safety Data Sheets - SDS - MSDS - Ecolab
NALCO 77352 is a broad-spectrum, non-oxidizing biocide primarily used to control microbiological growth in industrial water systems, including cooling towers, process water, and brewery pasteurizers. It is a blend of Isothiazolin-3-one biocidal agents and is favored for closed-loop systems because it does not contain copper.
Below is a summary of the key safety data typically found in its Material Safety Data Sheet (MSDS/SDS): 1. Hazard Identification
Classification: Classified as corrosive and hazardous to aquatic life. Physical Effects: Not expected to burn (non-flammable). Health Risks: Can cause irreversible eye damage and severe skin burns. Harmful if swallowed or inhaled. May cause an allergic skin reaction in some individuals. 2. Composition & Ingredients
Active Ingredients: Isothiazolinones (specifically CMIT/MIT BPF family).
Other Components: Magnesium Nitrate is often listed as a hazardous constituent. 3. First Aid Measures NALCO® 77352NA
Comprehensive Guide to Nalco 77352 MSDS and Safety Protocols
NALCO® 77352 is a non-oxidizing, broad-spectrum biocide specifically engineered for controlling microbiological growth in industrial water systems. Due to its chemical potency, understanding its Material Safety Data Sheet (MSDS) is critical for ensuring workplace safety and environmental compliance. Product Overview and Application nalco 77352 msds
NALCO 77352 is a liquid biocide primarily composed of Isothiazolin-3-one agents. It is used extensively in industrial settings, including: Open recirculating cooling systems.
Closed-loop cooling systems (it is copper-free, preventing risk to copper components).
Process water systems, air washers, and brewery pasteurizers.
Fungal control in water cooling systems, where it is often added when fungi are a past concern to prevent blockage of cooling channels. GHS Classification and Critical Hazards
According to the NALCO 77352 Safety Data Sheet, the product is classified as a hazardous substance with several severe warnings:
Corrosive: Causes irreversible eye damage and permanent tissue damage.
Dermal Risk: Causes skin burns and may trigger allergic skin reactions (sensitization).
Toxicity: Harmful if inhaled, swallowed, or absorbed through the skin. Environmental Impact: Highly toxic to aquatic organisms. Physical and Chemical Properties
Understanding the physical state of NALCO 77352 helps in identifying it during a spill or leak: Form: Liquid Color: Colorless to light yellow Odor: Pungent pH (Neat): 3.0 – 5.0 (acidic) Solubility: Complete in water Essential Safety Protocols and Handling
Proper handling of NALCO 77352 requires rigorous adherence to personal protective equipment (PPE) guidelines:
Eye Protection: Always wear chemical splash goggles and a face shield when handling the product. Hand Protection: Use impermeable rubber or butyl gloves.
Skin Protection: Wear a chemical-resistant apron and boots. A full slicker suit is recommended if gross exposure is likely.
Ventilation: Ensure adequate local exhaust ventilation to control airborne mists and vapors.
Feeding: It must be fed via a closed system—moving fluid from storage to treatment media without atmospheric exposure. First Aid Measures
In the event of accidental exposure, immediate action is required:
Eye Contact: Rinse immediately with plenty of water and seek urgent medical advice.
Skin Contact: Remove contaminated clothing immediately and wash skin with plenty of water. Treat any wetting of clothes as contact and administer first aid.
Ingestion: Do not induce vomiting. Seek medical attention immediately as it causes chemical burns to the digestive tract. Storage and Disposal NALCO® 77352NA
NALCO 77352 is a broad-spectrum, non-oxidizing biocide primarily used for controlling microbiological growth in industrial water systems. It is particularly valued for its efficacy in both open and closed-loop cooling systems, helping to prevent fouling, microbial corrosion, and the loss of heat transfer efficiency.
This guide provides a comprehensive summary of the information typically found in a NALCO 77352 Safety Data Sheet (SDS), including chemical composition, hazard identification, and safe handling protocols. 1. Product Overview and Composition The Nalco 77352 SDS emphasizes disciplined storage to
NALCO 77352 is a liquid formulation composed of a blend of active biocidal agents. Its chemistry is designed to be stable and effective even at high pH levels.
Active Ingredients: It contains a mixture of isothiazolinones—specifically 5-chloro-2-methyl-2H-isothiazol-3-one and 2-methyl-2H-isothiazol-3-one (often in a 3:1 ratio).
Secondary Components: The formula also includes Magnesium Nitrate and Magnesium Chloride as stabilizers. Physical Form: A yellow liquid with a pungent odour.
Key Specs: It has a pH of approximately 3.0 to 5.0 and is completely soluble in water. 2. Hazard Identification
According to GHS classifications, NALCO 77352 is categorized as a hazardous chemical requiring careful management. Human Health Hazards:
Skin/Eye Damage: Causes serious eye irritation and skin irritation. Exposure can lead to redness, pain, and potentially irreversible corneal damage.
Sensitization: May cause an allergic skin reaction in sensitive individuals. Acute Toxicity: May be harmful if swallowed or inhaled. Environmental Hazards:
Aquatic Toxicity: It is highly toxic to fish and aquatic life with long-lasting effects. It must never be discharged directly into natural water bodies. NALCO 77352 Safety Data Sheet | PDF - Scribd
This report provides a detailed overview of NALCO 77352 (also referred to as NALCO 77352NA
), a non-oxidizing biocide primarily used for microbiological control in industrial water systems. 1. Product Identification and Application Product Name: NALCO 77352 / NALCO 77352NA. Primary Function:
Broad-spectrum, non-oxidizing biocide and fungicide used to control microorganisms, including fungi and bacteria, in cooling water and related industrial systems. Common Applications: Open and recirculating cooling systems.
Closed-loop cooling systems (safe for use as it does not contain copper stabilizers).
Process water systems, air washers, and brewery pasteurizers. files.dep.state.pa.us 2. Hazardous Composition
The active ingredients are proprietary but typically include: Isothiazolinones: A blend of isothiazolin-3-one biocidal agents. Magnesium Nitrate:
Often included as a hazardous component in these formulations. Lenntech Water treatment 3. Physical and Chemical Properties Value/Description Physical State Colorless to light yellow 3.0 – 5.0 (Acidic) Specific Gravity 1.01 – 1.03 @ 20°C 1.02 g/cm³ (approx. 8.5 lbs/gal) Solubility Completely soluble in water Boiling Point 100°C (212°F) Freezing Point -3°C (26.6°F) Flash Point Does not flash 4. Hazard Identification and Safety NALCO 77352 is classified as a chemical requiring strict safety protocols. NALCO® 77352NA
Comprehensive Profile of NALCO® 77352 NALCO® 77352 (also referred to as NALCO® 77352NA) is a high-performance, non-oxidizing biocide primarily utilized for the control of microbial growth in industrial water systems. As a proprietary blend manufactured by Ecolab (Nalco Water), it is designed to manage bacteria, algae, and fungi in environments ranging from cooling towers to brewery pasteurizers.
Due to its potent chemical nature, the Safety Data Sheet (SDS) for Nalco 77352 classifies it as a hazardous and corrosive substance that requires strict adherence to safety protocols. Chemical Composition and Properties
The efficacy of Nalco 77352 is derived from its active isothiazolinone components.
Active Ingredients: It contains a mixture of 5-chloro-2-methyl-2H-isothiazol-3-one and 2-methyl-2H-isothiazol-3-one (typically in a 3:1 ratio), along with Magnesium Nitrate and Magnesium Chloride. Physical State: A yellow liquid with a pungent odor.
Solubility and pH: It is completely soluble in water and has an acidic pH typically between 3.0 and 5.0. Important: MSDS documents expire and are updated
Stability: The product is stable under normal conditions but can evolve hazardous gases like hydrogen chloride, nitrogen oxides ( NOxcap N cap O sub x ), and sulfur oxides ( SOxcap S cap O sub x ) if involved in a fire. Industrial Applications
Nalco 77352 is favored in industrial settings for its broad-spectrum control and compatibility with various treatment programs.
Target Systems: It is used in open recirculating cooling systems, closed-loop cooling systems, air washers, and process water systems.
Key Benefit: Because it does not contain copper stabilizers, it is particularly suitable for closed-loop systems where increasing copper content would be a concern.
Efficiency: It remains effective even at higher pH values and in the presence of organic matter. Health and Safety Hazards
The SDS identifies several critical health risks associated with exposure to Nalco 77352:
Corrosivity: It causes irreversible eye damage and severe skin burns upon contact.
Sensitization: It can cause an allergic skin reaction, which may be delayed after exposure.
Toxicity: It is harmful if inhaled, swallowed, or absorbed through the skin. Handling, Storage, and PPE
Strict personal protective equipment (PPE) and handling procedures are mandatory to mitigate risks:
PPE Requirements: Personnel must wear chemical splash goggles, a face shield, and impermeable gloves (such as nitrile or butyl rubber). For high-exposure tasks, chemical-resistant suits and rubber boots are recommended.
Storage: Keep containers tightly closed in a cool, well-ventilated area. It should be protected from freezing and extreme heat.
Material Compatibility: Compatible storage materials include PVC, Polyethylene (PE), Teflon, and 316L Stainless Steel. It is not compatible with aluminum, brass, or carbon steel. Environmental Impact
Nalco 77352 is classified as very toxic to aquatic organisms.
Ecological Effects: It can cause long-lasting harmful effects in aquatic environments.
Disposal: The product and its containers must be disposed of at an approved waste disposal plant in accordance with local and national regulations. It should never be allowed to enter drains or surface water. NALCO® 77352NA
Important Notice Regarding "MSDS" vs. SDS: Under the Globally Harmonized System (GHS), Material Safety Data Sheets (MSDS) have been replaced by Safety Data Sheets (SDS). Regulatory bodies like OSHA (in the US) and ECHA (in the EU) now require the 16-section SDS format. Therefore, while this report references historical MSDS data, it is structured as a modern SDS compliance report.
The MSDS for Nalco 77352 provides acute toxicity data (typically based on component testing):
This section of the MSDS is non-negotiable for OSHA compliance (29 CFR 1910.1200).