NALCO 73385 is a broad-spectrum biocide used primarily in industrial water systems. It is effective at controlling microbial growth, including bacteria, fungi, and algae, which can cause biofouling and corrosion in cooling towers and geothermal systems. 🛡️ Hazards Identification
According to standard Safety Data Sheets (SDS) for this class of industrial biocides:
Acute Toxicity: May be harmful if swallowed or inhaled in concentrated forms.
Skin & Eye Irritation: Causes severe skin burns and eye damage; classified as corrosive.
Sensitization: May cause an allergic skin reaction in some individuals.
Environmental Impact: Highly toxic to aquatic life with long-lasting effects. 🧪 Composition and Handling
Primary Function: Biocontrol for industrial cooling and process water. Personal Protective Equipment (PPE): Wear chemical-resistant gloves (nitrile or neoprene). Use safety goggles or a full-face shield.
Wear a protective apron or chemical suit to prevent skin contact.
Storage: Store in a cool, dry, well-ventilated area away from direct sunlight and incompatible materials like strong oxidizers. 🚑 Emergency First Aid
Eye Contact: Rinse immediately with plenty of water for at least 15 minutes; seek medical attention.
Skin Contact: Wash immediately with soap and water; remove contaminated clothing.
Inhalation: Move to fresh air; if breathing is difficult, provide oxygen and call a doctor. nalco 73385 msds
Ingestion: Do not induce vomiting; rinse mouth and drink plenty of water; seek immediate medical help. 🌍 Environmental & Disposal
Spill Containment: Stop leaks if safe; use inert absorbent material (sand or earth) to soak up the liquid.
Disposal: Dispose of contents and containers in accordance with local and national regulations; do not discharge directly into surface waters or sewers. Regulatory Context
In New Zealand, NALCO 73385 is used in projects like the Taheke Geothermal Project, where its application is strictly monitored under environmental resource consents to prevent contamination of fresh water aquifers. For specific discharge limits, you can review the draft conditions provided by the Environmental Protection Authority (EPA).
Understanding NALCO 73385: Safety, Application, and MSDS Guidelines
NALCO 73385 is a high-performance, non-oxidizing biocide designed to control microbiological growth in industrial water systems. This broad-spectrum agent is particularly effective against slime-forming and sulfate-reducing bacteria, making it a critical component for maintaining efficiency in recirculating cooling towers and closed-loop systems. Product Overview and Applications
NALCO 73385 is engineered to remain effective even at elevated pH levels, which is often a challenge for other water treatment chemicals.
Key Uses: Specifically for recirculating cooling towers and closed water loops.
Target Microorganisms: Provides aggressive control over bacteria that cause corrosion and reduce heat transfer efficiency.
Physical Form: Typically supplied as a yellow liquid with a sweet odor. Physical and Chemical Properties
According to technical data from HKCT Malaysia and other specifications, the following are typical properties: pH (Neat): Highly alkaline, ranging from 12.6 to 13.0. Specific Gravity: Approximately 1.16 - 1.20 kg/L. Solubility: Completely soluble in water. Freezing Point: Approximately -6°C. Safety and Hazards (MSDS Insights) NALCO 73385 is a broad-spectrum biocide used primarily
Based on Material Safety Data Sheets (MSDS) for similar Nalco non-oxidizing biocides, users must observe strict safety protocols. Health Hazards
Eye Contact: May cause irritation with prolonged contact; related formulations are often classified as corrosive, capable of causing tissue damage. Skin Contact: Prolonged exposure may lead to irritation.
Ingestion: While not a likely route of exposure, it can cause gastro-intestinal irritation, nausea, and vomiting. Fire and Reactivity Flammability: Non-flammable and non-combustible.
Decomposition: Under fire conditions, it may evolve toxic oxides of carbon ( COxcap C cap O sub x ) or phosphorus ( POxcap P cap O sub x
Incompatibility: Avoid contact with strong acids and strong oxidizers (like chlorine or peroxides), which can trigger dangerous reactions or the release of toxic fumes. Handling and Storage Protocols
To ensure workplace safety, follow these handling guidelines typically found on the MSDS:
Protective Gear: Always wear rubber, nitrile, or butyl gloves, chemical splash goggles, and an impervious apron.
Ventilation: Use only with adequate ventilation to prevent the inhalation of mists or vapors.
Storage: Keep containers tightly closed in a cool, dry place. Store separately from incompatible materials such as acids and oxidizers.
Hygiene: Wash hands thoroughly after handling. Ensure emergency eye wash stations and safety showers are easily accessible. Environmental and Disposal Considerations
NALCO 73385 should not be allowed to enter drains, soil, or natural watercourses. Section 13: How to Obtain the Official Nalco
Spills: Small spills should be soaked up with absorbent material. Large spills require diking and reclamation into recovery drums by trained personnel.
Disposal: Dispose of waste and empty containers at an approved waste handling site in accordance with local regulations. Triple-rinse containers before recycling or disposal.
Note: Always consult the official, most current Safety Data Sheet (SDS) provided by the manufacturer for the specific batch of NALCO 73385 being used. HKCT Malaysia Others: NALCO 73385 - HKCT Malaysia
Do not rely on generic sheets. To get the official, legally compliant SDS:
Warning: Many websites claim to host “free MSDS” but may have outdated or manipulated copies. Always download directly from the manufacturer or a verified regulatory database.
This is the most critical section for emergency response. For Nalco 73385, the primary hazards are:
Before opening a drum or programming a chemical feed pump, every facility must have the latest SDS on file. Here is why the Nalco 73385 SDS is indispensable:
Ensure the MSDS you have is no more than 3 years old. Current Nalco Water SDS documents are updated to reflect changes in GHS classifications or formulation adjustments.
Common abbreviations:
| Property | Value | |----------|-------| | Appearance | Clear, colorless to pale yellow liquid | | Odor | Mild, ammonia-like or slightly sulfurous | | pH (100% concentrate) | 12.0 – 13.5 | | Specific gravity | 1.28 – 1.32 @ 20°C | | Boiling point | ~105°C (slight elevation due to salts) | | Freezing point | ~ -5°C (25% solution) | | Viscosity | Low (~10 cPs) | | Solubility in water | Complete |