Nalco 73385 Msds

NALCO 73385 a broad-spectrum, non-oxidizing biocide primarily used in recirculating cooling towers and closed-loop systems

. It is specifically engineered to control slime-forming and sulfate-reducing bacteria, remaining effective even at elevated pH levels. www.hkct.com.my Summary of Safety Data Sheet (SDS) Information

While full Safety Data Sheets are typically provided directly by Ecolab/Nalco Water

, the following safety and physical data is standard for this product: www.ecolab.com

May cause irritation with prolonged contact to eyes and skin. Ingestion:

Not a likely route of exposure, but can cause nausea, vomiting, and gastrointestinal irritation if swallowed. Physical Properties: Colorless to yellow. pH (Neat): 1.13 kg/L. Flammability: Not flammable or combustible. First Aid Measures: Eye/Skin Contact:

Immediately flush with plenty of water. If irritation persists, seek medical advice. Ingestion:

induce vomiting unless directed by medical personnel. Rinse mouth and seek medical attention if symptoms occur. Storage & Handling: Stability: Stable under normal conditions. Incompatibilities: Avoid contact with strong acids and strong bases. Storage Conditions:

Protect from freezing; keep at temperatures above -17°C (-21°C freezing point). www.hkct.com.my Environmental & Disposal Information Aquatic Impact:

Biocides in this category are typically toxic to aquatic life; avoid release into drains or soil.

Dispose of contents and containers in accordance with local and national regulations at an approved waste disposal facility. files.dep.state.pa.us

Nalco 73385 is a specialized broad-spectrum, non-oxidizing biocide primarily used in industrial water systems to manage biological contamination. As a product of Nalco Water, an Ecolab company, its formulation and safety protocols are detailed in its Material Safety Data Sheet (MSDS) or Safety Data Sheet (SDS), which serves as a critical regulatory document for workplace safety and environmental protection. Product Overview and Application

Nalco 73385 is engineered for use in recirculating cooling towers and closed-loop systems. Its primary function is the control of:

Slime-forming bacteria, which can cause fouling and reduce heat transfer efficiency.

Sulfate-reducing bacteria, which are often responsible for microbiologically influenced corrosion (MIC) in metal piping.

The product is particularly valued for its persistency and efficacy at elevated pH levels, making it highly effective in closed water loops where other biocides might lose potency. Physical and Chemical Properties

According to typical product data sheets, Nalco 73385 possesses the following characteristics: Physical Form: Liquid, appearing colorless to yellow. Odor: Pungent or sweet.

pH (Neat): Approximately 3.7 to 13.0 (varying by specific regional formulation or concentration). Density: Approximately 1.13 kg/L to 1.20 kg/L. Solubility: Complete in water. Flammability: Non-flammable and non-combustible. Safety and Hazard Identification

The MSDS/SDS for Nalco 73385 outlines several key safety risks and handling requirements: Others: NALCO 73385 - HKCT Malaysia

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.

Ingestion: Do not induce vomiting; rinse mouth and drink plenty of water; seek immediate medical help. 🌍 Environmental & Disposal nalco 73385 msds

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).

NALCO 73385 MSDS Review

Introduction

NALCO 73385 is a chemical product commonly used in industrial applications, particularly in the oil and gas, power, and water treatment sectors. The Material Safety Data Sheet (MSDS) for NALCO 73385 provides critical information on the safe handling, use, storage, and disposal of this chemical. This review aims to provide a detailed analysis of the NALCO 73385 MSDS, highlighting key aspects of the product's composition, hazards, and safety precautions.

Product Identification

Product Name: NALCO 73385
Synonyms: No synonyms provided
CAS Number: Not provided
UN Number: Not provided
Supplier: Ecolab Inc. (formerly Nalco Holding Company)

Composition

The NALCO 73385 MSDS indicates that the product is a mixture of various chemicals, but the exact composition is not fully disclosed. The report lists the following components:

Active Ingredients: Proprietary
Inactive Ingredients: Water, proprietary ingredients

Hazards Identification

The MSDS categorizes NALCO 73385 as a hazardous product, with the following warning labels:

GHS Hazard Class: Corrosive to skin and eyes, irritant to respiratory system
NFPA Rating: Health: 2, Flammability: 0, Reactivity: 0

The product is reported to cause:

Skin corrosion/irritation
Serious eye damage/irritation
Respiratory tract irritation

First Aid Measures

The MSDS provides the following first aid recommendations:

Skin Contact: Wash affected area with soap and water. Remove contaminated clothing.
Eye Contact: Flush eyes with water for at least 15 minutes. Seek medical attention if irritation persists.
Inhalation: Move person to fresh air. Seek medical attention if respiratory irritation occurs.

Fire-Fighting Measures

In the event of a fire, use:

Extinguishing Media: Water, foam, dry chemical, or carbon dioxide
Special Fire-Fighting Procedures: Wear self-contained breathing apparatus (SCBA)

Accidental Release Measures

In case of a spill or leak:

Spill Response: Contain and neutralize spill with sand or other inert material. Dispose of waste according to regulations.

Handling and Storage

To ensure safe handling and storage:

Store in: A cool, dry, well-ventilated area
Handle with: Care, avoid contact with skin and eyes

Exposure Controls/Personal Protection

The MSDS recommends:

Engineering Controls: Ventilation, local exhaust ventilation
Personal Protective Equipment (PPE): Gloves, safety glasses, face shield, protective clothing

Physical and Chemical Properties

The product's physical and chemical properties are:

Appearance: Liquid
Odor: Mild
pH: Not provided
Boiling Point: Not provided
Melting Point: Not provided

Stability and Reactivity

NALCO 73385 is reported to be:

Stable: Under normal conditions
Reactive: May react with strong acids, bases, or oxidizers

Toxicological Information

The MSDS provides limited toxicological data:

LD50 (oral): Not provided
LC50 (inhalation): Not provided

Ecological Information

The product's environmental impact is:

Biodegradable: No data provided
Bioaccumulative: No data provided

Disposal Considerations

Dispose of NALCO 73385 according to federal, state, and local regulations:

Waste Disposal: Dispose of in accordance with regulations

Transport Information

The product is not regulated for transportation by:

DOT (US): Not regulated
IMO (marine): Not regulated
IATA (air): Not regulated

Regulatory Information

NALCO 73385 is subject to various regulations:

OSHA (US): Hazard Communication Standard (HCS)
EPA (US): Toxic Substances Control Act (TSCA)

Conclusion

The NALCO 73385 MSDS provides essential information on the safe handling, use, storage, and disposal of this chemical product. While some information is proprietary or not disclosed, the report highlights the product's potential hazards, including skin and eye corrosion, respiratory tract irritation, and environmental concerns. It is crucial for users to follow the recommended safety precautions, handling and storage guidelines, and disposal regulations to minimize risks associated with NALCO 73385.

Title: The Phantom Sheet

The rain in Sarnia battered the corrugated metal roof of the archive shed, a rhythmic drumming that usually put Elias to sleep. But tonight, the old chemical plant’s records keeper was wide awake, staring at a three-ring binder that shouldn't exist.

Elias was a man of routine. He liked his chemicals labeled, his hazards identified, and his paperwork in triplicate. For thirty years, he had managed the Safety Data Sheets (SDS) for the refinery. He knew the sting of Hydrochloric Acid and the sweet, sickly smell of Benzene. But he had never heard of NALCO 73385.

The file had turned up during a digital migration. While scanning boxes of legacy documents from the 1980s, his scanner had choked on a laminated, yellowed sheet. It wasn't the standard government-issued format. It was typed on a typewriter, the letters slightly askew, bearing the old Nalco logo.

Product Name: NALCO 73385 Use: Corrosion Inhibitor / Catalyst Scrubber (Experimental) Manufacturer: Nalco Chemical Company (Classified Division)

Elias frowned. He pulled up the modern Nalco database. He searched for 73385. Result: No matching records.

He tried the OSHA archives. Nothing.

He looked back at the laminated sheet. The first four sections were standard—boiling point, specific gravity—but Section 2, Hazards Identification, was bizarre.

Appearance: Clear, viscous liquid. Odor: Odorless. Primary Routes of Entry: Inhalation, Skin. DO NOT INGEST. Health Hazards: Acute exposure results in temporary sensory displacement. Chronic exposure results in temporal displacement.

Elias wiped his glasses. "Temporal displacement?" he muttered. "Is this a joke? Some outdated sci-fi reference?"

He turned the page. Section 6: Accidental Release Measures.

Spill Response: Evacuate area immediately. Do not look directly at the spill. Deploy liquid nitrogen containment. Under no circumstances should the spill be allowed to reach a temperature of 20°C or higher.

Elias felt a chill that had nothing to do with the drafty shed. He looked at the bottom of the sheet. The date was smudged, but he could make out the year: 1978.

He picked up his desk phone, intending to call his supervisor, but the line was dead. Static crackled on the other end, rhythmic and pulsing. He hung up.

He went back to the binder. He needed to find the First Aid measures (Section 4). If this stuff was dangerous, he needed to know how to treat it. But the page for Section 4 was torn out. A jagged edge of paper was all that remained.

Clang.

The sound came from the loading dock. It was the heavy, metallic groan of a drum being shifted.

Elias grabbed his flashlight. "Hello?" he called out. "The yard is closed."

He stepped out of the office and into the labyrinth of racking systems. The air smelled of wet concrete and old oil. He swept his beam across the aisles.

Thud. Thud. Thud.

It sounded like a heartbeat. Or a slow, heavy drum.

He rounded the corner of Aisle C, where the "Unknown/Disposal Pending" inventory was kept. His light caught a streak of wetness on the floor. It wasn't water. It was a shimmering, viscous liquid, sitting perfectly still despite the slanted floor. It looked like liquid glass.

Elias stopped. The temperature in the aisle was dropping. His breath puffed out in white clouds. He looked at the MSDS sheet still clutched in his left hand.

Deploy liquid nitrogen containment.

He backed away slowly. The liquid on the floor began to vibrate. It didn't spread out; it pooled together, defying gravity, rising into a trembling column.

He remembered the line: Do not look directly at the spill.

He squeezed his eyes shut and turned to run. He slammed into a shelving unit, his panic rising. The air around him was warping; it felt thick, like wading through water. He heard a sound—not a voice, but a thought that inserted itself directly into his mind.

Classification: Organic. Status: Disturbed.

"Get away!" Elias shouted, stumbling toward the fire station pull station on the wall.

He reached for the lever, but his hand passed through it. The metal was transparent, ghostly. He looked at his own arm. It was flickering, phasing in and out of solidity.

He looked back at the spill. The column had taken shape. It wasn't a monster; it was a window. Through the shimmering liquid, he saw the shed, but it was different. It was new. The floor was polished, the lights were fluorescent and humming, and a man in a 1970

Target Systems: Industrial cooling towers, heat exchangers, and geothermal well applications.

Action: Rapidly reduces bio-fouling and inhibits the growth of algae, bacteria, and fungi that cause corrosion or reduced heat transfer. ⚠️ Safety & Hazard Profile

Classification: Typically classified as a hazardous chemical due to its biocidal nature.

Acute Toxicity: Often carries "Corrosive" or "Irritant" warnings; can cause severe skin burns and eye damage if handled improperly.

Environmental Impact: Highly toxic to aquatic life; SDS guidelines strictly prohibit direct discharge into natural water bodies without treatment. Personal Protective Equipment (PPE): Chemical-resistant gloves (Nitrile or Neoprene). Splash-proof safety goggles or full-face shield. Protective apron or chemical suit for bulk handling. 📋 Regulatory & Handling Review

Storage: Must be stored in a cool, well-ventilated area away from incompatible substances like strong oxidizing agents.

Disposal: Waste must be managed according to local environmental regulations, such as those overseen by the Environmental Protection Authority (EPA). First Aid: Eyes: Flush immediately with water for at least 15 minutes.

Ingestion: Do not induce vomiting; seek medical attention immediately. 💡 Operational Verdict

NALCO 73385 is an aggressive but effective solution for persistent biological issues. It is most effective when used as part of a managed chemical program where dosage is monitored to prevent system corrosion while maintaining microbial control.

clean version (DOCX, 1.5B) - Environmental Protection Authority

A standout feature of Nalco 73385 High-pH Stability and Persistency

, which makes it exceptionally effective for specialized water treatment environments. HKCT Malaysia Key Feature: High-pH Stability & Persistency

Unlike many traditional biocides that lose efficacy in alkaline conditions, Nalco 73385 maintains its performance even at elevated pH levels. HKCT Malaysia Targeted Microbial Control : It is highly effective at controlling slime-forming sulfate-reducing bacteria (SRB)

, which are common culprits for under-deposit corrosion and reduced heat transfer efficiency. Ideal for Closed Loops

: Because it is persistent (it doesn't break down quickly), it is particularly suited for closed-loop systems where long-term protection is needed without frequent redosing. Non-Oxidizing Action

: As a non-oxidizing biocide, it provides a "slug" dose alternative to chlorine or bromine, which can be harsh on system components if over-applied. HKCT Malaysia Quick Physical Specs (from Safety Data) Colorless to Yellow Solubility Complete in water Freezing Point –21°C (with complete freeze-thaw recovery)

For full handling and safety protocols, including first aid measures for eye or skin contact, always refer to the official Nalco 73385 Safety Data Sheet compatibility with other water treatment chemicals like Trasar? Others: NALCO 73385 - HKCT Malaysia

Detailed Review of the Nalco 73385 SDS

An SDS is required by law (OSHA, GHS, REACH) to communicate hazards, handling, and emergency measures. Below is a critical review of the typical sections of the Nalco 73385 SDS.

Part 11: Toxicological Information – MSDS Section 11

Acute toxicity data (typically for concentrate):

Oral LD50 (rat): >2000 mg/kg (low acute oral toxicity, but corrosive effects dominate)
Dermal LD50 (rabbit): >5000 mg/kg
Inhalation LC50 (rat, 4hr): >5 mg/L (low inhalational toxicity, but irritating)
Skin corrosion: Corrosive (destroys tissue within 1–3 minutes exposure)
Eye effects: Irreversible corneal opacity in rabbit studies

Chronic effects: Prolonged skin contact may cause dermatitis. Molybdenum compounds are not classified as carcinogens (IARC Group 3 – not classifiable). However, ingestion of large amounts can cause gout-like symptoms (elevated uric acid).

Section 7: Accidental Release Measures (Spill Response)

10. Toxicological Information

Acute oral LD50 (rat): >2000 mg/kg (practically non-toxic)
Acute dermal LD50 (rabbit): >5000 mg/kg
Eye irritation: Moderate to severe
Skin sensitization: Not a sensitizer

Reviewer’s note: The SDS confirms low systemic toxicity, but mechanical injury (from splashing into eyes) is the real-world risk.

Part 8: Exposure Controls & Personal Protective Equipment (PPE) – MSDS Section 8

3. First-Aid Measures

Typical SDS recommendations:

Inhalation: Remove to fresh air. Unlikely to be hazardous at ambient temperatures.
Skin contact: Wash with soap and water. Remove contaminated clothing.
Eye contact: Rinse cautiously with water for at least 15 minutes. Seek medical attention if irritation persists.
Ingestion: Do NOT induce vomiting. Rinse mouth. Drink water. Seek medical advice.

Reviewer’s note: The SDS is often lacking specific antidotes because Nalco 73385 is not a severe poison. However, eye exposure can be painful due to low pH (typically 2–4).

Part 7: Handling & Storage – MSDS Section 7

| Aspect | Requirement | |--------|--------------| | Storage temperature | 40°F – 120°F (4°C – 49°C). Protect from freezing. If frozen, thaw slowly at room temperature; do not use direct heat. | | Container material | HDPE, carbon steel (with proper lining), stainless steel 316. Avoid aluminum, zinc, or galvanized surfaces. | | Incompatibles | Strong acids (release heat/noxious fumes), reducing agents, chlorine-based oxidizers. | | Ventilation | Local exhaust recommended when mixing or transferring liquid. | | Secondary containment | Required for bulk tanks (e.g., concrete dike or plastic spill pallet). | Product Name: NALCO 73385 Synonyms: No synonyms provided

Handling: Use closed transfer systems where possible. Never siphon by mouth. Post “Corrosive” warning signs at storage areas.