Nalco 8506 Plus is a surfactant-based biodetergent designed to maintain heat transfer efficiency and control microbiological growth in open recirculating cooling systems. Safety & Hazards Summary
According to the Nalco 8506 Plus Safety Data Sheet, the product carries the following hazard profile:
Primary Risks: Causes serious eye damage and skin irritation.
Inhalation: Prolonged inhalation of vapors may be harmful and can cause nausea, dizziness, or central nervous system depression at high concentrations.
Environmental: This product is toxic to fish and must not be discharged directly into public waterways, lakes, or streams.
Combustibility: It is classified as combustible with a flash point of 197°F (92°C). Handling & Storage
Protective Equipment: Wear chemical splash goggles, rubber gloves, and a face shield when handling the neat product. Material Compatibility:
Use: PVC, polyethylene (PE), Teflon, or stainless steel for storage and application equipment.
Avoid: Aluminum, brass, or carbon steel, as these may react with the product.
Incompatibilities: Keep away from strong oxidizers (e.g., chlorine, peroxides, chromates) to prevent heat, fires, or toxic vapor generation.
Storage: Store in a cool, well-ventilated area in tightly closed, original containers. First Aid Measures
Eye Contact: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing and call a physician immediately.
Skin Contact: Remove contaminated clothing and rinse skin with water or shower.
Ingestion: Rinse mouth. Do not induce vomiting. Seek medical attention immediately.
Inhalation: Remove the person to fresh air and keep them comfortable for breathing. Regulatory Information
Nalco 8506 Plus is NSF Registered (Category G7), meaning it is acceptable for treating cooling systems where treated water or steam does not contact edible products. NALCO 8506 PLUS Safety Data Sheet | PDF | Toxicity - Scribd
This paper summarizes the safety, handling, and technical specifications for NALCO 8506 PLUS
, a liquid biodetergent used primarily in cooling water systems. Product Overview NALCO 8506 PLUS
is a surfactant-based biodetergent designed for open recirculating cooling systems. It is used to prevent microbiological growth and fouling by dispersing oils, hydrocarbons, and silt deposits, which helps maintain heat transfer efficiency. 1. Physical and Chemical Properties nalco 8506 plus msds
According to the safety data sheet (SDS), the product exhibits the following typical physical characteristics: Appearance: Liquid. pH: 7.2 (Neutral). Relative Density: 1.0675 at 20 °C. Viscosity: 147.5 mPa.s at 20 °C. Flash Point: > 100 °C. Solubility: Similar vapor pressure to water. 2. Hazard Identification
The product is characterized by moderate potential human hazards.
Acute Effects: Can cause moderate irritation to the eyes and skin. Inhalation of high concentrations may lead to nausea, dizziness, or central nervous system depression.
Chronic Effects: Prolonged skin contact may cause defatting, leading to dry skin and dermatitis.
Environmental Impact: It is noted as toxic to fish and should not be discharged directly into public waterways. 3. Handling and Storage
Safety precautions are critical when managing this chemical:
Personal Protective Equipment (PPE): Goggles and rubber (or impermeable) gloves are recommended during handling.
Storage: Keep containers tightly closed in a cool, well-ventilated area. Store separately from oxidizers (like chlorine or peroxides) and acids, as contact can generate heat or toxic vapors.
Material Compatibility: Use PVC, PE, Teflon, or Stainless Steel for storage and application equipment. Avoid using Aluminum, Brass, or Carbon steel in contact with the neat product. 4. First Aid Measures
Eye/Skin Contact: Immediately flush with water for at least 15 minutes. For large splashes, use a safety shower.
Ingestion: Do not induce vomiting. Give water and call a physician immediately.
Inhalation: Remove the individual to fresh air and treat symptoms. 5. Regulatory and Official Documents NALCO 8506 PLUS
is registered as a nonfood compound by NSF International, making it acceptable for treating boilers or cooling systems where treated water does not contact food products.
For the most current and official Safety Data Sheet (SDS), users should request documents directly through the Nalco Water SDS Request Form provided by Ecolab. 8506 SDS (GHS) | PDF | Toxicity | Magnesium - Scribd
Nalco 8506 Plus is a high-performance biodetergent specifically designed for open recirculating cooling systems. It is primarily used to prevent microbiological growth, disperse oils and hydrocarbons, and improve the effectiveness of other biocides by penetrating slime and silt deposits. Safety & Hazards (MSDS Highlights)
The Safety Data Sheet (SDS) for Nalco 8506 Plus identifies it as a chemical that requires careful handling. Key hazard information from official documentation includes:
Primary Hazards: It is classified as causing moderate irritation to the skin and eyes. Health Effects:
Inhalation: Prolonged breathing of vapors may be harmful and can cause nausea, dizziness, or vomiting at high concentrations. Nalco 8506 Plus is a surfactant-based biodetergent designed
Ingestion: Can cause central nervous system depression, nausea, and vomiting.
Flammability: It is considered combustible and should be kept away from heat and open flames.
Stability: Stable under normal conditions, but contact with strong oxidizers (like chlorine or nitric acid) can generate toxic fumes, heat, or fires. Technical Specifications Typical Value Appearance Clear, light yellow liquid pH Approximately 7.2 Flash Point
> 100 °C (212 °F) or 197 °F (PMCC) depending on testing standard Specific Gravity 0.84 at 77 °F Solubility Similar vapor pressure to water Handling & Storage Recommendations
Personal Protective Equipment (PPE): Standard precautions include wearing chemical splash goggles and rubber gloves.
Material Compatibility: Storage and application equipment (pumps/lines) should be made of PVC, PE, Teflon, or Stainless Steel.
Materials to Avoid: Do not use Aluminum, Brass, or Carbon Steel for contact with the neat product.
Food Processing Areas: The product is NSF registered (Category G5, G7) for use in treating cooling and retort water in food processing facilities, provided there is no direct contact with edible products. Procurement & Official Documents
You can view or request official safety documentation through the following sources:
Manufacturer Portal: Nalco Water safety data sheets are typically requested directly through the Ecolab SDS Portal or via a local sales representative.
Industrial Suppliers: Large-scale quantities are available through industrial chemical distributors such as ECSA Chemicals. NALCO 8506 PLUS Safety Data Sheet | PDF | Toxicity - Scribd
NALCO 8506 PLUS is a surfactant-based biodetergent used primarily in open recirculating cooling systems to maintain heat transfer efficiency and control microbiological growth
Below is the detailed content based on the Safety Data Sheet (SDS) for this product. 1. Identification and Product Overview Product Name: NALCO 8506 PLUS Primary Use: Cooling water biodetergent and oil/hydrocarbon dispersant.
Prevents fouling and microbial corrosion; improves biocide penetration into slime and silt deposits. NSF Registration:
Acceptable for treating boilers and cooling systems (G7) in food processing areas, provided there is no contact with edible products. 2. Hazard Identification Primary Hazards: Causes irritation to skin and eyes. Inhalation:
Prolonged inhalation of vapors may be harmful and can cause central nervous system depression, nausea, dizziness, or vomiting. Ingestion:
May cause nausea, dizziness, or unconsciousness depending on exposure levels. Chronic Effects:
Prolonged skin contact can cause defatting, leading to irritation and dermatitis. files.dep.state.pa.us 3. Physical and Chemical Properties Appearance: Characteristic. 7.2 (at 20 °C). Relative Density: Flash Point: > 100 °C (Combustible). Vapour Pressure: Similar to water. files.dep.state.pa.us 4. Handling and Storage Equipment Compatibility: Stop the leak if safe to do so
Use PVC, PE, Teflon, or Stainless Steel for storage and application equipment (pumps/lines). Prohibited Materials:
use Aluminum, Brass, or Carbon Steel in contact with the neat product. Safety Precautions: Wear safety goggles and rubber gloves during handling.
Provide facilities for quick drenching or flushing of eyes and body in case of contact.
Keep containers closed when not in use and away from heat or open flames. 5. First Aid Measures Eye/Skin Contact:
Flush immediately with plenty of water. Remove and wash contaminated clothing before reuse. Inhalation:
Move to fresh air. If symptoms like dizziness or nausea persist, seek medical attention. Ingestion:
Do not take internally. Consult a physician immediately if ingested. files.dep.state.pa.us
For the most current and official safety information, you can request the specific document through the Nalco Water SDS Request Form provided by 8506 SDS (GHS) | PDF | Toxicity | Magnesium - Scribd
Environmental Warning: Do not flush into surface water or sanitary sewer system. The phosphonate content can cause eutrophication (algae blooms) in natural waters, and the low pH is acutely toxic to aquatic life.
The SDS establishes Occupational Exposure Limits (OELs). Since Nalco 8506 Plus is a mixture, the limits are based on its components.
| Component | OSHA PEL | ACGIH TLV | | :--- | :--- | :--- | | Sulfuric acid | 1 mg/m³ | 0.2 mg/m³ (thoracic) | | Phosphoric acid | 1 mg/m³ | 1 mg/m³ |
Given that Nalco 8506 Plus is a liquid with low vapor pressure, inhalation risk primarily comes from mists created during high-speed mixing, tank filling, or spray applications.
Recommended PPE Ensemble:
Stable under normal storage conditions but decomposes when heated.
Published: April 11, 2026 | Category: Chemical Safety & Water Treatment
If you work in water treatment, cooling tower maintenance, or industrial boiler systems, you’ve likely encountered NALCO 8506 Plus. Known as a scale and deposit inhibitor, this chemical is highly effective at controlling fouling in industrial water systems. However, effective use begins with understanding its potential hazards—which is why the Material Safety Data Sheet (MSDS) is your most critical first read.
In this post, we’ll break down what NALCO 8506 Plus is, the key safety information found in its MSDS, and how to handle it responsibly.