EAST CHEM Ammonium thiocyanate

1. Product Identification

• Product Name: Ammonium Thiocyanate
• CAS Number: 1762-95-4
• Molecular Formula: NH₄SCN
• Molecular Weight: 76.12 g/mol
• Synonyms: Ammonium rhodanide; Ammonium sulfocyanate; Thiocyanic acid ammonium salt
• Product Code: [Insert Custom Product Code, e.g., ATS-001]

2. Physical and Chemical Properties

3. Safety Information

3.1 Hazard Identification

• GHS Hazard Statements:
  • H302: Harmful if swallowed
  • H315: Causes skin irritation
  • H319: Causes serious eye irritation
  • H335: May cause respiratory irritation
  • H412: Harmful to aquatic life with long-lasting effects
• GHS Precautionary Statements:
  • P261: Avoid breathing dust/fume/gas/mist/vapors/spray
  • P264: Wash hands thoroughly after handling
  • P270: Do not eat, drink or smoke when using this product
  • P280: Wear protective gloves, eye protection/face protection
  • P301+P312: IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
  • P302+P352: IF ON SKIN: Wash with plenty of soap and water
  • P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing
  • P337+P313: If eye irritation persists: Get medical advice/attention
  • P501: Dispose of contents/container to an approved waste disposal plant

3.2 First-Aid Measures

• Inhalation: Move victim to fresh air. If breathing is difficult, give oxygen (by qualified personnel). Seek medical attention immediately if irritation or breathing issues persist.
• Skin Contact: Remove contaminated clothing. Rinse affected skin with plenty of soap and water for at least 15 minutes. If irritation (redness, itching, burning) occurs, seek medical help.
• Eye Contact: Immediately flush eyes with a steady stream of water for at least 15 minutes, keeping eyelids fully open. Remove contact lenses (if applicable) after initial rinsing. Seek emergency medical care promptly.
• Ingestion: Do NOT induce vomiting (risk of aspiration). Give 1-2 glasses of water to dilute (if victim is conscious and able to swallow). Immediately call a poison control center or hospital, and bring this TDS for reference.

3.3 Fire-Fighting Measures

• Suitable Extinguishing Media: Dry chemical powder, carbon dioxide (CO₂), foam, water spray (to cool containers).
• Unsuitable Extinguishing Media: High-pressure water jet (may disperse dust and spread hazards).
• Hazardous Combustion/Decomposition Products: During thermal decomposition (above 170 °C), releases toxic gases: ammonia (NH₃), hydrogen cyanide (HCN), sulfur oxides (SOₓ), and nitrogen oxides (NOₓ).
• Fire-Fighting Precautions: Firefighters must wear full protective equipment (including a self-contained breathing apparatus, SCBA) to avoid exposure to toxic fumes. Cool adjacent containers with water spray to prevent decomposition.

3.4 Accidental Release Measures

• Personal Precautions: Wear appropriate PPE (dust mask, nitrile gloves, safety goggles, chemical apron) to avoid direct contact or inhalation. Ensure the area is well-ventilated.
• Environmental Precautions: Prevent spilled material from entering drains, sewers, rivers, or soil (risk to aquatic life).
• Clean-Up Methods: Sweep up spilled powder carefully (use a dustpan and brush; avoid generating dust) and transfer to a sealed, labeled hazardous waste container. Vacuum with a HEPA-filtered vacuum (if available) for residual dust. Wash contaminated surfaces with water and detergent; collect washwater for proper disposal (do not discharge to environment).

4. Handling and Storage

4.1 Handling Precautions

• Handle in a well-ventilated area (preferably under a fume hood if dust is generated).
• Avoid creating dust; use closed systems or dust-suppression measures (e.g., wetting) when transferring.
• Do not mix with strong oxidizers, acids, or heavy metals (risk of hazardous reactions).
• Wash hands, face, and exposed skin thoroughly after handling; avoid touching eyes or mouth with contaminated hands.

4.2 Storage Conditions

• Store in a cool, dry, well-ventilated warehouse (temperature: 15-30 °C; relative humidity: <60%).
• Keep in original, tightly sealed containers (e.g., HDPE drums or fiber drums lined with polyethylene) to prevent hygroscopic caking and contamination.
• Store separately from incompatible materials: strong oxidizers (e.g., potassium permanganate, hydrogen peroxide), strong acids (e.g., sulfuric acid, nitric acid), and heavy metal salts (e.g., copper sulfate).
• Do not store near food, feed, or consumer products to avoid cross-contamination.
• Label storage areas clearly with "Hazardous Chemical" and "Keep Dry" signs.

5. Exposure Controls and Personal Protection (EC/PP)

• Engineering Controls: Install local exhaust ventilation (LEV) to capture dust and prevent inhalation. Ensure general ventilation maintains air quality.
• Personal Protective Equipment (PPE):
  • Respiratory Protection: Wear a NIOSH-approved dust mask (N95 or higher) when dust is present; use a powered air-purifying respirator (PAPR) for high dust concentrations.
  • Eye Protection: Wear chemical safety goggles (ANSI Z87.1 compliant) or a face shield (for large spills) to prevent eye contact.
  • Skin Protection: Wear nitrile gloves (thickness ≥0.1 mm) or neoprene gloves (resistant to ammonium thiocyanate). Use a chemical-resistant apron if splashing is possible.
  • Clothing: Wear long-sleeved shirts, long pants, and closed-toe shoes to cover exposed skin.
• Hygiene Measures: Provide wash stations with soap and water near the work area. Prohibit eating, drinking, or smoking in the handling/storage zone. Launder contaminated clothing separately before reuse.

6. Stability and Reactivity

• Stability: Stable under normal handling and storage conditions (cool, dry, sealed). Decomposes when heated above 170 °C or exposed to strong acids/oxidizers.
• Conditions to Avoid: High temperature, moisture (hygroscopicity), strong oxidizers, strong acids, and heavy metal ions.
• Incompatible Substances:
  • Strong oxidizers (e.g., KMnO₄, H₂O₂): May cause combustion or explosion.
  • Strong acids (e.g., H₂SO₄, HNO₃): Reacts to release toxic hydrogen thiocyanate (HSCN) gas.
  • Heavy metals (e.g., Cu²⁺, Fe³⁺): Forms insoluble thiocyanate salts and may catalyze decomposition.
• Hazardous Polymerization: Does not occur.

7. Toxicological Information

• Acute Toxicity:
  • Oral LD₅₀ (rat): ~764 mg/kg (moderately toxic if swallowed).
  • Dermal LD₅₀ (rabbit): >2000 mg/kg (low dermal toxicity, but causes irritation).
  • Inhalation LC₅₀ (rat): No data available; dust causes respiratory irritation.
• Chronic Toxicity: Long-term exposure to high dust concentrations may cause thyroid dysfunction (interferes with iodine uptake) and liver/kidney damage (animal studies).
• Sensitization: No evidence of skin sensitization in standard tests, but repeated contact may cause chronic irritation.
• Carcinogenicity: Not classified as a carcinogen by IARC, EPA, or EU CLP.

8. Ecological Information

• Aquatic Toxicity: Harmful to aquatic organisms.
  • Fish LC₅₀ (zebrafish, 96h): ~50 mg/L (moderately toxic).
  • Algae EC₅₀ (Chlorella vulgaris, 72h): ~30 mg/L (toxic to primary producers).
• Persistence and Degradability: Moderately persistent in water; biodegradation is slow under aerobic conditions (half-life >60 days in natural water).
• Bioaccumulation: Low bioaccumulation potential (log Koc: ~1.5; does not accumulate in aquatic food chains).
• Environmental Impact: Avoid release to water bodies (risk of aquatic ecosystem disruption).

9. Disposal Considerations

• Waste Classification: Classified as hazardous waste (due to toxicity to aquatic life and human health risks).
• Disposal Method: Dispose of in accordance with local, regional, and national regulations (e.g., EPA RCRA in the US, EU Waste Framework Directive). Incinerate at a licensed hazardous waste incineration facility equipped to treat sulfur- and nitrogen-containing emissions.
• Container Disposal: Rinse empty containers thoroughly with water (collect rinsewater for disposal). Do not reuse containers for non-hazardous purposes. Dispose of rinsed containers as hazardous waste or recycle if permitted by local regulations.

10. Transport Information

• UN Number: UN 2811 (Toxic solids, organic, n.o.s.)
• Transport Hazard Class: 6.1 (Toxic substances)
• Packing Group: III (Lowest hazard within Class 6.1)
• Packaging Requirements: Use UN-approved packaging (e.g., 50 kg HDPE drums with screw caps, or fiber drums lined with polyethylene bags). Ensure packages are leak-proof and labeled.
• Transport Precautions:
  • Avoid exposure to moisture, heat, and direct sunlight during transport.
  • Do not ship with food, feed, or incompatible substances (oxidizers, acids).
  • Label packages with hazard symbols (GHS Class 6.1: Skull and Crossbones or Exclamation Mark) and transport documents (e.g., MSDS/TDS, shipping manifest).

11. Regulatory Information

• EU: Complies with REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) – registered under REACH (if applicable). Classified per CLP Regulation (EC) No. 1272/2008.
• US: Listed on the TSCA (Toxic Substances Control Act) Inventory. Complies with OSHA Hazard Communication Standard (29 CFR 1910.1200).
• Other Regions: Comply with local chemical management regulations (e.g., China GB standards, Japan MITI, Australia NPI).

12. Other Information

• Revision Date: [Insert Date, e.g., October 2024]
• Responsible Party: [Insert Company Name, Address, Phone Number, Email, and Emergency Contact]
• Disclaimer: This TDS is based on current scientific data and industry standards. It does not constitute a guarantee of product performance or safety for unintended uses. Users are responsible for conducting their own risk assessments and complying with all applicable laws/regulations before use.