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Product Name: Dimethoate Pestanal
Chemical Name: O,O-Dimethyl S-(N-methylcarbamoylmethyl)phosphorodithioate
CAS Number: 60-51-5
Manufacturer: Merck KGaA
Recommended Use: Laboratory analysis, pesticide research
Emergency Phone Number: Refer to local poison control center
Synonyms: Rogor, Cygon, Demet
Product Code: As determined by the supplier; reference for purchase or inventory
Contact Details: Facility address, telephone, and email provided by supplier documentation
GHS Classification: Acute toxicity oral Category 3, acute toxicity dermal Category 3, acute toxicity inhalation Category 3, serious eye irritation Category 2A, hazardous to aquatic environment – acute Category 1
Signal Word: Danger
Hazard Statements: Toxic if swallowed, toxic in contact with skin, toxic if inhaled, causes serious eye irritation, very toxic to aquatic life
Pictograms: Skull and crossbones, exclamation mark, environment
Precautionary Statements: Avoid breathing dust or fumes, wash exposed skin thoroughly after handling, use only outdoors or in well-ventilated area, wear protective gloves, protective clothing, eye protection, avoid release to environment
Main Ingredient: Dimethoate
Chemical Formula: C5H12NO3PS2
Concentration: Pure substance or as indicated on product packaging
Impurities: Formulation aids or trace contaminants as detailed in product certificate
Other Components: None notable in analytical grade; refer to batch analysis for trace content
Inhalation: Remove affected person to fresh air, provide artificial respiration if needed, seek immediate medical advice
Ingestion: Rinse mouth, do not induce vomiting, immediate medical attention required
Skin Contact: Remove contaminated clothing, wash skin thoroughly with soap and water
Eye Contact: Rinse cautiously with water for at least 15 minutes, remove contact lenses if present, consult an eye specialist
Most Important Symptoms: Nausea, vomiting, sweating, salivation, miosis, muscle weakness, respiratory distress
Notes for Physicians: Monitor cholinesterase levels, administer atropine and pralidoxime if symptoms present as per clinical guidelines
Suitable Extinguishing Media: Water spray, dry chemical, foam, carbon dioxide
Unsuitable Extinguishing Media: Direct water jet can scatter chemical, avoid high-pressure streams
Hazardous Combustion Products: Phosphorous oxides, sulfur oxides, nitrogen oxides, carbon oxides
Protective Equipment for Firefighters: Self-contained breathing apparatus, chemical protective clothing
Special Firefighting Procedures: Move containers from fire area if it can be done without risk, cool with water spray
Personal Precautions: Evacuate area, ventilate, avoid inhalation and skin contact
Protective Equipment: Chemical resistant gloves, safety goggles, lab coat, respirator as required
Environmental Precautions: Prevent entry into waterways, drains, and soil; contain spill using non-combustible absorbent materials
Clean-up Methods: Collect spilled material mechanically, place in proper waste container for disposal, decontaminate spill site with detergent and large wastewater flow
Safe Handling Advice: Use with local exhaust ventilation or in fume hood, keep container tightly closed when not in use, avoid contact with eyes, skin, and clothing
Hygiene Measures: Wash hands and face before eating, drinking, or smoking
Storage Conditions: Store in cool, dry, well-ventilated original container, away from incompatible substances such as strong oxidizers, acids, and bases
Storage Temperature: Do not store above 30°C, avoid exposure to sunlight
Packaging Material: Use containers approved for chemical products, with secure lids to prevent leakage
Exposure Limits: ACGIH TLV: 0.1 mg/m³ (inhalable fraction and vapor, as dimethoate)
Engineering Controls: Mechanical ventilation, fume hood
Personal Protection – Eyes: Chemical safety goggles
Personal Protection – Skin: Nitrile or neoprene gloves, long-sleeved clothing
Personal Protection – Respiratory: NIOSH approved respirator in absence of adequate ventilation
Work Practice Controls: Do not eat, drink, or smoke while handling
Environmental Exposure Controls: Prevent chemical discharge into drains or natural waters
Appearance: Colorless to amber liquid (technical grade: crystalline or powder)
Odor: Slightly mercaptan-like, sulfurous
Odor Threshold: Not well established
pH: 3.5 to 7 (1% solution)
Melting Point: 6°C
Boiling Point: 117°C at 0.05 mmHg
Flash Point: 194°C (closed cup)
Evaporation Rate: Not established
Flammability: Not highly flammable
Vapor Pressure: 1 x 10-4 mmHg at 25°C
Vapor Density: Heavier than air
Solubility: Moderately soluble in water, highly soluble in most organic solvents
Partition Coefficient (log Kow): 0.704
Decomposition Temperature: Degrades above 60°C
Viscosity: Not well documented
Chemical Stability: Stable under recommended storage conditions
Reactivity: Reacts with strong oxidizers and acids
Hazardous Reactions: May decompose on exposure to heat, releasing toxic fumes
Incompatible Materials: Strong acids, strong bases, oxidizing agents
Conditions to Avoid: Excessive heat, open flame, moisture
Hazardous Decomposition Products: Phosphorous oxides, sulfur oxides, nitrogen oxides, carbon monoxide/dioxide
Routes of Exposure: Inhalation, skin absorption, ingestion, eye contact
Acute Toxicity: Oral LD50 (rat): 160 mg/kg; Dermal LD50 (rat): 400 mg/kg
Chronic Effects: Prolonged exposure affects nervous system, cholinesterase inhibition
Symptoms: Headache, dizziness, nausea, miosis, muscle twitch, confusion, respiratory depression
Carcinogenicity: Not classed as carcinogen by IARC or US EPA
Mutagenicity: Evidence inconclusive; some studies suggest weak mutagenic effects
Reproductive Toxicity: High exposures may affect reproductive health based on animal studies
Target Organs: Nervous system, respiratory system
Toxicity to Aquatic Life: Very toxic to fish and aquatic invertebrates (LC50 < 1 mg/L for many species)
Persistence and Degradability: Degrades in soil and water by hydrolysis and microbial action; half-life in soil can range from several days to weeks depending on conditions
Bioaccumulation Potential: Low to moderate based on log Kow values
Mobility in Soil: Moderately mobile; risk of leaching into groundwater
Other Adverse Effects: Harmful to bees and beneficial insects, risk of acute damage to soil microorganisms, plants, and amphibians in treated areas
Product Waste: Treat as hazardous waste, incinerate in approved chemical incinerator with afterburner and scrubber, do not landfill or drain into waterway
Contaminated Packaging: Rinse thoroughly, treat rinse water as hazardous, dispose via licensed hazardous waste contractor
Waste Codes: Refer to local and national environmental regulations for specific waste codes
Precautions for Disposal: Avoid all contact with skin and environment during handling, document waste disposal at every stage as per regulatory guidelines
UN Number: 2783
Proper Shipping Name: Organophosphorus Pesticide, Liquid, Toxic (Dimethoate)
Transport Hazard Class: 6.1 (Toxic substances)
Packing Group: II
Environmental Hazards: Marine pollutant
Special Precautions: Clearly label containers, transport in upright position, carry documentation, restrict access to trained personnel only
Regulatory References: Compliance with IATA, IMDG, ADR, DOT as relevant in shipment region
Labeling Requirements: GHS hazard pictograms, signal word "Danger", required hazard statements
Poison Schedule: Listed as a restricted use pesticide in many countries
Inventory Status: Listed on TSCA (US), EINECS/ELINCS (EU), DSL (Canada), AICS (Australia), as per exporter/importer requirements
Other Regulations: Comply with workplace safety standards: OSHA (US), WHMIS (Canada), REACH/CLP (EU)
Community Right to Know: Subject to SARA Title III reporting in US, subject to notification and registration under Plant Protection Product regulation in EU
Occupational Safety: Employers must provide training, PPE, and conduct medical surveillance of workers with potential exposure
