© 2026 Sinochem Nanjing Corporation,
All Right Reserved
Chemical Name: Acetaldoxime
Synonyms: Ethanal oxime, Acetaldehyde oxime
CAS Number: 107-29-9
EC Number: 203-484-3
Molecular Formula: C2H5NO
Molecular Weight: 59.07 g/mol
Recommended Use: Chemical intermediate, laboratory reagent
Manufacturer/Supplier Details: Name, address, and contact phone number of supplier
Emergency Contact: Emergency spill/release, fire, or medical response phone number
GHS Classification: Acute Toxicity (Oral) Category 3, Acute Toxicity (Inhalation) Category 3, Skin Irritation Category 2, Eye Irritation Category 2A
Signal Word: Danger
Hazard Statements: Toxic if swallowed or inhaled. Causes skin and eye irritation.
Pictograms: Skull and crossbones, Exclamation mark
Precautionary Statements: Avoid breathing vapors. Wash thoroughly after handling. Do not eat, drink, or smoke when using this product.
Potential Health Effects: Inhalation may cause irritation of respiratory tract and central nervous system effects such as dizziness or headache. Contact with eyes or skin can lead to pain, redness, and swelling. Swallowing may result in nausea, vomiting, and more severe systemic toxicity.
Target Organs: Central nervous system, liver, kidneys.
Substance: Acetaldoxime
Concentration: ≥99%
Impurities: Water (<1%), trace acetaldehyde
Other Components: None declared
Stabilizers/Inhibitors: None added
Inhalation: Move affected person to fresh air and keep comfortable. Provide oxygen if breathing is difficult. Seek medical attention if symptoms persist.
Skin Contact: Remove contaminated clothing. Wash skin with plenty of soap and water. Seek medical advice if irritation develops or persists.
Eye Contact: Hold eyelids open, rinse gently with water for at least 15 minutes. Remove contact lenses if possible. Seek immediate medical care.
Ingestion: Rinse mouth, do not induce vomiting. Give water only if person is fully conscious. Get medical help immediately.
Most Important Symptoms: Burning sensation, cough, dizziness, weakness, confusion, cyanosis.
Suitable Extinguishing Media: Water spray, alcohol-resistant foam, dry chemical, carbon dioxide.
Unsuitable Media: Direct water jets may spread fire.
Hazardous Combustion Products: Carbon monoxide, nitrogen oxides, toxic fumes.
Advice for Firefighters: Wear self-contained breathing apparatus and protective clothing. Use water spray to cool unopened containers.
Flammability: May form flammable vapors. Vapors may travel and ignite.
Special Hazards: Sealed containers may rupture with explosive force when heated.
Fire Fighting Instructions: Evacuate area. Prevent runoff from entering drains or waterways.
Personal Precautions: Evacuate unnecessary personnel. Ventilate area. Use recommended personal protective equipment including gloves, goggles, and properly fitted respirators.
Environmental Precautions: Prevent from entering sewers, basements, or waterways. Notify authorities in case of large spills.
Methods for Containment: Contain spill with non-combustible absorbent materials (sand, earth, vermiculite).
Cleanup Procedures: Collect and place in properly labeled containers for disposal. Clean area thoroughly after material pickup. Wash spill site after material removal. Dispose of waste according to local regulations.
Decontamination: Use dilute bleach solution if available, as oximes can degrade in oxidizing conditions.
Handling: Work in well-ventilated areas, away from sources of heat, spark, and flame. Use explosion-proof equipment. Avoid contact with skin, eyes, and clothing. Do not breathe vapors or dust.
Storage Conditions: Store in tightly sealed containers, in a cool, dry, and well-ventilated place. Store away from oxidizing materials, acids, and bases. Protect from direct sunlight.
Incompatible Materials: Strong oxidizers, acids, and alkalis.
Specific End Uses: Used only as an intermediate or laboratory chemical; not for direct consumer use.
Occupational Exposure Limit Values: No established OSHA/ACGIH exposure limits. Handle with caution regardless.
Engineering Controls: Use local exhaust ventilation. Maintain eye wash station and safety shower in work area.
Personal Protective Equipment: Chemical-resistant gloves (nitrile, neoprene), lab coat or coveralls, safety goggles, face shield for splash risk, NIOSH/MSHA approved respirator for airborne concentrations.
Hygiene Measures: Wash hands after handling. Remove contaminated clothing and wash before reuse. Do not eat, drink or smoke in areas of use.
Appearance: Colorless to pale yellow liquid
Odor: Characteristic, pungent
Odor Threshold: Not available
pH: Weakly basic (aqueous solution)
Melting Point: Approximately −40°C
Boiling Point: 82–83°C
Flash Point: 20°C (closed cup)
Evaporation Rate: Data not available
Flammability: Flammable in presence of open flame or heat
Upper/Lower Explosion Limits: Not determined
Vapor Pressure: 13 mmHg at 25°C
Vapor Density: 2.04 (air = 1)
Relative Density: 0.99 g/cm³ at 20°C
Solubility: Miscible with water, ethanol, ether
Partition Coefficient (n-octanol/water): Not available
Auto-Ignition Temperature: Not determined
Viscosity: Not available
Decomposition Temperature: Not available
Chemical Stability: Stable under recommended storage conditions.
Reactivity: Reacts with strong oxidizing agents, acids, and alkalis.
Conditions to Avoid: Heat, flames, sparks, sunlight, incompatible substances.
Incompatible Materials: Strong oxidizers, acids, alkali metals.
Hazardous Decomposition Products: Carbon oxides, nitrogen oxides, acetic acid, toxic vapors.
Polymerization: Not expected under normal conditions.
Routes of Exposure: Inhalation, skin contact, eye contact, ingestion
Acute Toxicity: Oral (Rat) LD50: ~100 mg/kg. Inhalation (Rat) LC50: ~200 ppm/4h.
Skin Corrosion/Irritation: May cause skin irritation or dermatitis.
Serious Eye Damage/Irritation: Causes eye irritation.
Respiratory/Skin Sensitization: Not established, but use caution.
Germ Cell Mutagenicity: Data insufficient.
Carcinogenicity: Not classified as carcinogenic by IARC, NTP, or OSHA.
Reproductive Toxicity: Insufficient data for classification.
Specific Target Organ Toxicity: May affect central nervous system, liver, and kidneys on prolonged or repeated exposures.
Aspiration Hazard: Not specifically identified.
Ecotoxicity: May be toxic to aquatic organisms at high concentrations.
Persistence and Degradability: Expected to be biodegradable under environmental conditions.
Bioaccumulative Potential: Low bioconcentration expected.
Mobility in Soil: Likely to be mobile due to water solubility.
Other Adverse Effects: Not identified for normal industrial or laboratory handling, but avoid uncontrolled releases.
Avoid discharge into waterways.
Waste Treatment Methods: Collect waste and residues in closed, labeled containers.
Disposal of Product: Hand over to an approved chemical waste disposal facility.
Disposal of Packaging: Contaminated packaging should be disposed of as hazardous waste.
Special Precautions: Do not dispose to drains or environment. Incinerate in accordance with local, regional, national, and international regulations.
Regulations: Comply with all national and local regulations regarding chemical waste.
UN Number: 2333
UN Proper Shipping Name: Acetaldoxime
Transport Hazard Class: 6.1 (Toxic substances)
Packing Group: II (Medium Danger)
Labels: Toxic
Environmental Hazards: No additional hazards specified
Special Precautions for User: Ensure containers are tightly closed and upright. Check seals before transport. Follow protocols for hazardous material transportation.
Land Transport (ADR/RID): Class 6.1, Packing Group II
Sea Transport (IMDG): Class 6.1, Packing Group II
Air Transport (ICAO/IATA): Class 6.1, Packing Group II
OSHA: Not specifically listed as hazardous but falls under general duty for hazardous chemical handling.
TSCA: Listed in the TSCA inventory.
REACH: Registered or pre-registered as required within the EU.
SARA Title III: Not listed as an extremely hazardous substance.
California Proposition 65: Not listed.
Other Regulations: Follow national, regional, and local regulations for storage, use, and disposal. Consult chemical safety regulations for workplace controls.
