Acetaldehyde safety data

GHS hazards, precautions, first aid, handling and transport for Acetaldehyde. A classification summary, not a safety data sheet.

CAS 75-07-0Formula C₂H₄O

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

GHS classification

Pictograms, signal word and hazard classes of the GHS classification

Flammable

Harmful or irritant

Serious health hazard

Signal word

Danger

NFPA 704 rating
health, fire, reactivity

Hazard classes and categories

Flam. Liq. 1
Eye Irrit. 2
STOT SE 3 (respiratory irritation)
Muta. 2
Carc. 1A/1B

Hazard statements

H codes grouped by type. Percentages show the share of classification notifications that report the statement

Physical hazards

H224Extremely flammable liquid and vapour.

Health hazards

H319Causes serious eye irritation.
H335May cause respiratory irritation.
H341Suspected of causing genetic defects.
H350May cause cancer.

Precautionary statements

P codes for prevention, response, storage and disposal

Prevention

P203Obtain, read and follow all safety instructions before use.
P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233Keep container tightly closed.
P240Ground and bond container and receiving equipment.
P241Use explosion-proof electrical, ventilating and lighting equipment.
P242Use non-sparking tools.
P243Take action to prevent static discharges.
P261Avoid breathing dust, fume, gas, mist, vapours or spray.
P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
P271Use only outdoors or in a well-ventilated area.
P280Wear protective gloves, protective clothing, eye protection and face protection.

Response

P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P318If exposed or concerned, get medical advice.
P319Get medical help if you feel unwell.
P337 + P317If eye irritation persists: Get medical help.
P370 + P378In case of fire: Use appropriate media to extinguish.

Storage

P403 + P233Store in a well-ventilated place. Keep container tightly closed.
P403 + P235Store in a well-ventilated place. Keep cool.
P405Store locked up.

Disposal

P501Dispose of contents and container in accordance with local regulations.

First aid

General first aid measures. Get medical advice if you feel unwell

If inhaled

IMMEDIATELY leave the contaminated area, take deep breaths of fresh air. IMMEDIATELY call a physician and be prepared to transport the victim to a hospital even if no symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used, if not available, use a level of protection greater than or equal to that advised under Protective Clothing.

Skin contact

IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. IMMEDIATELY call a hospital or poison control center even if no symptoms (such as redness or irritation) develop. IMMEDIATELY transport the victim to a hospital for treatment after washing the affected areas.

Eye contact

First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

If swallowed

DO NOT INDUCE VOMITING. Volatile chemicals have a high risk of being aspirated into the victim's lungs during vomiting which increases the medical problems. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. IMMEDIATELY transport the victim to a hospital. If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. IMMEDIATELY transport the victim to a hospital. OTHER: Since this chemical is a known or suspected carcinogen you should contact…

Handling, storage and disposal

Summaries only, follow the supplier SDS for your grade

Safe handling

Fire: NO open flames, NO sparks and NO smoking. NO contact with hot surfaces. Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT use compressed air for filling, discharging, or handling. Use non-sparking handtools.

General: AVOID ALL CONTACT!

Inhalation: Use ventilation. Use local exhaust or breathing protection.

Skin: Protective gloves.

Eyes: Wear safety goggles or eye protection in combination with breathing protection.

Ingestion: Do not eat, drink, or smoke during work.

Storage

Fireproof. Separated from incompatible materials. See Chemical Dangers. Cooled. Keep in the dark. Store only if stabilized.

Disposal

Generators of waste (equal to or greater than 100 kg/mo) containing this contaminant, EPA hazardous waste number U001, must conform with USEPA regulations in storage, transportation, treatment and disposal of waste. Acetaldehyde is a waste chemical stream constituent which may be subjected to ultimate disposal by controlled incineration.

Exposure limits and toxicity

Occupational exposure limits and toxicity data

OSHA PEL, 8-hour TWA: 200 ppm (360 mg/m³)
ACGIH TLV: Ceiling limit: 25 ppm
IDLH: 2000 ppm (potential occupational carcinogen)

Short-term exposure: The substance is mildly irritating to the eyes, skin and respiratory tract. The substance may cause effects on the central nervous system. Long-term exposure: Repeated or prolonged contact with skin may cause dermatitis. The substance may have effects on the respiratory tract. This may result in tissue lesions. This substance is possibly carcinogenic to humans.

Transport information

UN dangerous goods classification for road, sea and air

UN number: UN 1089
Transport hazard class: 3
Packing group: I

Shipping rules depend on mode, quantity and packaging. Confirm the classification with the supplier SDS and your freight forwarder.

Supplier safety data sheets

SDS documents uploaded by suppliers who list this chemical

No supplier has uploaded an SDS for Acetaldehyde yet. Suppliers usually send one with their quote. Request quotes

Safety questions

Quick answers about handling Acetaldehyde safely

Is Acetaldehyde hazardous?

Acetaldehyde carries the GHS signal word "Danger". Main hazards: extremely flammable liquid and vapour, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

Which GHS pictograms apply to Acetaldehyde?

The GHS classification of Acetaldehyde shows 3 pictograms: GHS02 (flammable), GHS07 (harmful or irritant), GHS08 (serious health hazard).

What is the UN number of Acetaldehyde?

Acetaldehyde is transported under UN 1089, hazard class 3, packing group I. Check the supplier SDS and the current ADR, IMDG or IATA rules before shipping.

How should Acetaldehyde be stored?

Fireproof. Separated from incompatible materials. See Chemical Dangers. Cooled. Keep in the dark. Store only if stabilized.

Where can I get the SDS for Acetaldehyde?

Ask the supplier for the safety data sheet of the exact grade you buy. Suppliers on CompoundList can attach their SDS to listings and send it with a quote. This page is a GHS classification summary, not an SDS.

GHS classification summary, not an SDS. Always check the supplier's SDS. Last updated 7 Oct 2026. Report an error

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