Acrolein|CAS,107-02-8

Acrolein|CAS,107-02-8

Basic Information

Chemical Name: Acrolein

Synonyms: 2-Propenal, Acrylaldehyde, Allyl aldehyde

CAS Number: 107-02-8

Molecular Formula: C3H4O

Molecular Structure: CH₂=CH-CHO

Molecular Weight: 56.06 g/mol

Assay≧98%

Water Content≦3.5%

Density@20℃ 0.84

Key Physical and Chemical Properties

Appearance: Colorless or yellowish transparent liquid with a pungent, irritating, and suffocating odor.

Boiling Point: 52.5℃

Melting Point: -87.7℃

Density: 0.839 g/cm³

Solubility: Miscible with water, ethanol, ether, and other organic solvents.

Reactivity: Highly unsaturated and very reactive. Both the carbon-carbon double bond and the aldehyde group are reactive sites. It polymerizes readily (requires inhibitor for storage) and is easily oxidized.

Primary Uses

1.Chemical Intermediate: An important raw material for organic synthesis, used to produce methionine (a feed additive), acrylic acid, pyridine, glycerol, 3-methylpyridine, and various other chemicals.

2.Biocide in Water Treatment: Used as a potent, broad-spectrum biocide to control bacteria, algae, and mollusks in industrial cooling water systems and oilfield injection water.

3.Laboratory Reagent: Used in organic synthesis and analysis.

4.Historical Use: Formerly used as a chemical warfare agent (lachrymator).

Health Hazards and Safety (Extremely Important)

Acrolein is a highly toxic and hazardous chemical with multiple dangers:

Acute Toxicity: LD50 (rat, oral) is approximately 26 mg/kg, classifying it as a highly toxic substance.

Powerful Irritant:

Eyes/Respiratory Tract: Vapors are extremely irritating and corrosive to the eyes, nose, and respiratory tract, causing immediate lacrimation, pain, and inflammation upon exposure. High concentrations can lead to pulmonary edema and severe damage.

Skin: The liquid can cause severe skin irritation and chemical burns.

Carcinogenicity: Classified by the International Agency for Research on Cancer (IARC) as Group 2A (probably carcinogenic to humans). There is sufficient evidence for carcinogenicity in animals.

Environmental Toxicity: Very toxic to aquatic life.

Safe Handling and Storage

Ventilation: Must be handled in a well-ventilated fume hood or within a closed system.

Personal Protective Equipment (PPE): Essential PPE includes chemical safety goggles, chemical-resistant gloves (e.g., butyl rubber), protective clothing, and appropriate respiratory protection (e.g., a full-face respirator).

Storage: Store in a cool, well-ventilated area away from heat and ignition sources. Typically stored with an inhibitor (e.g., hydroquinone) to prevent spontaneous polymerization. Storage containers should be made of stainless steel or have a Teflon lining.

Fire/Explosion Hazard: Flammable liquid. Its vapors can form explosive mixtures with air.

Spill Response

1.Evacuate non-essential personnel immediately.

2.Don full protective equipment.

3.Small Spills: Cover with inert absorbent material (e.g., sand, diatomaceous earth) and collect in a sealed container.

4.Large Spills: Contain by diking or using a holding pit. Transfer using explosion-proof pumps to dedicated containers. Do not wash away with water.

5.Ventilate the contaminated area thoroughly.

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