Product Specification: Methaldehyde (Metaldehyde) 99% TC

Product Name: Methaldehyde (Metaldehyde) 99% TC
Chemical Name: 2,4,6,8-Tetramethyl-1,3,5,7-tetraoxocane
CAS Number: 108-62-3
Molecular Formula: C₈H₁₆O₄
Molecular Weight: 176.20 g/mol
Formulation Type: Technical Concentrate (TC)
Active Ingredient Content: ≥99.0% (by GC or HPLC)

Description:

Methaldehyde (commonly known as Metaldehyde) 99% TC is a cyclic tetramer of acetaldehyde widely used as a molluscicide for controlling slugs and snails in agricultural and horticultural crops. It is a white crystalline solid known for its efficacy in protecting crops such as cereals, vegetables, fruits, and ornamentals from gastropod damage.

The technical concentrate grade provides a highly pure raw material used to formulate pellets, granules, and other slow-release molluscicide products.

Physical and Chemical Properties:

• Appearance: White crystalline solid or powder

• Odor: Characteristic strong, acetaldehyde-like odor

• Melting Point: Approximately 106–108°C

• Boiling Point: Decomposes before boiling

• Solubility:

  • Slightly soluble in water (~0.16 g/L at 20°C)

  • Soluble in organic solvents such as ethanol, acetone, and ether

• Density: Approximately 1.18 g/cm³

• Stability: Stable under dry, cool storage conditions; sensitive to heat and moisture which may cause decomposition

Specification Parameters:

Mode of Action:

Methaldehyde acts as a stomach poison against slugs and snails. When ingested, it causes excessive mucus secretion leading to dehydration and death. It also emits a strong odor that repels gastropods, reducing feeding damage. Methaldehyde is primarily used in pellet or bait form, providing targeted control with minimal environmental impact.

Applications:

• Agriculture:

  • Protection of cereals, vegetables, fruits, and ornamentals against slug and snail damage

  • Used in pellet or granule formulations for field and greenhouse applications

• Horticulture:

  • Control of gastropods in nurseries, gardens, and turf management

• Formulated Products:

  • Pellets

  • Granules

  • Baits

Toxicological Profile:

• Oral LD₅₀ (rat): Approximately 100–500 mg/kg (moderate toxicity)

• Skin Irritation: Mild irritant

• Eye Irritation: Mild irritant

• Sensitization: Not a known sensitizer

• Environmental Impact: Toxic to aquatic organisms; moderate persistence in soil; low bioaccumulation potential; avoid contamination of water bodies

Packaging and Storage:

• Packaging: Typically packed in moisture-proof polyethylene bags, foil bags, or fiber drums with inner liners. Common pack sizes range from 10 kg to 25 kg.

• Storage Conditions: Store in a cool, dry, well-ventilated place away from heat, direct sunlight, and moisture to prevent degradation. Keep containers tightly closed.

• Shelf Life: Minimum 24 months when stored under recommended conditions

Safety and Handling:

• Use appropriate personal protective equipment (PPE) during handling

• Avoid inhalation, ingestion, and contact with skin or eyes

• Follow local regulations for disposal and environmental protection

Conclusion:

Methaldehyde 99% TC is a highly effective molluscicide technical concentrate used extensively in agriculture and horticulture for controlling slugs and snails. Its high purity and physical stability make it an excellent raw material for formulation into baits and pellets. Proper storage and handling ensure product efficacy and safety.