Product Specification: Fenobucarb 98% TC

Chemical Name: 2-sec-Butylphenyl methylcarbamate
Common Name: Fenobucarb
Other Names: BPMC
CAS Number: 3766-81-2
Molecular Formula: C₁₂H₁₇NO₂
Molecular Weight: 207.27 g/mol
Formulation Type: Technical Concentrate (TC)
Purity: ≥98% (by Gas Chromatography)

Description:

Fenobucarb 98% TC is a high-purity carbamate insecticide used primarily in agriculture for controlling a wide variety of insect pests, especially planthoppers and leafhoppers. It acts as a contact and stomach poison with quick knockdown properties and is particularly effective on the brown planthopper (Nilaparvata lugens) in rice cultivation.

Fenobucarb belongs to the carbamate class and works by reversibly inhibiting the enzyme acetylcholinesterase (AChE), which disrupts nerve signal transmission in insects, leading to paralysis and death. The technical concentrate (TC) is used to formulate various agricultural products such as emulsifiable concentrates (EC), wettable powders (WP), and granules (GR).

Physical and Chemical Properties:

• Appearance: Pale yellow to brownish oily liquid or crystalline solid (depending on temperature)

• Odor: Slight phenolic odor

• Melting Point: 33–36°C

• Boiling Point: 162°C (at 0.1 mmHg)

• Density (20°C): 1.06–1.10 g/cm³

• Vapor Pressure: Low (approx. 3.7 × 10⁻⁴ mmHg at 25°C)

• Solubility: Slightly soluble in water (~28 mg/L at 20°C); freely soluble in organic solvents such as acetone, methanol, and xylene

• Stability: Stable under recommended storage conditions; sensitive to strong acids and bases

Specification Parameters:

• Fenobucarb Content: ≥98.0%

• Water Content: ≤0.5%

• Acidity (as H₂SO₄): ≤0.2%

• Insoluble in Acetone: ≤0.5%

• Appearance: Uniform oily liquid or crystalline solid, free from visible impurities

Applications:

Fenobucarb 98% TC is widely used in agriculture for the control of:

• Brown planthopper (Nilaparvata lugens)

• White-backed planthopper (Sogatella furcifera)

• Green leafhopper (Nephotettix spp.)

• Aphids, thrips, and other sucking pests

Major Crops:

• Rice (primary use)

• Vegetables

• Fruits

• Cotton

• Tea

Its rapid knockdown and short residual effect make it suitable for integrated pest management (IPM) programs, often used in rotation with other insecticides to delay resistance development.

Mode of Action:

Fenobucarb acts by inhibiting the enzyme acetylcholinesterase (AChE) in the insect's nervous system. This inhibition causes an accumulation of acetylcholine at nerve synapses, leading to continuous nerve stimulation, loss of coordination, paralysis, and eventual death. Unlike organophosphates, carbamate inhibition is reversible, and Fenobucarb has a relatively fast action and short persistence.

Toxicological Profile:

• Oral LD₅₀ (rat): 300–500 mg/kg (moderate toxicity)

• Dermal LD₅₀ (rat): >2000 mg/kg

• Inhalation LC₅₀ (rat, 4h): >2.0 mg/L

• Skin/Eye Irritation: Slight irritant

• Sensitization: Non-sensitizing

• Ecotoxicology: Toxic to fish and aquatic invertebrates; relatively safe to bees when applied responsibly

Packaging and Storage:

• Packaging: 25 kg fiber drum, 200 kg steel drum, or as per customer requirement

• Storage: Store in a cool, dry, and well-ventilated area away from direct sunlight and incompatible substances

• Shelf Life: At least 2 years in unopened original packaging under standard storage conditions

Safety and Handling:

Use appropriate personal protective equipment (PPE) during handling. Avoid inhalation of vapors or dust and direct contact with skin or eyes. Follow local regulations for safe use, formulation, and disposal. Refer to the Material Safety Data Sheet (MSDS) for complete safety guidelines.

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