Dimethacarb 50% EC – High-Potency Carbamate Insecticide for Agricultural & Horticultural Pest Control

Dimethacarb 50% EC is a high-performance carbamate insecticide formulated as an emulsifiable concentrate, designed for rapid and effective control of a broad spectrum of agricultural and horticultural pests. With its 50% active ingredient (AI) concentration, this product delivers fast knockdown and reliable residual activity, making it a preferred choice for farmers dealing with resistant pest populations.

Technical Specifications

Parameter	Specification
Active Ingredient	Dimethacarb 50% w/w
Chemical Class	Carbamate (Methylcarbamate)
IRAC MoA Group	1A (Acetylcholinesterase inhibitor)
Formulation Type	Emulsifiable Concentrate (EC)
Physical Appearance	Light yellow to amber viscous liquid
Odor	Characteristic aromatic odor
Specific Gravity	1.05-1.15 g/cm³ (20°C)
Flash Point	>80°C (Pensky-Martens closed cup)
pH (1% solution)	6.0-7.5
Shelf Life	24 months in original packaging

Mode of Action

Dimethacarb exerts dual action as:

Contact poison: Penetrates insect cuticle on direct contact
Stomach poison: Effective when ingested by feeding pests
Limited systemic activity: Shows partial translaminar movement

The compound irreversibly inhibits acetylcholinesterase, causing:

Nerve impulse disruption
Paralysis within 1-2 hours
Death within 4-24 hours

Target Pests & Crops

Primary Controlled Pests

Cereals:

Wheat aphid (Schizaphis graminum)
Rice planthoppers (Nilaparvata lugens)

Vegetables:

Diamondback moth (Plutella xylostella)
Colorado potato beetle (Leptinotarsa decemlineata)

Fruits:

Citrus red mite (Panonychus citri)
Codling moth (Cydia pomonella)

Cotton:

Boll weevil (Anthonomus grandis)
Cotton aphid (Aphis gossypii)

Application Guidelines

Crop	Target Pest	Dosage	Water Volume	Max Apps/Season	PHI (Days)
Wheat	Aphids	300-400 mL/ha	300-400 L/ha	2	21
Cabbage	Diamondback moth	400-500 mL/ha	500-750 L/ha	3	14
Citrus	Red mite	1000-1500x	To runoff	2	28
Cotton	Boll weevil	500-600 mL/ha	500-600 L/ha	3	15

Optimal Application Conditions:

Temperature: 15-25°C
RH: 40-70%
Wind speed: <10 km/h
Avoid application before rain (<6 hours)

Efficacy Data

Control Efficiency (%)

Pest Species	24 HAT	72 HAT	7 DAT
Wheat aphid	92.5	98.2	89.7
Diamondback moth larvae	85.3	96.8	82.4
Citrus red mite	88.6	95.1	76.3

HAT = Hours After Treatment | DAT = Days After Treatment

Safety Profile

Toxicity Classification

WHO Class: Ib (Highly hazardous)
Acute Oral LD50 (rat): 25-50 mg/kg
Dermal LD50 (rabbit): 500 mg/kg
Inhalation LC50 (rat): 0.5 mg/L (4h)

Protective Measures

Mandatory PPE:
- Chemical-resistant apron
- Respirator with organic vapor cartridge
- Nitrile gloves (≥0.11mm)
- Face shield + goggles
Re-entry Interval: 48 hours
Buffer Zones:
- 100m from aquatic systems
- 50m from human dwellings

Environmental Fate

Parameter	Value
Soil DT50	7-14 days
Water solubility	580 mg/L (20°C)
Koc	200-300
GUS Leaching Potential	2.1 (Medium)

Resistance Management

Rotation Partners:
- Neonicotinoids (Group 4A)
- Spinosyns (Group 5)
- Diamides (Group 28)
Anti-Resistance Strategy:
- Maximum 2 consecutive applications
- Tank-mix with synergists (e.g., PBO)
- Threshold-based spraying

Compatibility

Can be mixed with:

Most fungicides (except copper-based)
Adjuvants (non-ionic surfactants)
Urea fertilizers

Incompatible with:

Alkaline pesticides (pH >8.0)
Sulfur compounds
Boron fertilizers

Storage & Handling

Temperature Range: 5-35°C
Container: HDPE drums with inner liner
Disposal: Triple-rinse empty containers
First Aid:
- Eyes: Flush with water for 15 minutes
- Skin: Wash with soap + water
- Ingestion: Administer activated charcoal

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