• Meperfluthrin

• Dimefluthrin

• Heptafluthrin

• Transfluthrin

These chemicals are synthetic pyrethroid-based insecticides widely used in household mosquito repellents due to their fast action, low dosage requirement, and high efficacy when burned as smoke.

🧪 Detailed Description: Mosquito-Killing Chemicals in 12-Inch Mosquito Agarbatti

🔹 General Purpose of These Chemicals

These are vapor-active pyrethroid compounds added to mosquito incense sticks for:

• Killing or repelling mosquitoes through inhalation of smoke.

• Fast knockdown effect (mosquitoes are paralyzed or die quickly).

• Effective in open and semi-open spaces.

• Work at low concentrations and are cost-effective.

🧬 1. Meperfluthrin

• Chemical Class: Pyrethroid

• Appearance: Pale yellow liquid (technical grade)

• Usage: Added in microdoses to incense sticks or coils

• Mode of Action: Attacks mosquito nervous system via inhalation

• Benefits:

  • High vapor pressure — quick dispersion

  • Fast knockdown effect

  • Effective even at very low dosage (0.05%–0.2% w/w)

• Limitations: Can cause mild respiratory irritation if overused

🧬 2. Dimefluthrin

• Chemical Class: Highly efficient pyrethroid

• Usage: Strong active ingredient in mosquito coils, mats, and sticks

• Mode of Action: Neurotoxic to mosquitoes, disrupts sodium channels

• Benefits:

  • Higher potency than Meperfluthrin

  • Used in low concentrations (as low as 0.05%)

  • Effective both indoors and outdoors

• Caution:

  • Requires careful handling and correct dosage to avoid human irritation

🧬 3. Heptafluthrin

• Chemical Class: Advanced synthetic pyrethroid

• Form: Liquid, soluble in organic solvents

• Mode of Action: Quick-acting knockdown and repellency

• Benefits:

  • Suitable for agarbatti due to good combustion properties

  • High vapor activity — works well even in partially ventilated areas

  • Used in concentrations of 0.05%–0.1%

• Application:

  • Often used in combination with other actives for synergistic effect

🧬 4. Transfluthrin

• Chemical Class: Fast-acting pyrethroid

• Features:

  • High volatility – can work without burning (in vaporizers too)

  • Excellent for fast action mosquito sticks

• Usage in Agarbatti:

  • Used in small amounts (0.02%–0.1%)

  • Often used in premium mosquito sticks

• Advantages:

  • Acts within minutes

  • Effective in both large and small spaces

• Precautions:

  • Should be used under controlled limits as excessive inhalation may cause irritation

📦 Typical Dosage in 12-Inch Mosquito Agarbatti

These are usually diluted in a solvent (like DEP – diethyl phthalate) and mixed into the paste or coating used in incense stick production.

🧪 Formulation & Mixing

• Active chemical is dissolved in a suitable solvent (e.g., DEP).

• Then sprayed or mixed into the incense paste or applied as a top coat.

• Uniform mixing is essential for consistent burning and efficacy.

• Ensure PPE (gloves, mask) is used during handling.

⚠️ Safety & Regulatory Compliance

• These chemicals must be used as per government safety guidelines (e.g., BIS or CPCB norms in India).

• Proper labeling on packaging is mandatory (active ingredient %, cautionary notes).

• Overuse can be harmful to humans, especially in closed rooms.

✅ Summary

The above chemicals are essential for the formulation of effective mosquito-repellent agarbattis. They are:

• Highly potent even at low doses.

• Provide quick action.

• Must be used carefully and within safety limits.

• Widely adopted in 12-inch mosquito sticks for household protection against mosquitoes.

Let me know if you need:

• A formulation chart

• A SOP for mixing

• Or safety data sheets (SDS) for any of these actives.

🧱 Mosquito Chemical Stone from China – Detailed Description

🔹 What is Mosquito Chemical Stone?

Mosquito Chemical Stone (also called insecticide stone or repellent stone) is a solid, concentrated source of pyrethroid-based mosquito-repellent chemicals. It is primarily used in agarbatti and coil manufacturing to infuse insecticidal properties in the final product.

These stones are a compressed matrix of chemical actives (like Meperfluthrin, Transfluthrin, or Dimefluthrin) along with inert binders. They are typically gray or yellowish-white, with a slight chemical odor.

📦 Key Features

• Solid form – easy to transport and store

• Concentrated – contains high levels of mosquito-repelling active ingredients

• Slow-release – disperses chemical gradually into the product mix

• Easy to dissolve – can be ground into powder or dissolved in solvents

• Long shelf life – stable when kept dry and sealed

🧪 Typical Composition

⚙️ How It’s Used in Agarbatti Manufacturing

1. Crushing/Grinding:
   The stone is manually or mechanically crushed into fine powder.

2. Dissolving:
   The powdered stone is dissolved in a carrier solvent like DEP (Diethyl Phthalate) or white kerosene to create a liquid concentrate.

3. Mixing:
   This liquid is then mixed into the incense paste or applied as a surface coat on finished sticks.

4. Drying:
   Treated sticks are dried in a well-ventilated area to ensure uniform distribution and stability of the chemical.

📏 Typical Dosage

• 1 stone (~100g) can treat approximately 8–10 kg of incense paste (varies by active concentration).

• Recommended dosage is around 0.05% to 0.2% active ingredient in the final product.

⚠️ Safety Precautions

• Always wear gloves and mask when handling.

• Avoid direct skin contact or inhalation.

• Store in cool, dry, and ventilated space away from food or open flames.

• Keep out of reach of children and pets.

✅ Advantages

• Cost-effective alternative to liquid technical-grade actives

• Easier to handle and dose for small manufacturers

• Reduces handling of raw insecticides

• Long shelf life and transport-friendly

❌ Limitations

• Requires grinding and preparation

• Potency may vary slightly by batch or supplier

• Needs proper solvent mixing for effective results

🌍 Imported From

• China is the leading exporter,

Common brands or generic types may be labeled as:

• “Mosquito Repellent Stone”

• “Fluthrin Chemical Block”

• “Mosquito Killer Stone”

📌 Summary

Mosquito Chemical Stone from China is a solid, easy-to-use formulation of mosquito-killing agents (like Meperfluthrin or Transfluthrin), ideal for use in agarbatti and coil manufacturing. It provides a convenient and economical way to integrate repellency into incense sticks, especially for outdoor use and rural markets.