Piperonyl Butoxide CAS 51-03-6

Piperonyl Butoxide (PBO) Technical Data Sheet

CAS No.: 51-03-6 | EC No.: 200-076-7

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1. Chemical Identification

Property	Specification
IUPAC Name	5-[[2-(2-butoxyethoxy)ethoxy]methyl]-6-propyl-1,3-benzodioxole
Molecular Formula	C₁₉H₃₀O₅
Molecular Weight	356.45 g/mol
Appearance	Clear yellow viscous liquid
Density	1.059 g/mL at 25°C
Boiling Point	180°C (1 mmHg)
Refractive Index	n<sup>20</sup><sub>D</sub> 1.498
Vapor Pressure	1.7×10⁻⁶ mmHg at 25°C

Synonyms:
PBO, α-[2-(2-Butoxyethoxy)ethoxy]-4,5-methylenedioxy-2-propyltoluene

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2. Key Applications

Grain Storage Protection

Target Pests:
✓ Rice weevils (Sitophilus oryzae)
✓ Wheat beetles
✓ Bean weevilsSynergistic Formulations:
✓ Pyrethroid combinations (1:10 ratio)
✓ Carbamate insecticide enhancer

Efficacy Data

Formulation	Mortality Rate
Pyrethroid alone	46%
Pyrethroid + PBO (30mg+400mg)	92%

Application Methods

0.05-0.2% emulsifiable concentratesDust formulations for stored grains

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3. Product Advantages

✔ Potent Synergist – 2× efficacy enhancement for pyrethroids
✔ Broad Compatibility – Works with multiple insecticide classes
✔ Storage Stability – Maintains potency for 2+ years

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4. Physical & Chemical Properties

Solubility:Water: 14.3 mg/L at 25°COrganic solvents: Miscible with mostStability:Stable under normal storage conditionsResistant to UV degradation

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5. Handling & Storage

Parameter	Requirement
Storage Temp	0-30°C (original container)
Packaging	200L polyethylene drums
Shelf Life	24 months
Special Notes	Keep away from strong oxidizers

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6. Safety Information

Warning!

H302: Harmful if swallowedH411: Toxic to aquatic life with long-lasting effects

Protective Measures:

P273: Avoid release to environmentP280: Wear protective gloves/clothingP301+P312: IF SWALLOWED: Call poison center

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7. Quality Specifications

Purity: ≥90% (GC)Moisture Content: ≤0.5%Related Substances: ≤5.0%

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Disclaimer:
This product is for professional pest control use only. Grain treatment requires proper residue management. Always follow local MRL regulations.

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