Detailed Product Description
Paraquat 20%%SL Weed Control Herbicides
Description:
Paraquat is a non-selective contact herbicide, quaternary nitrogen herbicide.
Paraquat is widely used for road-spectrum control of broad-leaved weeds and grasses. It is a
quick-acting, very effective, nonselective compound, that destroys green plant tissue on contact
and by translocation within the plant. It has been employed for killing marijuana in the U.S. and in
Mexico. It is also used as a crop desiccant and defoliant, and as an aquatic herbicide.
Quick Detail:
Product name: Paraquat 27.6%SL
Pesticide category: Herbicide
CAS NO.: 4685-14-7
MF: C12H14Cl2N2
Purity: 27.6%SL
Appearance (TC): Blue-green homogeneous liquid
Appearance (27.6%SL): Blue-green homogeneous liquid
Brand name: Greenriver/ as per customers request.
Applications:
Broad-spectrum control of broad-leaved weeds and grasses in fruit orchards (including citrus),
plantation crops (bananas, coffee, cocoa palms, coconut palms, oil palms, rubber, etc.), vines,
olives, tea, alfalfa, onions, leeks, sugar beet, asparagus, ornamental trees and shrubs, in forestry,
etc. Also used for general weed control on non-crop land; as a defoliant for cotton and hops; for
destruction of potato haulms; as a desiccant for pineapples, sugar cane, soya beans, and sunflowers;
for strawberry runner control; in pasture renovation; and for control of aquatic weeds. For control of
annual weeds, applied at 0.4-1.0 kg/ha.
Specifications:
| Active ingredient |
| Common name: |
paraquat |
| Chemical name: |
1,1'-dimethyl-4,4'-bipyridinium |
| Pesticide category: |
Herbicide |
| CAS No: |
4685-14-7 |
| Molecular Formula: |
C12H14N2 |
|
Structural Formula:
|
|
| Properties |
Form Colourless, hygroscopic crystals.
M.p. Decomposes at c. 340°C
V.p. <1 ?10-2 mPa (25 °C)
KOW logP = -4.5 (20°C)
Henry <4 ?10-9 Pa m3 mol-1 (calc.)
S.g./density 1.24-1.26 (20 °C)
Solubility In water c. 620 g/l (20°C). Practically insoluble in most organic solvents.
Stability Stable in neutral and acidic media, but readily hydrolysed in alkaline media. Photochemically decomposed by u.v. irradiation in aqueous solution.
|
| Mode of Action: |
Non-selective contact herbicide, absorbed by the foliage, with some translocation in the xylem. |
|
Toxicity:
|
Oral Acute oral LD50 for rats 157-129, guinea pigs 30-58 mg/kg.
Skin and eye Acute percutaneous LD50 for rats 911 mg paraquat ion/kg. Irritating to skin and eyes (rabbits). Absorption through intact human skin is minimal; exposures can cause irritation and a delay in the healing of cuts and wounds; can cause temporary damage to nails. Not a skin sensitiser (guinea pigs).
Inhalation No vapour toxicity. Extreme exposure to spray droplets may cause nose bleeding. NOEL (1 y) for dogs 0.65 mg/kg b.w. daily; (2 y) for rats 1.7 mg/kg b.w. daily.
|
| Formulation Specification |
| Product name: Paraquat 27.6%SL (Paraquat 200g/L SL) |
| Items |
Standard |
| Appearance |
Blue-green homogeneous liquid |
| Content of a.i. |
≥27.6% |
|
Specific gravity
|
1.07-1.09 |
| Emetic(pp796) |
≤0.04% |
| Solution stability |
Qualified |
|
