ISOPROTHIOLANE

General Chinese Name: Dao Wen Ling
General English Name: Isoprothiolane
Another Name:Fuji No.1
Chemical Name: Dllsopropyl 1,3-dithiolan-2-ylidenemalonate
M F:C12H18O4S2
M.W.:290.25
Molecular Formula:




Physical and Chemical Properties: The pure isoprothiolane is a white crystalline solid, smells a offensive, Its melt point is from 54.5to55, boiling point is between 167 and 169 at a pressure of 166.7Pa, its relative density is 1.044, and its vapour pressure at 25 is about 18.7MPa. This chemical is ready to dissolve into some organic solvents including bonzol, alcohols and acetone, its water solubility at 20 is 48mg/L, it shows good stability under sunshining and heating, and it also keeps stable in a solution with PH values from 3 to 10; however, this chemical in the water will became unstable to UV light, This power chemical is slight yellow crystalline solid, gives off a little stink smell, its melt point is from 50 to 51.

Toxicity: Emergent poisonousness through mouth LD50(mg/kg), 1190 for a male adult white mouse, 1340 for a female adult white mouse, 1350 for a male young white mouse, 1520 for a female young white mouse, 1020 for a male marmot, 2320 for a male rabbit. TLm(48h), 6.7PPm for a common carp or a crucian carp, 6.8PPm for a rainbow trout, 9.3PPm for a loach, its permissible content left in rice should be lower than 2.0PPm. This agriculture chemical of normal amount will bring no damage to birds and domestic fowl, for instance, spraying 0.5% emulsion oil (concentration is 40%) doesnt harm honeybees in 24 hours.
Quality:

Powder chemical, slight yellow crystal
Item
Date


Excellent class
First class
Qualified

Concentration of effective component, %≥
95.0
80.0
70.0

Water content, %≤
0.2
0.2
0.5

Acid degree(base on sulphuric acid), %≤
0.1
0.1
0.2

Subject unsoluble in actone, %≤
0.1
0.1
0.2


Emulsion oil, red brown transparent Liquid
Item
Date


30%
40%

Concentration of effective component, %≥
30.0+1.5-0.8
40+2.0-1.0

Water content, %≤
0.5
0.5

Acid degree(base on sulphuric acid), %≤
0.3
0.3

Stability
qualified
qualified


edicament: 30%, 40% emulsion oil
Usage: This agriculture chemical is an internal absorption bactericide. It has special good affect for rice neck blast, its effect for rice leaf blast is better than that of kitazine, and it is also suitable for curing rice shoots diseases and little coccus nueleus diseases, if this chemical is applied for a large square field, it can kill some rice delphacid and Leafhopper, at the same time it has adjusting function to plant growing. Before use it, it should be diluted by 500-800 times, normal dosage is 100-150/per acre. The effective period is 20-30days. The spray with normal dosage is not harmful to crops. the safe interval period is 14 days.
Packing And Storage:
Powder chemical Packed by Plastic bag is put into an iron vessel, each vessel weights 50kg. Emulsion oil is directly packed by iron vessel, each package weights 200kg, Keeping them from sunlight