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PASS is a nonionic silicone polyether surfactant, used as a super spreader, wetter, sticker in tank-mix with agrochemicals, also as a formulation additive in pesticide products. Its good wetting & spreading properties improve the wetting, spreading and penetration of pesticides. Tank mix dosages: 5 ml PASS per 15 liters water solution. Better PH=5-8.
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Super Spreader
Agricultural Silicone Surfactant
Shanghai Profirst Co., Ltd.
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Main contents
The work way of pesticides on surface of plants
Super Spreader “PASS“
Agricultural silicone surfactant
How to use “PASS” ?
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“PASS” Showcase
Other PASS series
When spraying pesticides
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Spraying
Coverage & Rain fastness
Penetrate & Translocation
Wetting & Spreading
Retention
More Retention
More Coverage &
Ensure final efficacy
If use pesticides directly on targets
Can not be absorbed immediately.
It’ll take hours to be permeate into the organizations of the plant.
Less than 0.03% finaly acts on the targets.
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Easily lost to the field and
washed away by rain, which
cause amounts of run-off.
Any solutions?
Spraying more?
Cause a waste of pesticides
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Using better sprayer?
Better than the former
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Adding additives?
The best,
and most effective way
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Possibility of adding surfactants
Skin absorption Stomatal absorption
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Critical surface tension
25mN/m
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Possibility of adding surfactants
“Skin absorption” (left) can be changed into
“Stomatal absorption” (right) only if the surface
tension less than 25mN/m.
Surfactant, which can decrease the surface
tension of solvents, can be used as the additives.
Chosen surfactants are as follow:
New-style:
Silicone surfactant
Typical: Op-10 & JFC (Polyethoxylated fatty alcohols)
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29.8 0.10%
31 0.05% 1% Abamectin EC+JFC
34 0.10%
32.4 0.05% 1% Abamectin EC +
OP-10
35.8 2000 times 1% Abamectin EC
72.4 \ Water
Surface tension
（mN/m）
Diluted times or
concentration Solution
under 25 mN/m
Experiment data of different surfactants
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22.2 0.10%
22.6 0.05% 1% Abamectin EC + X
Agricultural silicone surfactant
30. 7 23.5 36.1 22.7 19.3 21.9 0.10%
32.7 33 36.6 30.4 35 25.2 0.05% 1% Abamectin
EC+JFC
31.5 35.9 37.2 34.2 35.6 32.2 0.10%
33.2 39.7 38 35.1 40 35.2 0.05% 1% Abamectin EC +
OP-10
34.1 46.5 39.9 37.8 90.6 38.9 2000 times 1% Abamectin EC
36.5 130.2 41.8 49.3 93.6 39.6 \ Water
Celery Shallot Spinach Tomato Kale Cole
Contact angle（o） Diluted times or
concentration Solution
Agricultural silicone surfactant
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0 0 0 0 0 0 0.10%
0 0 0 0 0 0 0.05% 1% Abamectin EC
+ X
Different results on leaves
A
B
A
B
A: with traditional surfactants
B: with silicone surfactant rain wash
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Different results on leaves
With organic silicone With JFC or OP-10
10mins after spraying…
More than 80% absorbed
Only 25-50% stayed
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Merits of using silicone surfactant
Lower surface tension (<25mN/m)
0 °contact angle
Faster penetrating ability
Higher efficacy
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Silicone surfactant,
A better choice !
Conclusion
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Agricultural silicone surfactant
Si–O–Si–O–Si
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Main Structure:
Trisiloxane
Agricultural silicon surfactant
Surfactants based on Trisiloxane:
Working as Super Spreader
Main force of the future agricultural additive market.
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Super Spreader “PASS”
PASS：
Trade name Active content Package
PASS 100% 100g/bottle, 1kg/bottle
20kg/pail, 200kg/drum
1MT/IBC
Chemical name: Polyether modified trisiloxane
The super wetting and spreading ability can be comparable to
famous brands from Dow Corning, GE & Evonik…
Add in tank mix（more popular）
Easy & fast way to use
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Add in the formulation of Agrochemicals
Better PH range between 6-8
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15L
water
15L
water
15L
water
15L
water
PASS
Pesticides
= + + 15L
water
+
Only 5 g PASS in 15-20L water solution can get great results
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1/3 pesticides saved
1/3 water saved
1/3 labour saved
3*15 L water
2*15 L water
Three sprayers
Two sprayers
3* 2*
When using “PASS” … Money
saved
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5g / PE bag
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100g/bottle
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20kg/pail
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200kg/drum & 1000kg/IBC
Conclusion
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Super spreading
More Coverage
Quicker Uptake
Rainfastness
Lower wash-off
Less water
Less agrochemicals
Less labor
Less cost & save money
Increase action
concentration
Improve efficacy
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PASS Showcase
Drop of water
Drop of water with silicone surfactant on leave
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PASS Showcase
Drop of water touched slightly by toothpick with very small dosage of PASS
Drop of water Drop of water
Drop with PASS spreading quickly Drop with PASS finally cover whole area of leave
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water
Water+OP-10
Water+PASS (PASS-silicone surfactant from Shanghai Profirst)
Took on the fair of Agrochemex2012
Comparing result of silicone
surfactant (PASS) with OP-
10 (a traditional surfactant)
on leave
PASS Showcase
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PASS Showcase
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PASS Showcase
Even works well in cold weather
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Other PASS Series
PASS-HB
( Tank mix adjuvant for Glyphosate, 50 % )
PASS-Powder
( For powder formulations of agrochemicals, 50% )
PASS-LF
( Super Spreader with low foam for Agrochemicals, 100% )
PASS-PH
( Super Spreader for Agrochemicals, PH range 4-9, 100% )
Shanghai Profirst Co., Ltd.
Tel: 86-21-38122007
Fax: 86-21-38122006
E-mail: [email protected]
Website: http://www.profirst.cn
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Contact person: Lily Li Skype: profirst-lily
