Gold Member Since 2017
Audited Supplier
Anhui Sinograce Chemical Co., Ltd.

Anionic Surfactants, Cationic Surfactants, Non Ionic Wetting Agent manufacturer / supplier in China, offering Modified Heptamethyltrisiloxane Spray Adjuvant (WET-618), Silicone Resin Nonstick Coating (S-201), (CAS No. 52623-00-4) Perfluorocyloether (PF-200) and so on.

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Supplier Homepage Product Chemical Additives Wetting Agent Modified Heptamethyltrisiloxane Spray Adjuvant (WET-618)

Modified Heptamethyltrisiloxane Spray Adjuvant (WET-618)

FOB Price: Get Latest Price
Min. Order: 1 kg
Port: Shanghai, China
Production Capacity: 10tons/Month
Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram, D/A

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Basic Info
  • Model NO.: WET-618
  • Usage: Coating Auxiliary Agents, Textile Auxiliary Agents, Surfactants, Leather Auxiliary Agents, Agrochemicals
  • Active Content: 100%
  • Viscosity: 20-50
  • CAS No.: 27306-78-1
  • Trademark: SINOGRACE
  • Origin: China Anhui
  • Appearance: Liquid
  • Color: Colorless or Yellowish Liquid
  • Density (g/cm3): 1.01
  • Cloud Point: <10
  • Surface Tension: <20.5
  • Transport Package: Available in 25 Kg/Barrel or 200kg/Barrel
  • HS Code: 3402900090
Product Description


Modified Heptamethyltrisiloxane Spray Adjuvant WET-618 is a high superspreading surfactant modified by trisiloxane ethoxylate with super low surface tension. It lowers the surface tension of spray solutions, beyond that which is achievable with conventional adjuvants.



Polyalkyleneoxide modified heptamethyltrisiloxane


Key features

Comparable with Silwet L77



Improves spray coverage

Promotes spray volume reduction

Promotes rapid uptake of agrochemicals (rainfastness)


Typical properties

Appearance:                                  Colorless clear liquid

Active content (%):                        100%

Density (g/cm3):                            1.01

Viscosity (cp, 25 ºC):                      20-50

Cloud Point (0.1 wt%), (ºC):            <10

CAS No. :                                      27306-78-1

Surface tension (0.1%, dyn/cm):     <20.5



-Plant Growth Regulators           0.025% to 0.05%

-Herbicide                                  0.025% to 0.15%

-Insecticide                                 0.025% to 0.1%

-Fungicide                                  0.015% to 0.05%

-Fertilizers and Micronutrients     0.015% to 0.1%

Note: use rates are dependent on crop, agrochemical and spray volume requirements.


Storage and handling

Available in 25 kg/barrel or 200kg/barrel

Store products in tightly closed original containers at 5-40ºC

Shelf life: 12 months from delivery date

According to non-dangerous goods transport




-WET-618 may be used as a component in agrochemical formulations. Although organosilicone surfactants are subject to hydrolysis under acidic or basic conditions, optimum performance is achieved by buffering the formulation to pH 6.5-7.5. Additionally, it is recommended that WET-618 spray adjuvant be used at a concentration of at least 5%, based on the total formulation.


-WET-618 spray adjuvant, when used as a tank-side adjuvant may be used to improve spray coverage, improve uptake or to allow for a reduction in spray volume. WET-618 spray adjuvant is most effective as a tank-side adjuvant when spray mixtures are 1) within a pH range of 5-8, and 2) used within 24 hours of preparation.

-High spray volumes, coupled with high surfactant rates, are not required to achieve sufficient coverage with WET-618 spray adjuvant. In fact, it has the potential to provide adequate coverage in many low volume spray applications at rates between 0.025% and 0.1%.

Modified Heptamethyltrisiloxane Spray Adjuvant (WET-618)
Modified Heptamethyltrisiloxane Spray Adjuvant (WET-618)
Modified Heptamethyltrisiloxane Spray Adjuvant (WET-618)
Modified Heptamethyltrisiloxane Spray Adjuvant (WET-618)


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