Question 1: Both are agricultural silicone synergists — why does one come as a liquid and the other as a powder?

Answer: One sentence: the chemistry is the same class of polyether-modified trisiloxane surfactant; the physical form is dictated entirely by which formulation you're putting it into.

MY 2000 is the liquid concentrate — 99%+ active, ~21.5 mN/m surface tension, used either as a tank-mix adjuvant (0.02–0.04%, i.e. 3–6 g per 15 kg sprayer) or blended into liquid formulations (0.5–5%). MY 2001 is the powder grade — white-to-pale-yellow powder at 50% active content, engineered specifically for solid dosage forms (WP, GR, WDG, SP, EA) and powder foliar fertilizers, where adding a liquid would wreck flowability and storage stability. Selection rule: liquid formulation or tank-mix → MY 2000; powder/granule formulation → MY 2001.

Question 2: How much do they actually improve efficacy? Can one replace the other, or replace conventional surfactants?

Answer: Let's look scenario by scenario (based on measured parameters of commercially available grades):

Conclusion: They are form-dependent, not freely interchangeable — pouring MY 2000 into a wettable powder will cake the product and destroy its flowability, while dry-blending MY 2001 into a liquid EC does nothing useful. Choose by dosage form, then dose by spray volume. Productive substitution notes: ① silicone synergists typically let you cut active ingredient 10–30% at equal control, which is usually the fastest ROI for a formulator; ② but trisiloxane chemistry is pH-sensitive — keep tank-mix pH near neutral, and be aware that nonionic trisiloxane can antagonize glyphosate uptake in some species, so modified (anionic/ cationic/ amphoteric) grades exist for those systems; ③ over-dosing causes runoff and, in some crops, phytotoxicity — stay at label rates and always run a small-area field trial on the target crop and variety before scaling. Verify final rates with local field efficacy trials and registration requirements.


Phenyl Elastomer, plz check MY 3036