Forchlorfenuron (CPPU), 99% TC, 1% SP

Identification

Synonyms: 1-(2-chloro-4-pyridyl)-3-phenylurea (IUPAC); N-(2-chloro-4-pyridinyl)-N'-phenylurea; CPPU; 'Sitofex' (Alzchem). Other products 'Caplit' (Kyowa); 'Fulmet' (Kyowa); 'Prestige' (Valent).
CAS No.: 68157-60-8
Molecular Weight: 247.68
Molecular Formula: C12H10ClN3O
Molecular Structure:
m.p.: 121-126°C
Form: White to off-white crystalline powder.
M.p.: 165–170 °C
V.p.: 4.6 × 10-5 mPa (25 °C, gas saturation)
Kow: logP = 3.2 (20 °C)
Henry: 2.9 × 10-7 Pa m3 mol-1
S.g./density: 1.3839 (25 °C)
Solubility: In water 39 mg/l (pH 6.4, 21 °C). In methanol 119, ethanol 149, acetone 127, chloroform 2.7 (all in g/l).
Stability Stable to heat and light. Not hydrolysed over 30 d at pH 5, 7 and 9 (25 °C).
pKa: pKa1 2.5, pKa2 12.25 (EU Rev. Rep.)

Application

Absorbed by leaves, stem, cotyledon and germinated seeds, forchlorfenuron (CPPU) promotes cell division, differentiation and development; induces budding of callus, and controls apical dominance; breaks dormancy of lateral buds and promotes germination; delays ageing process and maintains chlorophyll in excised leaves; regulates the transport of nutrients; promotes fruit formation, etc. Used to increase the size of kiwifruit, table grapes and peaches; promote fruit set in melons, pumpkins and cucumbers; promote branching in apples; and increase yield in potatoes, rice and wheat. Applied at 1–1000 ppm, depending on crop. Phytotoxicity Herbicidal activity at higher concentrations.

Specification*

Standard Packaging

Risks and Safety Information