Molecular Formula: C₁₁H₁₉N₃O
Molecular Weight: 209.3
Structural Formula:

Chemical Name: 5-butyl-2-ethylamino-6-methylpyrimidin-4-ol
CAS RN: 23947-60-6
Physical and Chemical Properties: Appearance: white crystal, melting point is between 159^oC and 160^oC, it will happen to phase change at 140^oC. The vapor pressure is 0.267mPa at 25^oC. Its solubility is 0.02g/100mg under room temperature, it almost can not solve in acetone, slightly solve in diacetone alcohol and alcohol. It can solve in chloroform, methyl chloroform, strong acid and alkali. It is stable to heat, alkali and acid. It can not corrode metal, but its acid solution can not store in steel container which is galvanized inside.
Toxicity: The acute oral toxicity for rat is LD₅₀ 6340mg/Kg, for rabbit is 1000-2000mg/Kg, for cat is > 1000mg/Kg, for cavy is 500-1000mg/Kg, for hen is 4000mg/Kg. it can cause slightly irritant to rabbit eyes if drop it in rabbit eyes with 50mg/ml each day. It has no effect on rat and dog for feeding two year with 200ppm and 300ppm. It is safe to bees. It has no effect on animals around the applying area..
Content: 95%min. Package: 25KG fiber Drum
Formulation: 25% EC Package: 200L Drum
Application: It is a kind of pyrimidines systemic fungicide. It is mainly used to control powdery mildew on cereal crops, such as barley, wheat and oat. It can be also use to control powdery mildew on cucurbit plants. It can be absorbed through root to protect the whole plants when it is used during seed dressing treatment. It is also used to spray stem leaf and will be absorbed through stem leaf to prevent disease spreading to new leaves. The dosage for seed treatment is 4g/1000g, for spraying stem leaf is 250-350g/ha.