| |
Gibberellic
acid
Common name:
Gibberellic acid
Chemical Name:(1¦Á,2¦Â,4a¦Á,4b¦Â,10¦Â)-2,4a,7-trihydroxy-1-methyl-8-methylenegibb-
3-ene-1, 10-carboxylic acid 1,4a-lactone.
Molecular formula:
C19H22O6
Chemical family:
plant growth regulator
Appearance: White
or buff crystal powder
Solubility: Easily
dissolve in ethanol, acetone . slightly dissolve in water (5g/L)or
chloroform.
Stability: it
is high stable in acidic solution or litmusless solution. Rapidly
break down in alkali solution. Rapidly decomposed by heat.
Melting point:
223-225 .
Shelf life: 3
years under the cool, shade and dry storage conditions.
Toxicity: Small
rat can resist LD50 15000mg/kg.
Specification:
90% tech grade, 95% tech grade, 20% tech grade. GA4+7-90%, 95%
tech grade.
Use:Break dormancy;promote
bourgeon;improve quality and increase fruit production.Applicable
to fruits and vegetables.
Cautions:
1. Due to low solubility of the pure gibberellic acid in water,
dissolve it in small amount of ethyl alcohol at first, add water
to reach the concentration required.
2. Must avoid being used with alkaline substance; may be used
with neutral or mild acidic.
3. The product must be stored in low temperature and dry conditions.
Should be used immediately after adding water.
|
|
