SPECIFICATION OF GIBBERELLIC ACID 90 % (GA3) TECH
1. ACTIVE INGREDIENT | ||
a) Chemical name | : | ( 3S,3aS,4S,4aS,7S,9aR,9bR,12S )-7,12-dihydroxy-3-methyl-6-methylene -2-oxoperhydro-4a,7-methano-9b,3-propeno[1,2-b]furan-4-carboxylic acid |
b) Common name of a. i. | : | GIBBERELLIC ACID ( BSI, draft E-ISO ) |
c) Empirical formula | : | C19H22O6 |
d) Structural formula | : | |
e) Molecular weight | : | 346.4 |
f ) CAS number | : | [ 77-06-5 ] |
2. PHYSICAL AND CHEMICAL PROPERTIES OF TECHNICAL | ||
a) Colour | : | White |
b) Odour | : | Odorless |
c) Physical state | : | White powder |
d) Solubility in water | : | In water 5 g/lt ( room temperature ). |
In organic solvents | Soluble in methanol, ethanol, acetone and aqueous alkalis; slightly soluble in diethyl ether and ethyl acetate. Insoluble in chloroform. Potassium, sodium and ammonium salts; Readly soluble in water(potassium salt 50 g/lt ) | |
e) Intensity or specific gravity | : | 1.13 g / cm3 |
f) Vapour pressure | : | : <1.0x10-6 pa at 25 ºC ) |
g) Stability (oxidation and thermal) solutions, | : | Dry gibberellic acid is stable at room temperature, but slowly undergoes hydrolysis in aqueous or aqueous-alcoholic DT50 ( 20 ºC ) c. 14 d ( pH 3-4 ), 14 d (pH 7 ). In alkalis, undergoes a rearrangement to less biologically-active compounds. Decomposed by heat. |
h) pH range at which it is stable | : | 4.0-9.0 |
i ) Data on storage stability | : | In its original containers, the product keeps physical , chemical and biological properties at least 2 years if stored in a dry and frostless place. |
3. PURITY (%) | : | 90 % |
COA OF GA3 TECH | ||
ITEM | SPECIFICATION | RESULT |
Appearance | White Powder | White Powder |
A.I. | 90 % | 90.1% |
Water | ≤ 0.5 % | 0.07% |
Material insoluble in acetone | ≤ 0.7 % | 0.1% |
Mineral acidity | ≤ 0.8 % | 0.15% |
Unknown matter | ≤ 1.0 % | 0.2% |