Humic acid
CAS NO. 1415-93-6
EINECS:215-809-6
Formula: C9H8K2O4
Property
Black brown powder or granular, innoxious, odorless, insoluble in water, easily soluble in alkali
Specification
ITEM |
STANDARD |
||
I |
II |
III |
|
Humic acid (dry basis) |
50.0% min |
60.0% min |
70.0% min |
Organic matter (dry basis) |
60.0% min |
70.0% min |
80.0% min |
C.E.C (dry basis) |
1.8mmol/g min |
2.5mmol/g min |
3.0mmol/g min |
PH Value |
4.0-6.0 |
4.0-6.0 |
4.0-6.0 |
Appearance |
Powder/Pearl/Ball |
Powder |
|
Size |
2-4 or 1-3 mm (pearl/ball), 60-80 mesh (powder) |
60-80 mesh |
Packing
25kg plastic woven bag with PE liner./10kg plastic woven bag with PE liner
Or 25kg kraft paper bag with PE liner.
Application
1.5-10kgs/ha/time, 2-3 times during seedling and growth stage, better to be applied with N, P,K fertilizers
2.Mixed with Nitrogen fertilizers: 5% of total blend, e.g, 5kgs of Potassium Humate per 100kgs of Urea
3.Used as muti-functional compound and basal fertilizer, top dressing, seed fertilizer and foliar fertilizer
Storage
It must be kept in airy, cool, dry places, far from sources of heat/ignition and protected from sunlight.