Insoluble Humic Acid Powder 70%
The High-Humic, Low-Ash Cut for Drilling Fluid and Industrial Humates
Organic matter 82% min
Fineness 80–100 mesh
Code JFHA-HA-P70
80–100 mesh black powder · 70% humic acid · 82% organic matter · low ash · oilfield & industrial
Product Overview
Insoluble Humic Acid Powder 70% is the top cut of our milled leonardite powder — the same seam and 80–100 mesh grind as the rest of the range, taken at the 70% humic-acid cut. It is dried, classified and bagged with no extraction and no chemical solubilisation, so the humic fraction stays in its native, water-insoluble form.
What makes the 70% cut different from the lower grades is not just the humic number — it is the low ash content. Ash is the inert mineral residue left after the organic fraction burns off, and in oilfield and industrial use it is a liability: in a drilling fluid it adds unwanted solids; in a humate salt it dilutes the active content. The 70% cut carries the least ash of the powder range, which is why it is the grade specified for oilfield drilling-fluid use, for sulfonated humate, and for other industrial humate applications.
Insoluble Humic Acid Powder 70% is the premium cut — bought where the analysis and the ash floor matter more than the price per tonne.
Key Benefits
Highest humic cut of the powder range
At 70% minimum humic acid and 82% minimum organic matter, this is the most concentrated insoluble powder we produce — the grade to specify when the humic number is the buying criterion.
Low ash — the property oilfield and industry pay for
Ash is inert mineral residue. In a drilling fluid it is unwanted solids; in a humate salt it dilutes active content. The 70% cut carries the least ash of the range, which is why it is the oilfield and industrial grade.
Drilling-fluid filter-loss reducer and mud conditioner
React or use directly as a freshwater drilling-fluid additive — reduces fluid loss and conditions the mud. Typical dosage 3–5% of the fluid system.
Feedstock for sulfonated and other humate salts
Sulfomethylate to sulfonated humate, or react with caustic to sodium/potassium humate, with the highest active content of the powder grades.
One seam, four cuts, one supplier
40%, 50%, 60% and 70% off the same mill. Hold one relationship while covering soil amendment through to oilfield specification.
Heavy metals below detection, every batch
Pb, As, Hg, Cd and Cr tested against GB 18877 and reported as not detected, with a batch-specific COA.
Technical Specification
| Parameter | Specification | Test standard |
|---|---|---|
| Humic acid (dry basis) | 70.0% min | GB/T 11957-2001 |
| Organic matter (dry basis) | 82.0% min | NY 525-2012 |
| Moisture | 25.0% max | GB/T 11957-2001 |
| pH (1:100) | 5.0 – 7.0 | GB/T 33804-2017 |
| Fineness | 80 – 100 mesh | Sieve method |
| Water solubility | Nil (insoluble by design) | — |
| Ash (dry basis) | Low — see note | GB/T 11957-2001 |
| Appearance | Black powder | Visual |
| Product code | JFHA-HA-P70 | — |
Specification values are guaranteed minimums on a dry basis, taken from the batch Certificate of Analysis and tested against the stated Chinese industry standards. Every shipment travels with its own COA stating the tested values.
Need the full Certificate of Analysis, MSDS, or TDS for your formulation or tender file?
Form & Solubility
Form: dry black powder, 80–100 mesh, slightly damp to the touch (up to 25% natural moisture). Free-flowing but not fluid.
In water: insoluble. It does not dissolve and must not enter fertigation, drip lines or liquid tanks. In oilfield use it is applied to the mud system as a functional additive, not as a solution.
As an industrial feedstock: the low-ash, high-humic cut reacts cleanly to sodium/potassium humate and sulfonated humate, giving the highest active content of the powder grades.
In a dry blend: disperses well; expect dust control on the line.
Which insoluble grade fits your process?
| Grade | Form | Humic acid | Organic matter | Size | Best for |
|---|---|---|---|---|---|
| Humic Acid Powder | 80–100 mesh powder | 40–70% | 70–82% | 80–100 mesh | Granulation feed, soil conditioner base, blending |
| Humic Acid Crystal | 2–4 mm crystal | 60% min | — | 2–4 / 1–6 mm | Direct soil application, premium organic blends |
| Humic Acid Granule | 2–4 mm round granule | 40% min | 60% min | 2–4 mm | Bulk blending, broadcasting, organic fertilizer |
| Humic Acid Prills | 2–4 mm high-hardness | 40% min | 60% min | 2–4 mm | Urea/blending, mechanical spreading, export |
| Microbial Humic Granule | 2–4 mm inoculated | 40% min | 60% min | 2–4 mm | Bio-organic fertilizer, root-zone inoculation |
All five grades come from the same leonardite seam and carry the same heavy-metal declaration (Pb, As, Hg, Cd, Cr all below detection, GB 18877). They differ in particle form and where they fit in your process — not in origin.
Applications & Dosage
Specified where the humic number and the ash floor decide the buy:
| Application | How to use | Rate |
|---|---|---|
| Oilfield drilling fluid | Freshwater drilling-fluid filter-loss reducer and mud conditioner. Applied to the mud system as a functional additive. | 3 – 5% of fluid |
| Sulfonated humate production | Sulfomethylate to sulfonated humate for drilling, water treatment and ceramic use. | per process |
| Sodium / potassium humate feedstock | React with caustic for the highest-active-content humate salts of the powder range. | per process |
| Ceramic pug additive | Used as a binder/plasticiser in ceramic bodies. | per process |
| Water treatment | Applied for heavy-metal binding in industrial wastewater treatment. | per process |
| Premium soil & organic use | Where a high humic claim is registered and the ash floor matters. | 300–750 kg/ha |
Packaging & Storage
| Pack size | Description |
|---|---|
| 20 kg / 25 kg | Woven PP bag with inner PE liner — standard export packing |
| 50 kg | Woven PP bag with inner liner — for high-volume programmes |
| 1000–1100 kg | Jumbo bag with discharge spout, 4 lifting loops |
| Custom | Private-label printed bag, OEM specification, retail sizes on request |
Storage: Store under cover, on pallets, in a dry ventilated place. Up to 25% moisture — keep off bare concrete. Stable for years; may compact slightly, which breaks up easily. Shelf life: 24 months in original, unopened packaging.
Custom packaging, private-label printing and OEM specifications are available on request. Packaging photos are available in the product gallery.
Successful Cases
Oilfield chemical supplier, China
Buys 70% low-ash powder as a freshwater drilling-fluid filter-loss reducer. Specified the 70% cut specifically over 50/60% because the lower ash means fewer inert solids in the mud system — the property their drilling customers actually measure. Typical inclusion 3–5% of the fluid.
Explore humic acid applications →
Industry · Oilfield Humate
Humate-salt producer, Middle East
Reacts 70% powder to sodium and potassium humate for agriculture and water treatment. Chose the top cut because the higher humic and lower ash give the highest active content in the finished salt, which is what their specification states.
Explore humic acid applications →
Full case studies with crop data are published in our application sectors.
Frequently Asked Questions
Why is the 70% cut used in oilfield rather than the lower grades?
Because of the ash floor. Ash is inert mineral residue; in a drilling fluid it is unwanted solids, and in a humate salt it dilutes active content. The 70% cut carries the least ash of the powder range, so it is the grade oilfield and industrial buyers specify. The lower grades are soil and fertilizer grades, not oilfield grades.
What does ‘low ash’ mean in the spec table?
Ash is the mineral residue left after the organic fraction is removed. We state it as ‘low’ because the value is grade-dependent and confirmed per batch on the COA rather than quoted as a single fixed number — ask for the COA of the exact cut you are ordering and we will state it.
Can I react this to sodium or potassium humate?
Yes, and it gives the highest active content of the powder grades because of the high humic cut and low ash. We can toll the reaction or supply the finished salt.
How does it differ from the 40/50/60% cuts?
Same seam and grind, different humic-acid cut — 40/50/60/70%. The 70% cut is the premium: highest humic, lowest ash, specified for oilfield and industrial humates. If you only need soil organic matter, the 40% cut is far cheaper and does the same job. Buy the cut your specification actually requires.
Also Available in This Family
Insoluble Humic Acid Powder 50% – Humate-Salt Feedstock & General AgricultureInsoluble Humic Acid Powder 40% – Bulk Soil Amendment & Organic Fertilizer Base
Microbial Humic Granular Fertilizer – Humic Granule + Bacillus Inoculant
Insoluble Humic Acid Prills – 2–4 mm High-Hardness, 5% Max Moisture
Insoluble Humic Acid Granule – 2–4 mm Disc-Granulated, 40% Humic Acid
Insoluble Humic Acid Crystal – 60% Humic Acid, 2–4 mm Irregular GranuleInsoluble Humic Acid Powder 60% – Standard Grade from LeonarditeNeed a quotation or a sample?
Tell us your application, target market and packaging — we will come back with specification, price and lead time.
