FLOPAM AN 945 VHM Equivalent — Ultra High MW Anionic PAM
The VHM suffix is the top of the FLOPAM molecular weight ladder, and SNF publishes AN 945 VHM and AN 956 VHM as high charge density grades at ultra high molecular weight. That combination — high charge together with the longest chains in the range — is the hardest part of the anionic spectrum to match, because most suppliers trade one property off against the other. Our closest grade sits at very high charge density and very high molecular weight on our own scale. If your bags read a standard or SH suffix rather than VHM, the [AN 945 equivalent](/products/brand-equivalents/flopam-an-945-equivalent) page is the correct starting point instead.
Head-to-Head Comparison
Side-by-side data: Our equivalent vs SNF FLOPAM AN 945 VHM
| Parameter | Our Equivalent | SNF FLOPAM AN 945 VHM |
|---|---|---|
| Type | Anionic PAM powder | Anionic PAM powder |
| Charge Density | Very high (our scale) | High (SNF published scale) |
| Molecular Weight | Very high (our scale) | Ultra high (SNF published scale, VHM suffix) |
| Position in range | Top of our anionic molecular weight ladder | VHM is the top suffix tier in the FLOPAM AN range |
| MOQ | 500 kg | Set by regional distributor |
| Lead Time | 7–10 days ex-works | Set by regional distributor |
| Trial Sample | Free 5 kg with test protocol | Via distributor request |
Specifications
| Our Grade | Contact us for grade selection |
| Positioned Against | SNF FLOPAM AN 945 VHM / AN 956 VHM |
| Type | Anionic (partially hydrolysed polyacrylamide) |
| Molecular Weight | Very high (our scale) |
| Charge Density | Very high (our scale) |
| Appearance | White granular powder |
| Packaging | 25 kg PP woven bags + PE liner |
Key Features
- Positioned against the SNF published AN 945 VHM and AN 956 VHM profiles
- Top of our molecular weight ladder at very high charge density
- Built for high-rate thickeners and coarse tailings where settling rate governs
- Covers oilfield water treatment: frac flowback flocculation and dewatering
- Free trial sample with settling or jar test protocol
- Batch-specific TDS, COA and MSDS with every shipment
Applications
- High-rate and paste thickeners where settling rate sets throughput
- Coarse tailings settling and dewatering
- Frac flowback and produced water at elevated solids loading
- Iron ore, copper and coal concentrator thickener duty
- Clarifier overflow polishing where carryover is the binding constraint
Get a Quote for the SNF FLOPAM AN 945 VHM Equivalent
Tell us the grade you run now and your monthly volume. Quotation with full specifications and batch COA within 24 hours. Free trial sample available so you can confirm performance by jar test before committing.
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Dosage Guide
Make up ultra high molecular weight anionic polymer at 0.05 to 0.1 percent rather than the 0.25 to 0.5 percent common for lower molecular weight grades, because solution viscosity climbs steeply with chain length. Allow full ageing before dosing and establish demand by settling test on the target slurry.
Frequently Asked Questions — FLOPAM AN 945 VHM Equivalent — Ultra High MW Anionic PAM
What does the VHM suffix actually mean?
It is the highest molecular weight tier SNF publishes in the FLOPAM AN range, above SH and HD. Charge density is carried by the digits in the number and stays in the same band across suffixes, so AN 945 and AN 945 VHM share a charge band and differ in chain length. Since chain length is what drives settling rate, the suffix is the more important half of the grade name.
Why is high charge plus ultra high molecular weight hard to supply?
The two properties pull against each other in manufacture. Raising the degree of hydrolysis to lift charge tends to work against building the longest chains, so a lot of ranges have a high charge grade and a high molecular weight grade but nothing convincing at both. That is the corner of the spectrum the VHM grades occupy, and it is where a substitution most often fails on a like-for-like number match.
Will ultra high molecular weight polymer survive my pumps?
Very long chains are more shear sensitive, and mechanical degradation at the dosing pump, in a long delivery line or through a centrifugal transfer can cost you the settling rate you paid for. Dose as far downstream as the mixing allows, use a low-shear progressing cavity or diaphragm pump for the neat solution, and make up at 0.05 to 0.1 percent so the solution is not so viscous that it needs aggressive pumping.
Should I be on this page or the standard AN 945 page?
Read the suffix on your bags. VHM belongs here. Standard, HD or SH belong on the [AN 945 equivalent](/products/brand-equivalents/flopam-an-945-equivalent) page. If the purchase order shows only a number with no suffix, ask your current supplier to confirm before either of us selects a grade — the number alone does not identify the polymer.
Is your grade a licensed copy of AN 945 VHM?
No. It is an independently manufactured anionic polyacrylamide positioned against the published AN 945 VHM profile. Descriptors follow different in-house scales, so we show each side on its own scale and ask you to confirm by settling test on your own slurry before changing supply.
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Trademark notice. SNF FLOPAM AN 945 VHM and all other third-party product and brand names on this page are trademarks or registered trademarks of their respective owners. Henan Jinghua New Material Technology Co., Ltd. is not affiliated with, endorsed by, sponsored by or authorised by those owners, and no such relationship is implied. Those names are used here for the sole purpose of identifying the products our grades are compared against, which is necessary to describe what we supply. Our products are independently manufactured and are not licensed copies. Grade descriptors quoted for third-party products are taken from each manufacturer’s own published literature and follow that manufacturer’s own scale; we do not publish figures those manufacturers do not publish. Performance on your process should be confirmed by jar test or CST test before any change of supply.