Knowledge · PVA 2088
Published 2026 · Ningxia Dadi PVA technical desk
If you run Dadi PVA 2088 remoistening adhesive on a production line, the grade you pick decides whether the shift runs clean or fights the recipe all day. Here is the spec we actually hold and why it works.
Dadi PVA 2088 is a 88 mol% hydrolysis grade used for remoistening adhesive . Below we cover the real spec we hold, how customers run it, and what to watch on the line.
| Brand | Dadi (export brand: Ningxia Dadi) |
|---|---|
| Grade / Model | 2088 |
| Product | Polyvinyl Alcohol (PVA) |
| Degree of hydrolysis | 88 mol% |
| Avg. polymerization (DP) | 2000 |
| Viscosity (4% aq., 20C) | grade-specific (see TDS) mPa.s |
| Solubility | partially hydrolyzed |
| China-market code | - |
| CAS / HS code | 9002-89-5 / 39053000 |
| Appearance | white flake, granule or powder |
| Purity | ≥93.0% (grade dependent) |
| pH (4% sol.) | 5-7 |
How it compares
Against 88-series, the 88% hydrolysis grade resists water better but needs hot water to dissolve; against competitors, our ash and volatiles are held tight so lot-to-lot drift is small — the thing emulsion and PVB customers care about most.
Why 2088 works for remoistening adhesive
Low-viscosity, partially hydrolyzed 2088 gives a film that re-tacks on light moisture — the classic gummed-tape base.
How to run it on your line
Coat 3–6% solution on substrate, dry; activate with water at use.
One tip we always give
In humid climates add a release layer or it curls.
From the floor
A stamp/envelope customer uses our low-visc 88-series for gum; a dab of cold water re-tacks, curl solved with a release layer. Our Ningxia Dadi QC keeps each lot sampled to expiry, so any issue is traceable.
FAQ
PVA for gummed tape?
Low-viscosity 88-series — tacks with a dab of cold water.
Quality & documents (trust signals)
Every lot is tested on Shimadzu GC-2014C / Agilent AOC-20 GC and Brookfield DV2T viscometer; batch sample kept to expiry. EN TDS, MSDS, COA provided. REACH and ISO 9001 status available on request [verify against current certificate].
Packaging, MOQ & lead time
25 kg PP woven bag (inner PE); jumbo bag on request. MOQ from 1 MT for stock grades, 16 MT for full container; lead time 7-15 days ex-works Ningxia. Incoterms FOB/CFR/CIF; payment T/T or L/C.
About the supplier
Ningxia Dadi Circulation Development Co., Ltd. (PVA branch since 2009; Phase I 50,000 t + Phase II 80,000 t; ~585 staff; ABB robotic palletizing; Shimadzu GC-2014C + Agilent AOC-20 gas chromatographs + Brookfield DV2T viscometer for QC; named a national first-batch green manufacturing demonstration enterprise in 2017; calcium-carbide to VAM to PVA circular chain.
Written by Li Wei, Senior Technical Sales Engineer, Polyvinyl Alcohol Division — Ningxia Dadi Circulation Development Co., Ltd. - 9 years placing PVA grades with textile, adhesive and construction compounders across Southeast Asia, the Middle East and South America. Replies to most inquiries within one business day.
Get a quote / sample
VAM drives the price; lock a quarterly framework if your volume is steady. We quote FOB/CFR/CIF, T/T or L/C.
Related product: PVA 2088
Remoistenable adhesive, envelope and gummed tape, laminating
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