Dadi PVA 2688 Manufacturer | 88 mol% DP2600 PVA

Dadi PVA grade

Grade 2688 · mill code L088-60

Polyvinyl alcohol, white flake or powder. 88 mol% grade at DP 2600 — high solids with a workable body for thick-film systems.

88 mol% hydrolysisAvg. DP 2600CAS 9002-89-5HS 39053000

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Data sheet

Typical Properties

Typical values, not for specification. TDS available on request.
Product	Polyvinyl alcohol (PVA)
Grade / mill code	PVA 2688 / L088-60
Degree of hydrolysis	88 mol%
Average polymerization (DP)	2600
Viscosity, 4% aq. at 20 °C	Typical values, not for specification — see TDS
Solubility	Partially hydrolysed — disperses in cold water
Appearance	White flake, granule or powder
Purity	≥93.0% (grade dependent)
pH (4% solution)	5–7
CAS / HS code	9002-89-5 / 39053000

Grade specific

High-Solids Thick-Film Body

Body at high solids

At 8–12% the solution still spreads and holds a bead, which is what thick-film adhesive and mastic formulas need.

Longer dissolution

DP 2600 takes time. Use hot water and high shear, and plan a dedicated make-down station rather than tying up a main tank.

Watch the gel point

Cooling a concentrated 88 mol% solution below 40 °C can set a gel. Keep lines and pumps warm during winter production.

On the line

Processing Guidelines

Make-down. Disperse in room-temperature water first, then raise to 70–80 °C to finish dissolution. Typical solution strength is 5–10%. Always add flake into water, never water onto flake, and filter through 60–80 mesh. Strong alkali will cut viscosity — keep pH below 9 unless the formula calls for it.
Concentration. Work at the strength the application needs — adding water later to a gelled batch does not restore the film.
Filtration. Screen the solution before it reaches the machine; gel particles that pass are defects that cannot be removed downstream.

Where it runs

Applications

High-solids adhesive8–12% solution

Thick-film coating6–10% solution

Construction binder1–3% of dry mix

All applications

Supply

Packing & Delivery

25 kg PP woven bag, PE liner

Batch-coded 25 kg bags ready for palletising

Batch coded per lot

16 MT

Per 20′ FCL, mixed grades allowed. Jumbo bags on request.

MOQ. From 1 MT for stock grades; 16 MT for a full container. Jumbo bags on request.
Lead time. 7–15 days ex-works Ningxia; 25–35 days for non-stock or tailored viscosity.
Terms. FOB, CFR or CIF; T/T or L/C at sight.

Newsroom

Technical & Commercial Notes

Grade-specific articles are published in the newsroom, grouped by the grade they belong to.

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Cross reference

Direct from the plant

Talk to Fred Wang

Send the grade, quantity, destination port and incoterm. You get a firm quote, a free 500 g sample and English TDS, MSDS and COA from the lot we ship.

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PVA 2688