Dadi PVA 1899 Manufacturer | 99 mol% DP1800 PVA

Dadi PVA grade

Grade 1899 · mill code L099-18

Polyvinyl alcohol, white flake or powder. Fully hydrolysed 99 mol% grade at DP 1800 — the balance point between strength and viscosity.

99 mol% hydrolysisAvg. DP 1800CAS 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 1899 / L099-18
Degree of hydrolysis	99 mol%
Average polymerization (DP)	1800
Viscosity, 4% aq. at 20 °C	Typical values, not for specification — see TDS
Solubility	Fully hydrolysed — dissolves in 85–95 °C 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

Balanced Fully Hydrolysed Workhorse

1899 exists because 2099 and 2499 are sometimes more grade than a formula needs: more viscosity, more energy, more pump pressure for strength the application does not use.

Middle of the range — DP 1800 with full hydrolysis gives strong, water-resistant film without the handling penalty of a 2400 grade.
Lower energy bill — Make-down and pumping cost less than with higher DP grades, which matters on high-volume size boxes.
Drop-in substitution — Where a specification says 99 mol% and 20–30 mPa·s, 1899 usually lands inside the window without reformulation.

On the line

Processing Guidelines

Make-down. Dissolve in 85–95 °C water under low-speed agitation and add flake slowly to avoid lumping. Typical solution strength is 6–10% for sizing and 3–6% for binders. Hold the tank at 60–70 °C to prevent gelation, and filter through 80 mesh before the size box.
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

General sizing5–8% solution

Water-resistant binder4–7% solution

Paper coating3–6% solution

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 1899

Typical Properties

Balanced Fully Hydrolysed Workhorse

Balanced Fully Hydrolysed Workhorse

Processing Guidelines

Applications

Packing & Delivery

Technical & Commercial Notes

Related Grades

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