Does Polyether Polyol 220 identify one universal PPG 2000 specification?

No. “220” is a commercial grade designation, not a universal definition of molecular-weight distribution, functionality, or reactivity. For polyurethane use, match the offered hydroxyl value, functionality, viscosity, water, acidity, and the approved reference specification.

Why cannot PPG 2000 quality be defined by CAS number or nominal molecular weight alone?

PPG 2000 is a polyether distribution, not one molecule. In reactive systems, hydroxyl value and functionality set the isocyanate calculation, while water, acidity, and viscosity influence processing. Use measured batch data and formulation trials for qualification.

PPG 2000 (Polyether Polyol 220-Type) CAS 25322-69-4

PPG 2000 , also known as Polypropylene Glycol 2000 , is a polyether polyol with a nominal average molecular weight near 2,000. It is identified by the polymeric CAS No. 25322-69-4 and EC No. 500-039-8 . PPG 2000 is a molecular-weight distribution rather than one pure compound. For polyurethane use, buyers should control hydroxyl value, functionality, viscosity, water, acidity and color because these values affect isocyanate demand and processing. The Polyether Polyol 220 designation must be matched through the current grade specification, COA and formulation trial.

CAS: 25322-69-4
Synonyms: Polypropylene Glycol 2000, Polyoxypropylene Glycol, Poly(propylene oxide), PPG Polyol, Polyether Polyol
Einecs: 500-039-8
Grade: Confirm the commercial grade code, average molecular mass or composition distribution, hydroxyl or viscosity data, water and physical form against the current TDS and COA.
Package: State required quantity, physical form and destination; confirm the current bag or container, liner, net weight, temperature handling and transport requirements before quotation.

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Product Description

1 Physicochemical profile

2 Application and grade selection

3 Storage and handling

4 Safety and supply documentation

Physicochemical profile

Item	Technical guidance
Product identity	PPG 2000, or Polypropylene Glycol 2000; the Polyether Polyol 220 designation must be matched through the grade specification
CAS / EC	25322-69-4 / 500-039-8
Composition	Polyether-polyol molecular-weight distribution with nominal average molecular weight near 2,000
Molecular formula	No single fixed molecular formula or molecular-purity percentage applies to the polymer distribution
Typical physical form	Colorless to pale viscous liquid; appearance and viscosity are controlled by the supplied grade and temperature
Key quality controls	Hydroxyl value, functionality, viscosity, water, acidity, color and nominal molecular-weight range

Application and grade selection

PPG 2000 is used as a polyether-polyol or formulation component in polyurethane, lubricity, defoaming and chemical-intermediate applications. In polyurethane systems, hydroxyl value and functionality determine isocyanate demand more directly than the trade name alone.

Match Polyether Polyol 220 through hydroxyl value, functionality, catalyst or additive status and the complete supplier specification.
Run formulation trials for reactivity, viscosity, foam structure, mechanical properties or lubricity as relevant to the intended process.
Do not transfer flash point, solubility or viscosity values from a different PPG molecular-weight grade.

For related polypropylene glycol molecular-weight grades, see PPG-1000 and PPG-200.

Storage and handling

Keep the package closed and dry to limit moisture uptake and contamination. Store within the temperature range stated by the supplier and mix bulk material as required before representative sampling. Follow the SDS for fire precautions and incompatible materials.

Safety and supply documentation

Personal protection, spill response, fire control and disposal must follow the exact product SDS. Empty packages may retain residue and should be handled under the site’s approved procedure.

A purchase specification should state hydroxyl value, functionality, viscosity, water, acidity, color, package, quantity, destination and required COA, TDS and SDS.

FAQ - Technical & Supply Chain

Q:
Does Polyether Polyol 220 identify one universal PPG 2000 specification?

A: No. “220” is a commercial grade designation, not a universal definition of molecular-weight distribution, functionality, or reactivity. For polyurethane use, match the offered hydroxyl value, functionality, viscosity, water, acidity, and the approved reference specification.
Q:
Why cannot PPG 2000 quality be defined by CAS number or nominal molecular weight alone?

A: PPG 2000 is a polyether distribution, not one molecule. In reactive systems, hydroxyl value and functionality set the isocyanate calculation, while water, acidity, and viscosity influence processing. Use measured batch data and formulation trials for qualification.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Support is available for samples, trial orders, bulk and repeat supply.

Storage & Shipping

Product-specific conditions are confirmed before order.

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