Does “6000” mean every PEG 6000 molecule has a molecular weight of 6000?

No. PEG-6000 is a distribution of polymer chains. The grade designation does not assign a molecular mass of exactly 6000 to every chain, and specified average ranges can differ between standards. The required standard, molecular-mass range and test method are used to match the quoted grade.

Can a PEG 6000 powder be replaced solely because it shares CAS 25322-68-3?

No. CAS 25322-68-3 identifies polyethylene glycol but does not define an identical grade. Compare the average molecular-mass range and test method, hydroxyl value, water content, particle form and melting range against your specification. A replacement must also suit the intended formulation and process.

Is PEG 6000 powder automatically suitable where a pharmacopoeial or regulated grade is specified?

No. Powder form and CAS number alone do not establish pharmacopoeial compliance. Tell us the required standard and intended use; we can provide the corresponding grade specification and quality documentation for your assessment. Compliance is specific to the quoted grade and the named standard.

Polyethylene Glycol 6000 (PEG-6000) Powder CAS 25322-68-3

PEG-6000 powder (polyethylene glycol 6000, CAS 25322-68-3) is supplied for industrial formulation and processing. Molecular-mass range, particle size and melting range are matched to your mixing, granulation or tabletting process. Send your application, quantity and destination for a quotation; an existing specification helps identify the appropriate grade.

CAS: 25322-68-3
Synonyms: Polyethylene glycol 6000; PEG-6000; Macrogol 6000
Molecular Formula: HO(CH₂CH₂O)nH; a distribution of polyethylene glycol chains. The specified average molecular-mass range depends on the grade and applicable standard.
Grade: PEG-6000 powder is specified by average molecular-mass range and test method, hydroxyl value, water content, melting range and particle specification. For compendial requirements, the quoted grade is matched to the named standard.
Package: Packaging type, liner and net weight are specified in the quotation for the selected grade, order quantity and destination, with suitable moisture protection for transport and storage.
EC / NLP No.: 500-038-2 (No-Longer Polymers)

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Product Description

1 Parameters

2 Applications

3 Storage

4 Quality Documentation

Parameters

CAS Number	25322-68-3
EC / NLP No.	500-038-2 (No-Longer Polymers)
Identity / Formula	HO(CH₂CH₂O)nH; a distribution of polyethylene glycol chains. The specified average molecular-mass range depends on the grade and applicable standard.
Grade / Specification	PEG-6000 powder is specified by average molecular-mass range and test method, hydroxyl value, water content, melting range and particle specification. For compendial requirements, the quoted grade is matched to the named standard.
Key physical data	Hydroxyl value (mg KOH/g) reflects hydroxyl end-group concentration. For PEG chains with two hydroxyl end groups, it can support an estimate of number-average molecular mass on the stated calculation basis; it does not describe the molecular-mass distribution. Water content can be measured by a suitable Karl Fischer method, with units and reporting basis stated. Melting-range results are reported with the test method and endpoint; particle-size data state the measurement method and distribution basis. Bulk density also matters for powder handling.
Packaging	Packaging type, liner and net weight are specified in the quotation for the selected grade, order quantity and destination, with suitable moisture protection for transport and storage.

Applications

PEG-6000 powder is used as a binder and granulation aid in detergent powders, laundry and dishwasher tablets, and cleaning blocks. Particle size and melting characteristics help match the grade to blending, granulation and tabletting. Pharmaceutical-excipient requirements are matched to the named standard and the quoted grade.

For a lower molecular-mass PEG, compare PEG-1500 and its different melting and handling characteristics. PVP K30 is a chemically different binder option for suitable formulations. Neither is an automatic one-for-one substitute for PEG-6000.

PEG-300 is a lower molecular-mass liquid PEG for formulations that need different carrier and handling properties. PEG 600 dioleate is an esterified PEG used as an emulsifier, with a different role from PEG-6000 powder as a binder. These are functional comparisons, not direct replacements.

Storage

Keep PEG-6000 powder tightly closed in a dry, clean area, protected from moisture, excessive heat and contamination. Reseal after use. The supplied grade TDS and SDS describe its storage and handling conditions.

Quality Documentation

We can provide a COA (Certificate of Analysis), TDS (Technical Data Sheet) and SDS (Safety Data Sheet) for the quoted PEG-6000 grade. Where residual ethylene oxide and 1,4-dioxane limits are included in the agreed specification, we can provide relevant analytical documentation, including gas chromatography (GC) or headspace-GC reports where these methods apply. These reports identify each residue and report its concentration in units such as mg/kg.

FAQ - Technical & Supply Chain

Q:
Does “6000” mean every PEG 6000 molecule has a molecular weight of 6000?

A: No. PEG-6000 is a distribution of polymer chains. The grade designation does not assign a molecular mass of exactly 6000 to every chain, and specified average ranges can differ between standards. The required standard, molecular-mass range and test method are used to match the quoted grade.
Q:
Can a PEG 6000 powder be replaced solely because it shares CAS 25322-68-3?

A: No. CAS 25322-68-3 identifies polyethylene glycol but does not define an identical grade. Compare the average molecular-mass range and test method, hydroxyl value, water content, particle form and melting range against your specification. A replacement must also suit the intended formulation and process.
Q:
Is PEG 6000 powder automatically suitable where a pharmacopoeial or regulated grade is specified?

A: No. Powder form and CAS number alone do not establish pharmacopoeial compliance. Tell us the required standard and intended use; we can provide the corresponding grade specification and quality documentation for your assessment. Compliance is specific to the quoted grade and the named standard.

Ordering & Documentation

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

Documents

Tell us which documents your procurement team needs. Before an order, we will check whether the quoted source can provide them for the offered lot.

Quotation

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

Sample & Supply

Ask whether samples, trial quantities or repeat orders are possible. We will check each request against the sourced product and current offer.

Storage & Shipping

Product-specific conditions are confirmed before order.

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