Polyethylene Glycol 200 (PEG)

Certificate #: TYP-POLYETHYLENE
Lot Number: TYPICAL SAMPLE
Test Date: 2026-07-17
Category: Alcohols & Glycols (B)
CAS Number: 25322-68-3
Formula: H(OCH2CH2)nOH
Computed Assay: 99.50%(100 − Σ impurities)

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Sample COA. Lot-specific COAs ship with each order.

2D chemical structure of Polyethylene Glycol 200 (PEG) — Structure · PubChem

Last reviewed 2026-05-20.

COA · Answer summary

Typical certificate of analysis for Polyethylene Glycol 200 (PEG). Lot-specific results ship with every order.

Assay (computed): 99.50%

Specifications

Parameter	Specification	Typical Result	Test Method
Assay (GC)	99.5 – 100.5 %	99.5 %	GC
Carbonate	≤ 1.5 %	0.45 %	Titration
Color (APHA)	≤ 5 APHA	1 APHA	APHA
Iron (Fe)	≤ 10 ppm	0.01 ppm	ICP-MS
Specific Gravity @20°C	0.785 – 0.787 g/mL	0.786 g/mL	Hydrometer @ 25°C
Water (Karl Fischer)	≤ 0.1 %	0.05 %	Karl Fischer

Generated 2026-07-17. Published by Alliance Chemical from first-party canonical product data. Our authority is hands-on chemical handling, DOT/GHS-compliant shipping, and government-registered distribution — not bench chemistry. Values are representative of typical production lots and reflect the published specification range. Lot-specific COAs are provided with every shipment.