Why do different PEG oleate grades share the same CAS number?

CAS 9004‑96‑0 represents a UVCB category covering PEG monooleates with different PEG molecular weights.

Is PEG Monooleate water soluble?

It is dispersible or soluble in water depending on PEG molecular weight and formulation conditions.

PEG Monooleate (Polyethylene Glycol Oleate) CAS 9004-96-0

PEG Monooleate, also known as Polyethylene Glycol Oleate, is a nonionic surfactant formed by esterification of polyethylene glycol with oleic acid. Identified by the UVCB CAS No. 9004‑96‑0, it provides effective emulsification and solubilization in aqueous and oil systems. PEG Monooleate is commonly used as an emulsifier and solubilizer in industrial, cosmetic, and technical formulations where good compatibility and stability are required. The product is supplied with standard documentation including MSDS, TDS, and COA.

CAS: 9004-96-0
Synonyms: PEG Monooleate, Polyethylene Glycol Oleate, PEG Oleate, Nonionic Emulsifier
Einecs: 500-033-6
Molecular Formula: C₂₀H₃₈O₃
Grade: Industrial grade 99%
Package: 200kg iron drum or 50kg plastic drum packaging

Request a quote

Share:

Product Description

1 Physicochemical properties

2 Application Areas

3 Storage conditions

4 ‌‌Safety precautions

Physicochemical properties

Property	Description
Molecular Weight	326.514
Appearance	Brown viscous liquid (also described as amber liquid or light yellow oily substance in some sources)
Density	0.924 g/cm³ (at 25℃)
Boiling Point	437.5℃ (at 760 mmHg)
Flash Point	165℃ (also reported as 113℃ in some sources, depending on the testing method)
Refractive Index	1.468 (at 20℃)
Solubility	Soluble in toluene, ethanol, and acetone; dispersible in water (also reported as easily soluble in water in some sources)
Stability	Stable under normal storage conditions
HLB Value	Approximately 6.5 (for Emulsifier A-103, varies depending on the specific product and manufacturer)

Application Areas

Industry: metal cleaning agents, cutting fluid emulsifiers, plastic antistatic agents.
Textile: Softener, antistatic agent, dyeing auxiliary agent.
Cosmetics: O/W emulsifier (must comply with pharmacopoeia standards).
Pesticides: emulsifier for insecticides, additive for water-soluble coatings.

Storage conditions

It is necessary to maintain a dry and sealed environment to avoid hydrolysis or oxidation caused by moisture or long-term exposure to air. Some manufacturers specifically indicate that it should be placed in a cool and ventilated place, and the temperature should not be too high

‌‌Safety precautions

Non-ionic surfactant, generally low toxicity.
Wear protective gloves/goggles during handling.
Dispose of waste according to local regulations.

FAQ - Technical & Supply Chain

Q:
Why do different PEG oleate grades share the same CAS number?

A: CAS 9004‑96‑0 represents a UVCB category covering PEG monooleates with different PEG molecular weights.
Q:
Is PEG Monooleate water soluble?

A: It is dispersible or soluble in water depending on PEG molecular weight and formulation conditions.

Documents

Documents and Product Support

For product review and sourcing evaluation, supporting documents can be coordinated according to the product type, inquiry stage, and order requirements.

COA for batch-based quality reference
TDS for key physical and chemical information
SDS / MSDS for handling, storage, and safety reference
Packing information for sample, trial, and bulk orders
Technical communication based on application and specification requirements

Quotation

Information to Confirm Before Quotation

Clear sourcing information helps reduce specification mismatch and allows a more accurate quotation before sample or bulk order discussion.

Product name and CAS number
Application or intended end use
Required purity, grade, or specification
Sample quantity, trial order, or bulk demand
Preferred packing form or net weight
Destination country or port
Required documents or compliance expectations

Storage & Handling

Packaging, Storage, and Handling Notes

Packaging form, storage conditions, shelf life, and shipment arrangements should be confirmed according to the product characteristics, package size, and destination requirements.

Before order confirmation, buyers are advised to review the corresponding product documents and confirm whether any special storage, labeling, or handling requirements apply.

Supply Support

Sample, Bulk Order and Repeat Supply Support

Support can be arranged for sample discussion, bulk supply planning, packaging confirmation, and routine sourcing communication based on the actual product and order requirements.

For repeat-use formulations or long-term procurement plans, buyers may discuss specification consistency, packaging preferences, delivery expectations, and document coordination in advance.

Contact Form

Use our contact form to send us your questions, suggestions or comments. We will respond as soon as possible.

Product Categories

Tags:

Nonionic Emulsifier Oleate Emulsifier PEG Monooleate

Current Language

Change Language