What is Glyceryl Monooleate CAS 111-03-5?

Glyceryl monooleate, commonly called GMO, is the monoester of glycerol and oleic acid. It is supplied as an amber to pale-yellow oily liquid or soft paste and is used as a lipophilic emulsifier, lubricant and plastic additive.

How does GMO differ from glyceryl monostearate?

GMO is based on unsaturated oleic acid, while GMS is based on saturated stearic acid. The cis double bond in the oleyl chain reduces crystallinity, so GMO is typically a liquid or soft material with a lower melting point than GMS.

What kind of emulsifier is GMO?

GMO has a low HLB value of approximately 3-4 and is primarily a water-in-oil emulsifier. For oil-in-water systems it is usually combined with a higher-HLB emulsifier to form a balanced emulsifier system.

What are the main applications?

It is used in food emulsifiers, cosmetic and pharmaceutical creams, lubricants, metalworking fluids, textile auxiliaries, antistatic agents and plastic films. In PVC film it also acts as an internal anti-fogging additive.

Why is GMO used as an anti-fogging additive in PVC film?

GMO migrates to the film surface and lowers the surface tension of condensed water, allowing moisture to spread into a transparent film instead of forming visible droplets. This helps maintain clarity in food-packaging and agricultural films.

Which grade and packaging does this listing cover?

The listing is industrial, cosmetic and pharmaceutical auxiliary grade with GMO assay at least 99%. It is supplied in 25 kg net HDPE drums or iron drums with a food-grade liner, with 200 kg drums available on request.

What specifications should be checked before ordering?

Confirm appearance, monoester content, free glycerol, acid value, iodine value, saponification value, peroxide value, moisture, heavy metals and any food or pharmaceutical suitability data. Request the batch analysis, technical data and safety information.

How should GMO be stored and handled?

Store in tightly closed containers in a cool, dry, ventilated area away from heat, light, strong oxidizers and moisture. Avoid prolonged high temperatures, use suitable PPE and follow the safety information for handling and disposal.

Glyceryl Monooleate CAS 111-03-5

Glyceryl Monooleate (GMO, monoolein), CAS 111-03-5, is a high-purity non-ionic surfactant supplied as an emulsifier, dispersant and lubricant for pharmaceuticals, cosmetics, food, coatings and industrial formulations. Confirm the required grade, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 111-03-5
Synonyms: GMO, Monoolein, Glycerol monooleate, 1-Oleoyl-rac-glycerol, Glyceryl oleate
Einecs: 203-827-7
Molecular Formula: C₂₁H₄₀O₄
Grade: Industrial / Cosmetic & Pharmaceutical auxiliary grade, Assay ≥99% (GMO)
Package: 25 kg net HDPE drum or iron drum with food-grade liner; 200 kg drum available on request

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Product Description

Glyceryl Monooleate, CAS 111-03-5, also known as GMO or monoolein, is the monoester of glycerol and oleic acid; the EC/EINECS number is 203-827-7.

Synonyms: GMO; monoolein; glycerol monooleate; 1-oleoyl-rac-glycerol; glyceryl oleate.

CAS: 111-03-5.

Molecular formula: C₂₁H₄₀O₄.

Molecular weight: 356.54 g/mol.

EC number: 203-827-7.

It is an amber to pale-yellow oily liquid or soft paste, insoluble in water and soluble in ethanol and oils.

The assay (glyceryl monooleate) is ≥99.0%; acid value ≤6.0 mg KOH/g and free glycerol ≤7.0%.

The melting point is 35–37 °C; density is about 0.94 g/cm³ at 35 °C.

It is used as a lipophilic emulsifier with a low HLB of about 3–4, primarily for water-in-oil systems.

It is used in food emulsifiers, cosmetic and pharmaceutical creams, lubricants and metalworking fluids.

It is used in textile auxiliaries, antistatic agents and plastic films as an internal anti-fogging additive.

Compared with glyceryl monostearate, GMO is based on unsaturated oleic acid and has a lower melting point.

Confirm appearance, monoester content, free glycerol, acid value, iodine value, saponification value, peroxide value, moisture, heavy metals and suitability data.

Store in tightly closed containers in a cool, dry, ventilated area away from heat, light, strong oxidizers and moisture.

Confirm packaging with the requested quantity and destination requirements.

Document requirements should be confirmed from the current specification, SDS, COA or other product-specific files.

The page is an RFQ entry point and does not state stock, price, MOQ or fixed lead time.

For an RFQ, state the intended use, required grade, quantity, packaging, destination and document needs.

FAQ - Technical & Supply Chain

Q:
What is Glyceryl Monooleate CAS 111-03-5?

A: Glyceryl monooleate, commonly called GMO, is the monoester of glycerol and oleic acid. It is supplied as an amber to pale-yellow oily liquid or soft paste and is used as a lipophilic emulsifier, lubricant and plastic additive.
Q:
How does GMO differ from glyceryl monostearate?

A: GMO is based on unsaturated oleic acid, while GMS is based on saturated stearic acid. The cis double bond in the oleyl chain reduces crystallinity, so GMO is typically a liquid or soft material with a lower melting point than GMS.
Q:
What kind of emulsifier is GMO?

A: GMO has a low HLB value of approximately 3-4 and is primarily a water-in-oil emulsifier. For oil-in-water systems it is usually combined with a higher-HLB emulsifier to form a balanced emulsifier system.
Q:
What are the main applications?

A: It is used in food emulsifiers, cosmetic and pharmaceutical creams, lubricants, metalworking fluids, textile auxiliaries, antistatic agents and plastic films. In PVC film it also acts as an internal anti-fogging additive.
Q:
Why is GMO used as an anti-fogging additive in PVC film?

A: GMO migrates to the film surface and lowers the surface tension of condensed water, allowing moisture to spread into a transparent film instead of forming visible droplets. This helps maintain clarity in food-packaging and agricultural films.
Q:
Which grade and packaging does this listing cover?

A: The listing is industrial, cosmetic and pharmaceutical auxiliary grade with GMO assay at least 99%. It is supplied in 25 kg net HDPE drums or iron drums with a food-grade liner, with 200 kg drums available on request.
Q:
What specifications should be checked before ordering?

A: Confirm appearance, monoester content, free glycerol, acid value, iodine value, saponification value, peroxide value, moisture, heavy metals and any food or pharmaceutical suitability data. Request the batch analysis, technical data and safety information.
Q:
How should GMO be stored and handled?

A: Store in tightly closed containers in a cool, dry, ventilated area away from heat, light, strong oxidizers and moisture. Avoid prolonged high temperatures, use suitable PPE and follow the safety information for handling and disposal.

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