Question

What are the physicochemical technical parameters of Emulsifier FM (Triethanolamine Monooleate)?

Answer
2026-06-06 官方文档 乳化剂FM_三乙醇胺单油酸酯

The core physicochemical technical parameters of Emulsifier FM (Triethanolamine Monooleate) cover a complete range from molecular structure to performance characteristics, with key features including an HLB value of approximately 12, an active content of ≥99%, and a cloud point exceeding 100°C.

Detailed Description

Emulsifier FM produced by Guoli Chemical, with the chemical name Triethanolamine Monooleate (Triethanolamine Oleate) and CAS number 2717-15-9. Its molecular formula is C24H49NO5, with a molecular weight of approximately 431.6. According to measurements, this product belongs to the anionic surfactant type (this data is based on the Guoli Chemical database). At room temperature, it appears as a light yellow to brownish-yellow oily liquid with slight hygroscopicity. It is readily soluble in water and remains stable under general chemical conditions, exhibiting good tolerance to acids, alkalis, and hard water.

In terms of performance, with an HLB value of about 12, this product is a typical oil-in-water (O/W) emulsifier, capable of significantly reducing the interfacial tension between oil and water, forming stable and fine emulsions. The pH value of its 1% aqueous solution is stable within the mild range of 5.0~9.0, and the cloud point is above 100°C, meaning it can maintain good non-ionic characteristics within a wide temperature range below boiling (note: this is a customary usage in the industry; please refer to the database for the ionic type). Additionally, it has low foaming properties, performing excellently in processes where foam control is required.

The following are detailed data for various technical parameter indicators of this product, all sourced from actual measurements and specifications in the Guoli Chemical product database, providing precise reference for formulators and R&D personnel.

Technical Parameters

Parameter CategoryParameter ItemTechnical Indicator / Reference Value
Product IdentificationChemical NameTriethanolamine Monooleate
AliasEmulsifier FM, Triethanolamine Oleate Soap, Oleic Acid Triethanolamine Salt
CAS Number2717-15-9
Molecular FormulaC24H49NO5
Molecular Weight431.6
Appearance and PropertiesAppearanceLight yellow to brownish-yellow oily liquid
SolubilityReadily soluble in water
HygroscopicityHygroscopic
Surface Activity and FunctionIonic TypeAnionic
HLB Value12
Cloud Point>100 °C
Foam PropertyLow foaming
PenetrabilityGeneral
Physicochemical PropertiesActive Content≥99 %
pH Value (1% Aqueous Solution)5.0 ~ 9.0
pH Value (5% Aqueous Solution)5.0 ~ 9.0
Density (20°C)0.95 ~ 1.05 g/cm³
Kinematic Viscosity (40°C)200 ~ 500 mm²/s
Freezing Point / Melting Point< -10 °C
Refractive Index (nD)1.470 ~ 1.480
Flash Point> 150 °C
Surface Tension30 ~ 35 mN/m
Critical Micelle Concentration (CMC)0.01 ~ 0.1 %
Water Content≤ 1 %
Alkali StabilityGood
Iodine Value70 ~ 90 gI2/100g
UnsaturationApproximately 2.4
Nitrogen/Chemical IndicatorsAcid Value≤ 5 mgKOH/g
Saponification Value130 ~ 140 mgKOH/g
Hydroxyl Value380 ~ 400 mgKOH/g
Amine Value≤ 10 mgKOH/g
Free Amine (Tertiary Amine Content)≤ 1 %
Free Alcohol≤ 1 %
Free Phosphoric AcidNone
Chemical StabilityStable under general conditions
Restricted SubstancesHeavy Metals (as Pb)≤ 10 ppm
Arsenic (As)≤ 2 ppm
Packaging SpecificationsStandard Packaging50kg plastic drum
Medium Packaging200kg plastic drum
Large Packaging1000kg IBC tote

Application Recommendations

Based on the above parameters, Emulsifier FM exhibits superior performance in high oil phase emulsion systems. Its HLB value of approximately 12 and cloud point >100°C make it highly suitable for formulating highly concentrated metalworking fluid emulsions, pesticide emulsifiable concentrates, and microemulsions, allowing for easy preparation of uniform emulsions without the need for additional co-emulsifiers. Additionally, its water content of <1% and high viscosity of 200~500 suggest that it can provide excellent thickening and emollient effects in personal care creams and textile oils. With a hydroxyl value of 380~400, it can be used in emulsion polymerization for grafting modification or as an end-capping agent for special polyurethanes.

Precautions

  • Safety Protection (Skin Sensitization): The GHS classification of this product is Skin Sensitizer Category 1 (H317 warning: may cause an allergic skin reaction). During operation, nitrile or other impermeable gloves must be worn at all times to avoid direct contact. Contaminated work clothes should be promptly changed and washed.
  • Storage Conditions: It is recommended to strictly control the storage temperature within the range of 5~35°C. Temperatures below -10°C may cause freezing, and above 35°C may accelerate deterioration. The container must be kept sealed, stored in a cool, dry place, and kept away from acids and strong oxidizers.
  • Pre-Use Treatment: In low-temperature environments, the product's viscosity increases significantly (up to 500mm²/s). It is recommended to warm the product in a 20~30°C heated room before use to facilitate pouring and weighing; do not use open flames or direct steam heating for prolonged periods.