Монооктадеканоат сахарозы

Description

Sucrose monooctadecanoate (sucrose monostearate, sucrose stearate) is a nonionic surfactant ester in which one of the hydroxyl groups of sucrose is esterified with stearic acid. The hydrophilic part of the molecule is formed by a disaccharide residue with many free hydroxyls, while the lipophilic part is formed by the C18 hydrocarbon chain. Both initial components are renewable and food grade, the product is biodegradable, odorless and tasteless. In the food industry, sucrose esters of fatty acids are registered as additive E473.

Identification

• CAS No.: 25168-73-4 (the list of synonyms also includes 135413-00-2)
• Chemical formula: C30H56O12
• Molecular weight: 608.76; exact weight: 608.377197
• EU number: 246-705-9
• NSC Number: 192745
• Class: nonionic surfactants
• Nutritional index: E473 (sucrose esters of fatty acids)
• Brands: Ryoto Sugar Ester S 1670, Ryoto MO-C 18, S 1670, Sucrapan S, Surfhope SE Pharma J-1809

Physico-chemical properties

• Appearance: White to off-white powder
• Density: 1.2 ± 0.1 g/cm³
• Melting point: 67–71 °C
• Boiling point: 763.2 ± 60.0 °C at 760 mm Hg. Art. (calculated value)
• Flash point: 235.6 ± 26.4 °C
• Refractive index: 1.546
• Solubility: soluble in water and ethanol at 75 °C
• PSA Specs: 196
• XLogP3: 5.91

The combination of a high polar surface (196) with high lipophilicity (XLogP3 5.91) is a direct reflection of the diphilic structure: sucrose “head” and stearic “tail”. Dissolution in water occurs when heated to 75 °C; in cold water the product disperses slowly, so in formulations it is introduced into the hot phase.

HLB indicator and brands

The hydrophilic-lipophilic balance of sucrose esters is determined by the degree of esterification: the greater the proportion of monoester, the more hydrophilic the product. The range of HLB values ​​for sugar esters of fatty acids in general is from 1 to 16, for hydrophilic brands with a high monoester content - 10–16. In the Ryoto labeling, the letter indicates the fatty acid (S - stearic), and the first two digits correspond to the HLB value: the S-1670 brand is hydrophilic, its HLB is 16.

Scope of application

• Food industry (E473): emulsifier and stabilizer in dairy products, ice cream, cream, beverages, sauces, confectionery and chocolate, bakery products, jellies, noodles, meat and fish pastes. Improves texture, stabilizes emulsions, prevents separation.
• Cosmetics and personal hygiene: emulsifier for creams and lotions, solubilizer for essential oils, mild cleansing surfactant.
• Pharmaceuticals: emulsifier and solubilizer in liquid forms, lubricating and plasticizing additive for tabletting; Surfhope SE Pharma J-1809 brand is produced for pharmaceutical purposes.
• Technical applications: dispersant, detergent, plasticizer.

Safety Information

• Hazard Statements: H400 - Very toxic to aquatic life
• Precautionary statements: P273 - Avoid release to the environment; P391 - collect spilled or scattered materials; P501 - Dispose of contents and containers in accordance with local requirements

Storage and handling

The powder is hygroscopic and prone to clumping, so the container is kept tightly closed, the room is dry and ventilated, without sudden changes in temperature. Storage near heating sources is not allowed: melting begins at 67 °C. The only classified hazard relates to the aquatic environment - discharge of the product, flushes and rinsing waters into sewers and water bodies is excluded, spilled material is collected mechanically, waste and containers are transferred in accordance with local regulations. Safety equipment when hanging is standard: gloves, goggles, local exhaust to limit dust.