Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
1. Basic Info
Name: Ricinoleic acid
Alias: 12-Hydroxy-9-octadecenoic acid
CAS No.: 61789-44-4
Molecular Formula: C18H34O3
Molecular Weight: 298.46
2. Physical & Chemical Properties
Physical Properties
- Appearance: Colorless to pale yellow viscous oily liquid
- Odor: Mild fatty acid peculiar odor
- Solubility: Insoluble in water; miscible with ethanol, ether, chloroform, vegetable oils
- Density (20℃): 0.940–0.950 g/cm3
- Melting Point: 4–5 ℃
- Boiling Point: Decomposes above 240 ℃
- Refractive Index nD2?: 1.468–1.472
- Closed-cup Flash Point: 240 ℃
- Hygroscopy: Non-hygroscopic
- Optical activity: Contains chiral carbon at the 12-position, with optical rotation
Chemical Properties
- Molecular structure: Long-chain unsaturated fatty acid with double bond at C9 and hydroxyl group at C12
- Double bond reactivity: Undergoes addition, oxidation, polymerization; exposed to air easy to oxidize and darken
- Hydroxyl reactivity: Esterification, sulfation, dehydration reaction available; raw material for sulfonated castor oil
- Carboxyl activity: Reacts with alkali to form ricinoleate salts; esterifies with alcohols to produce ricinoleate esters
- Thermal stability: Stable below 200℃; high temperature dehydration generates conjugated linoleic acid derivatives
- Acid-base stability: Stable in neutral/weak alkali; concentrated strong acid accelerates dehydration
- Surfactant precursor: Sulfonation modification produces anionic surfactants with excellent emulsifying performance
- Compatibility: Compatible with most oils, solvents, resin monomers; incompatible with strong oxidants, concentrated strong acid
3. Main Application Fields
1. Surfactant Raw Material (Core Application)
Synthetic raw material for sulfonated castor oil (Turkey red oil), textile leveling agent, leather fatliquoring agent, industrial emulsifier.
2. Cosmetic & Personal Care Raw Material
Emollient, moisturizing component for cream, lotion, hair care oil; mild skin permeability, improve skin softness.
3. Lubricant & Plasticizer Intermediate
Synthetic ester lubricant base stock; plasticizer for PVC, cellulose resin, improve product low-temperature flexibility.
4. Coating & Ink Additive
Wetting dispersant for water-based coatings and printing ink; enhance pigment dispersion and film leveling property.
5. Organic Synthetic Intermediate
Raw material for producing ricinoleate esters, polymer additives, anti-rust oil, metal processing lubricants.
6. Food & Pharmaceutical Auxiliary
Food-grade emulsifier intermediate; excipient for external ointments, massage liniment base oil.
4. Quality Specification Table
| Test Item | Standard Index |
| CAS Number | 61789-44-4 |
| Molecular Formula | C18H34O3 |
| Molecular Weight | 298.46 |
| Appearance | Pale yellow viscous oily liquid |
| GC Purity | Industrial Grade ≥85%; Refined Grade ≥98% |
| Acid Value | 185–195 mgKOH/g |
| Hydroxyl Value | 145–160 mgKOH/g |
| Iodine Value | 80–90 gI2/100g |
| Moisture Content (KF) | ≤0.15% |
| Chroma (Pt-Co) | ≤150 |
| Heavy Metals (Pb) | Cosmetic/Food Grade ≤10 ppm |
| Bulk Package | 200L iron drum / 1000L IBC tank |
| Storage Condition | Hermetic light-proof cool warehouse ≤25℃; isolate air, oxidants and high temperature heat source |
| Transportation Rule | Ordinary fatty acid liquid, sealed anti-leak packaging |
| Shelf Life | 18 months under intact sealed packaging |
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