stearates
ammonium stearate, pure
CAS: 1002-89-7
Molecular Formula: C18H39NO2
stearates - Names and Identifiers
| Name | ammonium stearate, pure |
| Synonyms | AI3-03102 stearates Ammonium stearate stearated'ammonium ammoniumoctadecanoate ammoniumstearate,pure azanium,octadecanoate Ammonium stearate, pure ammonium stearate, pure stearicacid,ammoniumsalt Ammonium Stearate, Paste Stearic acid, ammonium salt Octadecanoicacid,ammoniumsalt Octadecanoic acid, ammonium salt |
| CAS | 1002-89-7 |
| EINECS | 213-695-2 |
| InChI | InChI=1/C18H36O2.H3N/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;/h2-17H2,1H3,(H,19,20);1H3 |
stearates - Physico-chemical Properties
| Molecular Formula | C18H39NO2 |
| Molar Mass | 301.51 |
| Density | 0.8900 |
| Melting Point | 21-24℃ |
| Boling Point | 442.62°C (rough estimate) |
| Flash Point | 162.4°C |
| Water Solubility | soluble H2O [MER06]; soluble hot toluene [HAW93] |
| Vapor Presure | 8.58E-06mmHg at 25°C |
| Appearance | yellow-white powder |
| Storage Condition | Room Temprature |
| Stability | Incompatible with strong oxidizing agents. |
| Refractive Index | 1.5000 (estimate) |
| Use | Can be used as emulsifier, dispersant, wetting agent, anti-wetting agent, etc |
stearates - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
stearates - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| overview | ammonium stearate is dispersed in hot water, soluble in hot toluene, slightly soluble in ethanol and hot butyl acetate. Decompose before heating to boiling (110 ℃). It reacts with strong acid to produce stearic acid and the corresponding ammonium salt. It is made by the action of molten stearic acid and ammonium hydroxide. Used as a dispersant, emulsifier and thickener, and can also be used as a waterproof component for concrete and cement. |
| preparation | (1) add the formula amount of stearic acid, sodium dodecyl sulfate and water in sequence in the reaction container, adjust the temperature to 10-25 ℃, after stirring evenly, add ammonia water, then adjust the stirring speed to 1200-1600 r/min, and stir until the stearic acid is completely melted and becomes liquid ammonium stearate with fluidity; (2) the ammonium stearate liquid prepared in step (2) is sucked into an emulsifying tank, and emulsified under the condition that the rotating speed of the emulsifying machine is 2600-3200 r/min until the color of the liquid becomes silvery-white metallic luster and the viscosity is ≤ 350cps, then standing for 1-2 hours, and then filtering to obtain ammonium stearate emulsion. |
| use | can be used as emulsifier, dispersant, wetting agent, anti-wetting agent, etc. |
| category | toxic substances |
| toxicity classification | poisoning |
| flammability hazard characteristics | flammability; heating produces toxic nitrogen oxides and ammonia smoke |
| storage and transportation characteristics | warehouse ventilation and low temperature drying |
| fire extinguishing agent | dry powder, foam, sand, carbon dioxide, mist water |
| occupational standard | TWA 10 mg/m3 |
Last Update：2024-04-09 02:00:05
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