| Customization: | Available |
|---|---|
| CAS No.: | 57-11-4 |
| Formula: | C18h36o2 |
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| Items | index | ||||||
| Type 1840 | Type 1850 | Type 1865 | Rubber and plastic grade | ||||
| first grade | qualified product | first grade | qualified product | first grade | qualified product | ||
| C18content/% | 38~42 | 35~45 | 48~55 | 46~58 | 62~68 | 60~70 | |
| Saponification value (in KOH)/(mg/g) | 206~212 | 203~215 | 206~211 | 203~212 | 202~210 | 200~210 | 190~225 |
| Acid value (in KOH)/(mg/g) | 205~211 | 202~214 | 205~210 | 202~211 | 201~209 | 200~209 | 190~224 |
| Iodine value (as I2)/(g/100 g) ≤ | 1.0 | 2.0 | 1.0 | 2.0 | 1.0 | 2.0 | 8.0 |
| colour and lustre/Hazen ≤ | 100 | 400 | 100 | 400 | 100 | 400 | 400 |
| freezing point/ºC | 53.0~57.0 | 54.0~58.0 | 57.0~62.0 | ≥52.0 | |||
| moisture/% ≤ | 0.1 | 0.2 | |||||
| C18 content refers to the content of octadecanoic acid. The sample was prepared into a 15% anhydrous ethanol solution. |
|||||||
| item | Finger mark |
| Acid value (in KOH)/(mg/g) | 196-211 |
| Iodine value (measured in I)/(g/100 g) ≤ | 7.0 |
| Saponification value (in KOH)/(mg/g) | 197-212 |
| moisture ≤ | 0.2 |
| ignition residue ≤ | 0.1 |
| unsaponifiable matter ≤ | 1.5 |
| Crystallization point /ºC | 54,5--69 |
| lead(Pb)/(mg/kg) ≤ | 2.0 |
| =2g sample, the burning temperature is 675 ºC±25 ºC. | |
Stearic acid, octadecanoic acid, molecular formula C18H36O2, produced by the hydrolysis of oil, mainly used in the production of stearate. Dissolve in 21ml ethanol, 5ml benzene, 2ml chloroform or 6ml carbon tetrachloride per gram.
Widely used in cosmetics, plastic cold-resistant plasticizer, release agent, stabilizer, surfactant, rubber vulcanization accelerator, water repellent, polish, metal soap, metal mineral flotation agent, softener, medicine and other organic chemicals. It can also be used as a solvent for oil soluble pigments, a smoothing agent for crayons, a polishing agent for waxed paper, and an emulsifier for glycerol stearate.
In the food industry as lubricants, defoamer and food additives stearate glycerin, stearate sorbitan anhydride ester, sucrose ester and other raw materials. Used as auxiliary raw materials and raw materials for daily chemical products.
Stearic acid is widely used in the manufacture of PVC plastic pipes, plates, profiles and films. It is a PVC heat stabilizer with good lubricity and good light and heat stability.
Stearic acid plays an important role in the synthesis and processing of rubber. Stearic acid is a vulcanizing active agent widely used in natural gums, synthetic rubber and latex, and can also be used as a plasticizer and softener. In the production of synthetic rubber process need to add stearic acid as emulsifier, in the manufacture of foam rubber, stearic acid can be used as a foaming agent, stearic acid can also be used as rubber products release agent.
Stearic acid is used to emulsify two types of skin care products, such as cream and cold cream, so that it becomes a stable white paste. Stearic acid is also the main raw material for making almond honey and milk. Stearic acid soap esters are more widely used in cosmetics industry.
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catalyst,Functional additive,Inorganic raw material,additive,Pigment dye
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