Name | Lead (II) stearate |
Synonyms | LSL Lead stearate Haro chem P28G Lead distearate lead octadecanoate Lead (II) stearate lead distearate, pure Lead(II) octadecanoate Lead(II)n-octadecanoate lead(2+) dioctadecanoate Leadstearateminwhitepowder Stearic acid lead(2+) salt Octadecanoicacid,lead(2+)salt Octadecanoic acid, lead(2+) salt |
CAS | 1072-35-1 |
EINECS | 214-005-2 |
InChI | InChI=1/2C18H36O2.Pb.2H/c2*1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;;;/h2*2-17H2,1H3,(H,19,20);;;/q;;+2;;/p-2/r2C18H36O2.H2Pb/c2*1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;/h2*2-17H2,1H3,(H,19,20);1H2/q;;+2/p-2 |
Molecular Formula | C36H70O4Pb |
Molar Mass | 774.14 |
Density | 1.323 |
Melting Point | 105~112℃ |
Boling Point | 359.4℃ at 760 mmHg |
Water Solubility | Soluble in hot alcohol. Slightly soluble in warm water. |
Appearance | Powder |
Storage Condition | Inert atmosphere,Room Temperature |
MDL | MFCD00050719 |
Physical and Chemical Properties | Properties: white powder. Flammable. Density 1.323g/cm3. The melting point was 105-112 °c. Soluble in hot ethanol and ether, insoluble in water. In the case of strong acid decomposition of stearic acid and the corresponding lead salt. |
Use | It is mainly used as a stabilizer for polyvinyl chloride, a thickener for lubricating oil, a leveling agent for paint, etc |
Risk Codes | R20/22 - Harmful by inhalation and if swallowed. R33 - Danger of cumulative effects R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R61 - May cause harm to the unborn child R62 - Possible risk of impaired fertility |
Safety Description | S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S53 - Avoid exposure - obtain special instructions before use. |
UN IDs | 2291 |
TSCA | Yes |
Hazard Class | 6.1 |
Raw Materials | lead acetate Lead Sodium hydroxide Nitric acid Lead(II) nitrate Hydrochloric acid Stearic acid |
white to yellow powder, relative density of 11 323 (25 degrees C), melting point of 105~112 degrees C, with heat resistance and smooth feeling. Insoluble in water, soluble in hot ethanol, ether, soluble in alkali, kerosene, turpentine. In the case of strong acid decomposition into stearic acid and the corresponding lead salt.
after adding stearic acid to the reactor to melt, sodium hydroxide solution is added, and the reaction is stirred to generate sodium stearate saponification solution, then dilute lead acetate solution is added, and the reaction is continued to stir, discharge, dehydration, drying, grinding, the lead stearate powder was obtained by sieving.
It is used as a lubricant remover and a defoaming agent for drilling fluids in oilfield chemicals. It is also used as paint anti-settling agent, Fabric Water-releasing agent, lubricating oil thickening agent, plastic heat-resistant stabilizer, etc., and as a stabilizer for opaque soft and hard polyvinyl chloride products.
there is a certain degree of toxicity, pay attention to avoid direct contact with the skin.
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
use | used as translucent heat stabilizer for polyvinyl chloride plastics, lubricating oil thickening agent used as paint drier used as polyvinyl chloride The heat stabilizer, lubricant and lubricant, the thermal stability capacity is larger than that of calcium stearate, and it has better light stability. It is mainly used for various opaque hard soft-holding polyvinyl chloride products. It is suitable for wire and cable materials and can endow the products with excellent electrical properties. The general dosage is 0.5-2 parts. Used as a stabilizer for polyvinyl chloride plastics Mainly used as a stabilizer for polyvinyl chloride, a thickening agent for lubricating oil, a leveling agent for paints, etc. |
production method | metathesis method is used. First, dissolve stearic acid in 20 times the weight of hot water, and add caustic soda with a concentration of 10 waves at about 90°C to generate dilute soap. Then, lead nitrate solution was added at the same temperature for metathesis. The stearic acid precipitate produced is washed with water, centrifuged and dehydrated, and then dried at about 100 ℃ to obtain the finished product. Raw material consumption quota: stearic acid (acid value 198-205, iodine value |