CALCIUM N-DODECYLBENZENESULFONATE
Calcium Dodecylbenzene Sulfonate
CAS: 26264-06-2
Molecular Formula: C36H58CaO6S2
CALCIUM N-DODECYLBENZENESULFONATE - Names and Identifiers
| Name | Calcium Dodecylbenzene Sulfonate |
| Synonyms | 1371a Calcium salt EMULSIFIER 1371 A calciumalkylbenzenesulfonate calciumdodecylbenzensulfonate calciumalkylaromaticsulfonate Calcium Dodecylbenzene Sulfonate CALCIUM DODECYLBENZENE SULFONATE Calcium Dodecyl Benzene Sulfonate CALCIUM N-DODECYLBENZENESULFONATE calciumbis(dodecylbenzenesulfonate) calcium bis(2-dodecylbenzenesulfonate) Dodecylbenzenesulfonic Acid Calcium Salt |
| CAS | 26264-06-2 |
| EINECS | 247-557-8 |
| InChI | InChI=1/2C18H30O3S.Ca/c2*1-2-3-4-5-6-7-8-9-10-11-14-17-15-12-13-16-18(17)22(19,20)21;/h2*12-13,15-16H,2-11,14H2,1H3,(H,19,20,21);/q;;+2/p-2 |
CALCIUM N-DODECYLBENZENESULFONATE - Physico-chemical Properties
| Molecular Formula | C36H58CaO6S2 |
| Molar Mass | 691.05 |
| Density | 1.04[at 20℃] |
| Boling Point | 843.05℃[at 101 325 Pa] |
| Water Solubility | 852.7μg/L at 25℃ |
| Vapor Presure | 0Pa at 25℃ |
| pKa | 0.7[at 20 ℃] |
| Physical and Chemical Properties | Trait solid. solubility slightly soluble in water. |
| Use | Used in dye, paint, textile, printing and dyeing and other industries |
CALCIUM N-DODECYLBENZENESULFONATE - Reference Information
| LogP | 4.77 at 25℃ |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| application | mainly used for preparing mixed pesticide emulsifier mainly used for pesticide emulsifier, also used for textile oil, tile cleaning agent, grinding oil agent, cement dispersant, etc. this product is used as a detergent dispersant in diesel oil, engine oil, pressurized diesel oil and engine oil. This product is the main component of mixed emulsifier for compounding organochlorine, organophosphorus, herbicide and other pesticide emulsions. It can be used as an anionic surfactant and also as a pesticide emulsifier. Mixed with nonionic surfactants to prepare mixed pesticide emulsifiers, which are widely used to prepare organophosphorus and organochlorine pesticide emulsifiers. This product is toxic and irritating to the skin. used in dye, paint, textile, printing and dyeing industries |
| production method | the molecular sieve dewaxing oil reacts with chlorine to form chloroalkane, which is then condensed with benzene to form dodecyl benzene. alkylbenzene is sulfonated with fuming sulfuric acid to obtain dodecyl benzene sulfonic acid and then neutralized with lime to obtain this product. Kg/ton molecular sieve dewaxing oil 560 pure benzene (95%) 350 fuming sulfuric acid (SO 320%) 550 lime 200 the preparation process of this product includes benzene alkylation, alkylation product sulfonation and neutralization. 432kg of this was put into a reaction kettle, and 1.06kg of aluminum trichloride and 168kg of dodecene were added under stirring. Dodecene is added by dropping method. After dropping, the temperature is increased to 60~70 ℃, and the temperature is kept for 1.6h for shrinkage reaction. After the reaction, the mud feet are removed and neutralized. Then debenzene. After benzene is removed, the distillation is reduced to 9.8kPa, and the fraction with refractive index of 1.478~1.495 is cut into refined alkylbenzene. Put the benzene into the sulfonation kettle, and add fuming sulfuric acid dropwise at about 20 ℃. After addition, the reaction was carried out at 25~30 ℃ for 1h. After sulfonation, add water and add fuming sulfuric acid dropwise at about 50 ℃. After addition, the reaction was carried out at 25~30 ℃ for 1h. After sulfonation, add water and stand at about 50 ℃ for 6 hours to separate waste acid. Finally, it is neutralized with lime water ethanol solution until the pH value is 7~8. The neutralization liquid uses a plate and frame filter to remove the waste residue, the filtrate is concentrated, and the ethanol is distilled, and the high boiling point is the product. The heavy alkylbenzene, a by-product of the alkylbenzene plant, is neutralized by sulfonation. The double membrane sulfonation method is as follows. First, the metered SO3 gas and dry air are mixed in the mixer until the SO2 concentration is 4% (volume), and then the mixed gas is introduced into the head annular space of the double membrane reactor, and the introduction speed is controlled at 20-90m/s. In addition, the heavy alkylbenzene is preheated to 30~35 ℃ and fed into the reactor head distributor with a pump. The molar ratio of heavy alkylbenzene to sulfur trioxide is 1: 1.05. The flow rate of the sulfur trioxide-air mixture in the reaction zone is about 26 m/s. The reaction temperature is 40~45 ℃. The resulting alkylbenzene sulfonic acid is driven into the aging device with an acid-resistant pump. After reacting in the aging device for 15min, drive into the water dispenser. Add water equivalent to 0.5% to 1% of sulfonic acid. To decompose the by-product sulfonic anhydride and terminate the aging process. The hydrolyzed reaction solution is a benzenesulfonic acid, which is pumped into a storage tank for later use. Add a certain amount of lime water to the neutralization pot. Under stirring, alkylbenzene sulfonic acid was added dropwise at about 30 ℃ to a pH value of 7~8. After dripping, stir for 1h and discharge. Concentrate, crystallize, filter and dry to obtain the finished product. |
| category | toxic substances |
| toxicity classification | poisoning |
| acute toxicity | oral-rat LD50: 4000 mg/kg; Oral-mouse LD50: 3680 mg/kg |
| flammability hazard characteristics | thermal decomposition discharges toxic sulfur oxide smoke |
| storage and transportation characteristics | warehouse ventilation and low temperature drying |
| fire extinguishing agent | water, dry powder, carbon dioxide, foam |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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