无水柠檬酸

无水柠檬酸（CAS 79586-22-4）：分子式 C6H8O7、分子量 192.12。

产品概览

应用领域

登记用途：Uses: CIR ingredient: Citric Acid、A Compound from citrus fruits that is an intermediate in the tricarboxylic acid (Krebs) cycle. It is used as an acidifying agent in foods、beverages、and pharmaceuticals. Citrate chelates calcium ions and prevents blood clotting. It is also used as an anticoagulant for stored whole blood and red cells and also for blood specimens. (Dorland、28th ed) [ChemIDplus]、For citric acid (USEPA、OPP Pesticide Code: 21801) ACTIVE products with label matches.、SRP: Registered for use in the U.S. but approved pesticide uses may change periodically and so federal、state and local authorities must be consulted for currently approved uses.、Active ingredient in products registered for residential and commercial use as disinfectants、sanitizers and fungicides ... products are used to kill odor-causing bacteria、mildew、pathogenic fungi、certain bacteria and some viruses. Citric acid products are used in bathrooms and in、on dairy and food processing equipment.、Acidulant in beverages、confectionary、effervescent salts、in pharmaceutical syrups、elixirs、in effervescent powders and tablets、to adjust pH of foods and as a synergistic antioxidant in processing cheese. Used in beverages、jellies、jams、preserves and candy to provide tartness. In the manufacture of alkyd resins、in esterified form as plasticizer、foam inhibitor. In the manufacture of citric acid salts. As a sequestering agent to remove trace metals. As mordant to brighten colors、in special inks、in electroplating、in analytical chemistry for determining citrate-soluble P2O5、as reagent for albumin、mucin、glucose、bile pigments.、Anticoagulent、generally in solution with glucose、to prevent clotting of blood intended for transfusion、For more Uses (Complete) data for CITRIC ACID (19 total)、please visit the HSDB record page.、Use (kg、approx.) in Germany (2009): >100000、Consumption (g per capita、approx.) in Germany (2009): 1.22、Calculated removal (%): 92.1、Use Classification: EPA Safer Chemical Functional Use Classes -> Antimicrobial Actives、Chelating Agents、Processing Aids and Additives、Safer Chemical Classes -> Green circle - The chemical has been verified to be of low concern、Animal Drugs -> FDA Approved Animal Drug Products (Green Book) -> Active Ingredients、Fragrance Ingredients、Flavouring Agent -> FLAVOURING_AGENTFood Additives -> ACID、ANTIOXIDANT_SYNERGIST、SEQUESTRANT、SYNERGIST -> JECFA Functional Classes、Flavoring Agents -> JECFA Flavorings Index、Cosmetics -> Chelating、Buffering、Industry Uses: Flavoring and nutrient、Other、Binder、Monomers、Processing aids not otherwise specified、Antioxidant、pH regulating agent、Cleaning agent、Soil amendments (fertilizers)、Catalyst、Filler、Not Known or Reasonably Ascertainable、Preservative、Intermediate、Surface modifier、Consumer Uses: Cleaning agent、Corrosion inhibitor、Anti-stain agent、Chelating agent、Anti-scaling agent、Flavoring and nutrient、Household Products: Information on 2599 consumer products that contain Citric acid in the following categories is provided:、• Auto Products、• Commercial、Institutional、• Home Maintenance、• Inside the Home、• Landscaping、Yard、• Personal Care、• Pesticides、• Pet Care、Methods of Manufacturing: In surface fermentation、Aspergillus niger is grown on a liquid substrate in pans stacked vertically in a chamber. The chamber and pans are sterilized either before or after introduction of the substrate. ... The substrate for the fermentation is a carbohydrate、usually molasses or a sugar、such as raw beet、refined beet、or cane sugars、or a syrup. ... Certain inorganic nutrients、such as ammonium nitrate、potassium phosphate、magnesium sulfate、zinc sulfate、and potassium ferrocyanide、are added. The pH is adjusted to between 3 and 7、depending on the carbohydrate source. Sterilization may be batchwise or continuous、the latter uses less energy and is usually faster. After sterilization、the temperature is adjusted as required. The surface of the sterile substrate in the pans is inoculated with A. niger spores、which germinate and cover the surface of the liquid with a mat of mold. After two to three days the surface is completely covered and citric acid production begins、continuing at almost a constant rate until 80-90% of the sugar is consumed. Fermentation then continues more slowly for an additional six to ten days. The theoretical yield from 100 kg of sucrose is 123 kg of citric acid monohydrate or 112 kg of anhydrous acid. However、the A. niger uses some sugar for growth and respiration、and the actual yield varies between 57 and 77% of theoretical、depending on such factors as substrate purity、the particular strain of organism、and the control of fermentation.、Submerged fermentation ... takes place in large fermentation tanks. This method is used more frequently because labor costs are lower with large tanks than with small pans、equipment costs are also lower. The fermentation vessel can be short and wide or tall and narrow、and equipped with mixing devices、such as top-entering or side-entering agitators of the turbine or propeller type. Agitation can be increased by use of a draft tube、a recirculation loop、or a nozzle through which air and recirculated substrate is pumped. Spargers located at the bottom of the vessel or under the stirrer supply air、which may be enriched with oxygen. Oxygen is usually recovered from the exhaust gas. The air is supplied by a compressor and passes through a sterile filter、if necessary、the air is cooled. Because the process is exothermic、the vessel must be equipped with heat-exchange surfaces、which can be the outside walls or internal coils. Ports are provided for introducing substrate、inoculum、and steam or other sterilizing agents、sampling and exhaust ports are also provid。

技术档案

这个产品是什么

无水柠檬酸 是一种化工化合物，登记 CAS 号为 79586-22-4，分子式 C6H8O7（分子量 192.12）。

识别信息

登记 CAS 号：79586-22-4

其分子式 C6H8O7 由 6 个碳、8 个氢、7 个氧 组成。

别名/同义词：无水柠檬酸 · Citric Acid, anhydrous

常见问题

PubChem 公开数据

相关产品