TEL
+ 86-21-6420 0566
Номер CAS 2809-21-4
Содержание 60%
Упаковка 250кг / барабан
Имена и идентификаторы
| Имя | 1-гидроксиэтилиден-1,1-дифосфоновая кислота |
| Синонимы | ОЭДФ HEDPA Этидроновая кислота 1-Гидроксиэтан-1,1-дифосфонур Гидроксиэтилиденди(фосфоновая кислота) 1-гидроксиэтилидендифосфоновая кислота 1-Гидроксиэтан-1,1-дифосфоновая кислота (1-Гидроксиэтилиден)бифосфоновая кислота Гидроксиэтилиден-1,1-дифосфоновая кислота 1-ГИДРОКСИЭТИЛИДЕНДИ (ФОСФОНОВАЯ КИСЛОТА) 1-гидроксиэтилен-1,1-дифосфоновая кислота 1-гидроксиэтилиден-1,1-дифосфоновая кислота Гидроксиэтилиден-1,1-дифосфоновая кислота 1-гидроксиэтилиден-1,1-дифосфоновая кислота (1-гидроксиэтан-1,1-диил)бис(фосфонат) Гидроксиэтилидендифосфоновая кислота (ГЭДФ) 1-Гидроксиэтилиден-1,1-бис-(фосфоновая кислота) 1-ГИДРОКСИЭТИЛИДЕН-1,1-ДИФОСФОНОВАЯ КИСЛОТА HEDP 1-Гидроксиэтилиден-1,1-дифосфоновая кислота (HEDP) динатрий (1-гидроксиэтан-1,1-диил)бис[водород (фосфонат)] |
| CAS | 2809-21-4 |
| EINECS | 220-552-8 |
| InChI | InChI=1/C2H8O7P2/c1-2(3,10(4,5)6)11(7,8)9/h3H,1H3,(H2,4,5,6)(H2,7,8,9)/p-4 |
| InChIKey | DBVJJBKOTRCVKF-UHFFFAOYSA-N |
2809-21-4 – Физико-химические свойства
| Молекулярная формула | C2H8O7P2 |
| Молярная масса | 206.03 |
| Плотность | 1.45 (60% вод.) |
| Температура плавления | 198 ~ 199 ℃ |
| Болинг Точка | 578.8 ± 60.0 ° C (прогноз) |
| Точка возгорания | 303.8 ° C |
| Растворимость воды | Растворим в воде. |
| Давление пара | 0 Па при 25 ℃ |
| Внешний вид | порошок |
| Цвет | белый |
| Merck | 14,3863 |
| BRN | 1789291 |
| рКа | 1.35, 2.87, 7.03, 11.3 (в 25 ℃) |
| PH | pH (1.7→100, 25℃) : 1.3～1.8 |
| Условия хранения | Запечатанный в сухом, комнатной температуре |
| Стабильность | Стабильная. Несовместим с сильными окислителями. |
| MDL | MFCD00070585 |
| Физические и химические свойства | Density 1.45 (60% aq.) |
| Используйте | Boiler and heat exchanger scale inhibitors and corrosion inhibitors, non-cyanide electroplating complexing agent, soap chelating agent, metal and non-metallic cleaning agent |
2809-21-4 – Риск и безопасность
| Коды рисков | R37/38 – Раздражает дыхательные пути и кожу. R41 – Опасность серьезного повреждения глаз. R22 – Вредно при проглатывании. |
| Описание безопасности | S26 – При попадании в глаза немедленно промыть большим количеством воды и обратиться к врачу. S39 – Используйте средства защиты глаз/лица. |
| Идентификаторы ООН | UN 3265 |
| WGK Германия | 2 |
| RTECS | SZ8562100 |
| F-КОДЫ МАРКИ FLUKA | 10 |
| ЗКТВ | Да |
| Код ТН ВЭД | 29319090 |
| Класс опасности | 8 |
| Группа упаковки | II |
| Токсичность | LD50 перорально у мышей: 1800 мг/кг |
2809-21-4 – Добывающая и перерабатывающая промышленность
| сырье | Уксусная кислота Уксусная кислота Фосфор трихлорид |
Справочная информация
| LogP | -3.5 |
| токсичность | the product is low in toxicity, and LD50 injected subcutaneously into mice is 486.4 mg/kg. |
| Подготовка | Hydroxyethylenediphosphonic acid can be obtained by the reaction of acetyl chloride and phosphorous acid. |
| использование | this product is the main material for cyanide-free electroplating. It is prepared into a cyanide-free copper plating solution with good bonding force of direct copper plating on sodium iron. The coating is smooth and good in color. The general dosage 60% content is 100~120 ml/l. The dosage of copper sulfate is 15~20g/L. In addition, before electroplating, the plated parts are immersed in 1% ~ 2% solution of this product to turn the plated parts into activated state, and then electroplating can improve the effect. Hydroxyethylenediphosphonic acid (HEDP) is a new type of chlorine-free electroplating complexing agent, which is used as the main agent for water quality stability in the circulating cooling water system and plays a role in corrosion and scale inhibition. This product is one of the organic multi-phosphonic acid-free water tablets. There are also some varieties of such products produced in China, such as aminomethylene phosphonic acid (ATMP):[CH2PO(OH)2]3N and ethylenediamine tetramethylene phosphate (EDTMP) and so on. Organic polyphosphonic acid is a kind of water treatment agent developed in the late 1960s and confirmed around the 1970s. The emergence of such treatment agents has taken a big step forward in water tablet technology. Compared with machine polyphosphate, organic multi-phosphonic acid has the characteristics of chemical stability of good medicine aunt, not easy to hydrolyze, high temperature tolerance and small dosage, and has the characteristics of mitigating scale corrosion. It is a kind of cathode corrosion inhibitor and a kind of non-chemical equivalent scale inhibitor. When used in combination with other water treatment agents, it shows ideal synergistic effect. It has excellent chelation energy for many metal ions such as calcium, magnesium, copper, zinc, etc., and even has good deactivation effect on inorganic salts of these metals such as CaSO4, CaCO3, MgSiO3, etc., so it is widely used in water treatment technology. Phosphorylation reagent, used for protected serine and pyranose. |
| Способ производства | After mixing phosphorus trichloride and glacial acetic acid, heating and distillation to obtain acetyl chloride (see 00510), and then react with phosphorous acid to obtain. Commercial products are viscous liquids with water dilution as the content 50%. Each ton of product consumes 931kg of phosphorus trichloride (95%) and 591kg of glacial acetic acid. Through the nucleophilic addition of diethylenetriamine and formaldehyde, the addition product is esterified with the hydrolysis product of phosphorus trichloride, and the product is neutralized. See EDTMP for details. In industry, glacial acetic acid and phosphoryl trichloride futures are usually used, and then the acylation product and phosphorus trichloride hydrolysis product condensation method. Add metered water and glacial acetic acid into the reaction kettle and stir evenly. Phosphorus trichloride was added dropwise under cooling, and the reaction temperature was controlled at 40~80 ℃. The reaction by-product hydrogen chloride gas is condensed and sent to the absorption tower to recover hydrochloric acid. Spilled acetyl chloride and acetic acid are condensed and returned to the reactor. After dropping phosphorus trichloride, the temperature is raised to 100~130 ℃ and refluxed for 4~5h. After the reaction is over, it is hydrolyzed with water vapor to evaporate the residual acetic acid and low boiling point. Products. |
Фабрика и отгрузка
