142-73-4 - Names and IdentifiersNameIminodiacetic AcidSynonymsIDAaminodiaceticAminodiaceticacid
Courriel : info@standard-groups.com
| Nom | Iminodiacetic Acid |
| Synonymes | IDA aminodiacetic Aminodiaceticacid Aminodiacetic acid Iminodiacetic Acid iminodi-acetic acid Acetic acid, iminodi- 2,2'-iminodiaceticacid 2,2'-iminodiacetic acid 2,2'-iminobis-aceticaci 2,2'-Iminodiacetic acid N-(carboxymethyl)-Glycine Acetic acid, 2,2'-iminobis- |
| CAS | 142-73-4 |
| EINECS | 205-555-4 |
| InChI | InChI=1/C4H7NO4/c6-3(7)1-5-2-4(8)9/h5H,1-2H2,(H,6,7)(H,8,9) |
| Inchikey | NBZBKCUXIYYUSX-UHFFFAOYSA-N |
| Formule moléculaire | C4H7NO4 |
| Masse molaire | 133.1 |
| Densité | 1.5325 (rough estimate) |
| Point de fusion | 243 °C (dec.) (lit.) |
| point Boling | 245.59°C (rough estimate) |
| Point d'éclair | 177.9°C |
| Solubilité dans l'eau | 2.43 g/100 mL (5 ºC) |
| Solubilité | 42g/l |
| pression vapeur | 1.65E-06mmHg at 25°C |
| Apparence | Cristal blanc |
| Couleur | White or yellow |
| Merck | 14,4917 |
| BRN | 878499 |
| Le PKA | 2.98, 9.89(at 25℃) |
| PH | 2.2-2.3 (H2O, 20℃)(saturated solution) |
| Condition de stockage | Conserver à moins de +30°C. |
| Sensible | Facile à absorber l'humidité |
| Indice de réfraction | 1.4540 (estimate) |
| MDL | MFCD00004280 |
| Propriétés physiques et chimiques | Melting point 243°C water-soluble 2.43g/100 mL (5°C) |
| Utilisation | Used in pesticides, rubber and amino carboxylate complexes, a large number of raw materials for glyphosate |
| Symboles de danger | Xi - Irritant |
| Codes de risque | 36/37/38 - Irritant pour les yeux, le système respiratoire et la peau. |
| Description de la sécurité | S26 - En cas de contact avec les yeux, rincer immédiatement avec beaucoup d'eau et consulter un médecin. S36 - porter des vêtements de protection appropriés. S37/39 - Porter des gants appropriés et une protection pour les yeux et le visage |
| Wgk Allemagne | 1 |
| Base de données sur la toxicité des substances chimiques | AI2975000 |
| TSCA | Oui |
| Code SH | 29224995 |
| Toxicité | LD50 orally in Rabbit: > 2000 mg/kg |
| Matières premières | Diethanolamine Diethanolamine Formaldéhyde Formaldéhyde Sodium hydroxide |
| Produits en aval | Glyphosate |
| utilisation | iminodiacetic acid is an intermediate of herbicide glyphosate. Used for pesticides, rubber and aminocarboxylic complexes, used in large quantities as raw materials for glyphosate used as complexing agent, also used in organic synthesis used in the synthesis of glyphosate, and also used as amino acid The synthetic raw material of chelating resin is also an important raw material and intermediate in the rubber and electroplating industries, and is also used as an intermediate of surfactant and complexing agent. Preparation of complexing agents and surfactants, organic synthesis. Bovine liver glutamate dehydrogenase inhibitor |
| Méthode de production | 1. Sodium chloroacetate method is prepared from chloroacetic acid to sodium chloroacetate, and then reacts with hydrazine hydrate to generate hydrazine-holding diacetic acid, and then iminodiacetic acid is prepared under the action of sodium nitrite. (1) Preparation of Sodium Chloroacetate Dissolve chloroacetic acid in water, and slowly add sodium carbonate under stirring until the gas in the solution escapes to obtain sodium chloroacetate. (2) Preparation of hydrazine holding diacetic acid The solution of sodium chloroacetate is added dropwise to the 50% hydrazine hydrate under stirring, and the reaction temperature shall not exceed 25 ℃. After adding, keep the temperature for 10min, and the pH value of the reactant should be between 9-10. Then sodium carbonate was added and the temperature was controlled to be 20-25 ℃. After adding, raise the temperature to 65-70 ℃ and keep the temperature for 1h. Then cool to the chamber, acidify with hydrochloric acid to precipitate white solids, filter, wash with water, and dry at 60°C to obtain hydrazine-holding diacetic acid with a melting point of 166-167°C. Add hydrazine to water, slowly add 16% sodium nitrite solution under stirring, then add concentrated hydrochloric acid, and react at 25 ℃ for 1.5h. The reaction liquid is evaporated and concentrated to 1/3 of the original volume, placed to precipitate crystals, filtered, and dried at 60°C to obtain iminodiacetic acid. 2. Direct synthesis with hydrocyanic acid. A mixed aqueous solution of hydrocyanic acid, urotropine and formaldehyde was reacted in a tubular reactor to obtain iminodiacetonitrile. 3. Chloroacetic acid and aminoacetic acid method. 4. Aminoacetic acid and ethanolonitrile method. 5. Chloroacetic acid and ammonia reaction method. the preparation method is to add powdered calcium hydroxide and 25% ammonia water into the reaction kettle, slowly add chloroacetic acid solution under stirring, control the temperature at (50±5)℃, keep the reaction at the temperature for 3 hours after adding chloroacetic acid, then raise the temperature to 80 ℃, add hydrochloric acid dropwise, raise the temperature to 95~100 ℃ for reaction for 15min after adding, cool, move the reactant to the crystallization kettle, and crystallize the product. Reaction equation: ClCH2COOH + Ca(OH)2 + NH4OH → NH(CH2COO)2Ca + 3H2ONH(CH2COO)2Ca + 3HCl → NH(CH2CO()H)2 · HCl + CaCl2 can also be dehydrogenated with diethanolamine in the presence of a catalyst to prepare iminodiacetaldehyde, and then react with a base to form a part of sodium iminodiacetonate and a part to diacetamines. Such repeated reactions make all diacetamines generate imin. Now the more advanced method is the diethanolamine method. |
Disclaimer: Le contenu ci-dessus est destiné à des fins de référence et de communication uniquement entre les initiés de l'industrie, et ne garantit pas son exactitude ou son exhaustivité. Conformément aux lois et règlements pertinents et aux règlements de ce site Web, les unités ou personnes qui achètent des articles connexes doivent obtenir des qualifications et des conditions de qualification valides.
Téléphone de l'entreprise
+86-21-6420 0566
Heures de travail
Du lundi au vendredi
Téléphone portable:
13816217984
Courriel :
info@qinsun-lab.com
