NameSodium-t-butoxideSynonymsSTBNatBSodium-t-butoxideSodiuM tert-butoxisodium tertbutoxideSodium ter
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| Nom | Sodium-t-butoxide |
| Synonymes | STB NatB Sodium-t-butoxide SodiuM tert-butoxi sodium tertbutoxide Sodium tert Butoxide sodiumt-butoxide,stb sodium tert-butoxide sodiumt-butoxide,stb,in Sodium tertiary butoxide Sodium tert-butyl alcohol Sodium tert-butoxide (STB) sodium 2-methylpropan-2-olate sodiuM 2-Methyl-1-oxopropan-2-yl SODIUM TERT-BUTYLATE FOR SYNTHESIS |
| CAS | 865-48-5 |
| EINECS | 212-741-9 |
| InChI | InChI=1/C4H9O.Na/c1-4(2,3)5;/h1-3H3;/q-1;+1 |
| Formule moléculaire | C4H9NaO |
| Masse molaire | 96.1 |
| Densité | 1,104 g/cm3 |
| Point de fusion | 180 °C |
| point Boling | 180°C/1mmHg |
| Point d'éclair | 12°C |
| Solubilité dans l'eau | reacts |
| Solubilité | very slightly in Tetrahydrofuran |
| pression vapeur | 0Pa at 20℃ |
| Apparence | poudre |
| Gravité spécifique | 1.104 |
| Couleur | white to off-white |
| BRN | 3654215 |
| Condition de stockage | Conserver à moins de +30°C. |
| Sensible | 7: reacts slowly with moisture/water |
| Indice de réfraction | n20/D1.413 |
| Propriétés physiques et chimiques | Melting point 180°C water-soluble reactions |
| Utilisation | For organic synthesis intermediates, pharmaceutical intermediates |
| Codes de risque | R11 - hautement inflammable R14 - Reacts violently with water R34 - provoque des brûlures R37 - stimulation du système respiratoire R35 - Causes severe burns R36/37/38 - Irritant pour les yeux, le système respiratoire et la peau. R40 - Limited evidence of a carcinogenic effect R19 - May form explosive peroxides |
| Description de la sécurité | S26 - En cas de contact avec les yeux, rincer immédiatement avec beaucoup d'eau et consulter un médecin. S36 / 37 / 39 - porter des vêtements de protection appropriés, des gants et une protection oculaire / faciale. S43 - In case of fire use ... (there follows the type of fire-fighting equipment to be used.) S45 - en cas d'accident ou de malaise, consulter immédiatement un médecin (en montrant l'étiquette si possible). S7/8 - S8 - Keep container dry. S16 - Éloigner les sources d'allumage. S36 - porter des vêtements de protection appropriés. |
| Un id | UN 3206 4.2/PG 2 |
| Wgk Allemagne | 3 |
| Code F de la marque Fluka | 1-3-10 |
| TSCA | Oui |
| Code SH | 29051900 |
| Classe de danger | 4.2 |
| Catégorie d'emballage | II |
| Overview | Sodium tert-butoxide, also known as the third Sodium butoxide, English name Sodium tert-butoxide, white crystal, molecular formula C4H9NaO, molecular weight of 96.10, its stable nature at room temperature and atmospheric pressure, slightly harmful to water, used as intermediates in organic synthesis, pharmaceutical intermediates; Or as a strong alkali is widely used in chemical industry, medicine, pesticides and organic synthesis in the condensation, rearrangement and ring opening reaction, therefore, sodium tert-butoxide more and more by the fine chemical and pesticide, pharmaceutical industry. |
| Basic | sodium tert-butoxide is an organic compound with chemical formula (CH3) 3con A, which is a strong base and has weak nucleophilic property, the chemical reaction is similar to potassium tert-butoxide. |
| Application | sodium tert-butoxide white crystal, as a strong base widely used in chemical, pharmaceutical, pesticide and organic synthesis of condensation, rearrangement and ring-opening reactions. Stable under normal temperature and pressure, avoid strong reducing agent, moisture, air, acid contact. There is little harm to water, so as to avoid exposure of undiluted or large amount of products to groundwater, water channels or sewage systems; If there is no government permission, do not discharge the materials into the surrounding environment. Used as organic synthesis intermediates, pharmaceutical intermediates; As a strong base is widely used in chemical, pharmaceutical, pesticide and other organic synthesis of condensation, rearrangement and ring opening reaction. |
| Préparation | sodium tert-butoxide is synthesized by using toluene or heptane as the solvent of the reaction system according to the following reaction formula, reflux condenser and thermometer in a 500mL reactor, add 240mL of toluene or heptane (moisture content less than 0.04%), add 9.8g 99% sodium amino acid (about 0.25mol) and 19.0g of 99% tert-butyl alcohol (about 0.254mol), the molar ratio of sodium amino acid and tert-butyl alcohol is 1:1.015, fully stirred to dissolve it completely, heated to 70 C to start the reaction, the released ammonia gas is absorbed with water or alkali solution, and the reaction is heated to 100~110 ℃ and then kept for 1H to stop the reaction. After the reaction is sufficient and complete, the reactants are cooled, atmospheric distillation of most of the reaction medium and reaction slightly excessive tert-butyl alcohol, and then vacuum distillation of the remaining small amount of reaction medium to obtain white solid powder about 25g, product content by acid-base titration analysis of more than 99%. |
| Utilisation | as a strong base, it is widely used in condensation, rearrangement and ring opening reactions in chemical, pharmaceutical, pesticide and other organic synthesis. used in organic synthesis sodium tert-butoxide is used as an intermediate in organic synthesis and a pharmaceutical intermediate. |
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