156-57-0<\/a>. Trata-se de um s\u00f3lido cristalino branco, sol\u00favel em \u00e1gua e com um odor pungente. Este composto \u00e9 amplamente utilizado em v\u00e1rias ind\u00fastrias, incluindo a farmac\u00eautica, a agr\u00edcola e a cosm\u00e9tica. Neste artigo, vamos explorar os diferentes aspectos do Cloridrato de Cisteamina, fornecendo uma compreens\u00e3o abrangente das suas propriedades e aplica\u00e7\u00f5es.<\/p>\nPropriedades qu\u00edmicas do cloridrato de cisteamina<\/h3>\n
O Cloridrato de Cisteamina \u00e9 um derivado da tioureia, o que significa que cont\u00e9m um grupo tioureia (-NH-C(=S)-NH2) na sua estrutura molecular. Este grupo confere propriedades qu\u00edmicas \u00fanicas ao composto, tornando-o vers\u00e1til para v\u00e1rias aplica\u00e7\u00f5es. A f\u00f3rmula molecular do cloridrato de cisteamina \u00e9 C2H7NS-HCl, e a sua massa molar \u00e9 129,62 g\/mol. O composto \u00e9 ligeiramente sol\u00favel em \u00e1gua e tem um ponto de fus\u00e3o de aproximadamente 233\u00b0C. \u00c9 tamb\u00e9m higrosc\u00f3pico, o que significa que absorve a humidade do ar.<\/p>\n
Aplica\u00e7\u00f5es do cloridrato de cisteamina<\/h3>\n
O cloridrato de cisteamina \u00e9 amplamente utilizado em v\u00e1rios sectores devido \u00e0s suas propriedades \u00fanicas. Eis algumas das suas principais aplica\u00e7\u00f5es:<\/p>\n
1. **Produtos farmac\u00eauticos**: O cloridrato de cisteamina \u00e9 utilizado na ind\u00fastria farmac\u00eautica como precursor para a s\u00edntese de v\u00e1rios medicamentos. Est\u00e1 envolvido na produ\u00e7\u00e3o de ciste\u00edna, que \u00e9 um amino\u00e1cido essencial e um precursor do glutati\u00e3o, um poderoso antioxidante.<\/p>\n
2. **Agricultura**: Na agricultura, o cloridrato de cisteamina \u00e9 utilizado como fungicida e herbicida. Ajuda a controlar doen\u00e7as das plantas e ervas daninhas, melhorando assim o rendimento das culturas.<\/p>\n
3. **Cosm\u00e9tica**: O composto \u00e9 utilizado na ind\u00fastria cosm\u00e9tica como agente de tratamento capilar. Ajuda a reduzir a queda do cabelo e a promover o seu crescimento.<\/p>\n
4. **T\u00eaxteis**: O cloridrato de cisteamina \u00e9 utilizado na ind\u00fastria t\u00eaxtil como auxiliar de tingimento e amaciador. Melhora a solidez da cor e a suavidade dos tecidos.<\/p>\n
S\u00edntese do cloridrato de cisteamina<\/h3>\n
A s\u00edntese do cloridrato de cisteamina envolve v\u00e1rias etapas, incluindo a rea\u00e7\u00e3o da etileno tioureia com \u00e1cido clor\u00eddrico. O processo pode ser resumido da seguinte forma:<\/p>\n
1. **Rea\u00e7\u00e3o da etilenotioureia com \u00e1cido clor\u00eddrico**: A etilenotioureia \u00e9 tratada com \u00e1cido clor\u00eddrico para formar cloridrato de cisteamina. Esta rea\u00e7\u00e3o \u00e9 normalmente realizada numa solu\u00e7\u00e3o aquosa \u00e0 temperatura ambiente.<\/p>\n
2. **Purifica\u00e7\u00e3o**: Ap\u00f3s a rea\u00e7\u00e3o, o produto \u00e9 purificado por cristaliza\u00e7\u00e3o ou outras t\u00e9cnicas de purifica\u00e7\u00e3o para obter a pureza desejada.<\/p>\n
3. **Secagem**: O cloridrato de cisteamina purificado \u00e9 ent\u00e3o seco para remover qualquer humidade remanescente, resultando num s\u00f3lido cristalino branco.<\/p>\n
Considera\u00e7\u00f5es de seguran\u00e7a e estatuto regulamentar<\/h3>\n
O Cloridrato de Cisteamina \u00e9 considerado seguro para utiliza\u00e7\u00e3o em v\u00e1rias aplica\u00e7\u00f5es; no entanto, \u00e9 importante manuse\u00e1-lo com cuidado. O composto \u00e9 irritante para a pele, olhos e sistema respirat\u00f3rio. Deve ser armazenado num local fresco e seco, afastado da luz solar direta e de materiais incompat\u00edveis.<\/p>\n
Relativamente ao estatuto regulamentar, o Cloridrato de Cisteamina est\u00e1 sujeito a regulamentos em diferentes pa\u00edses. \u00c9 importante que os fabricantes e utilizadores cumpram os regulamentos e orienta\u00e7\u00f5es relevantes para garantir a utiliza\u00e7\u00e3o segura e legal do composto.<\/p>\n
Conclus\u00e3o<\/h3>\n
Em conclus\u00e3o, o cloridrato de cisteamina, com o n\u00famero CAS 156-57-0<\/a>\u00e9 um composto vers\u00e1til com uma vasta gama de aplica\u00e7\u00f5es. As suas propriedades qu\u00edmicas \u00fanicas tornam-no valioso em produtos farmac\u00eauticos, agricultura, cosm\u00e9ticos e t\u00eaxteis. Compreender a sua s\u00edntese, considera\u00e7\u00f5es de seguran\u00e7a e estatuto regulamentar \u00e9 crucial para a sua utiliza\u00e7\u00e3o segura e eficaz. Este artigo apresenta uma vis\u00e3o global do Cloridrato de Cisteamina, com o objetivo de melhorar o conhecimento das suas propriedades e aplica\u00e7\u00f5es.<\/p>\nPalavras-chave: Cloridrato de Cisteamina, CAS 156-57-0, propriedades qu\u00edmicas, aplica\u00e7\u00f5es, s\u00edntese, considera\u00e7\u00f5es de seguran\u00e7a, estatuto regulamentar.<\/p>","protected":false},"excerpt":{"rendered":"
ResumoEste artigo apresenta uma panor\u00e2mica pormenorizada do cloridrato de cisteamina, um composto com o n\u00famero CAS<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-16076","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n
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