{"id":4050,"date":"2021-04-13T12:39:17","date_gmt":"2021-04-13T12:39:17","guid":{"rendered":"https:\/\/longchangchemical.com\/?post_type=product&p=4050"},"modified":"2025-12-22T09:38:21","modified_gmt":"2025-12-22T09:38:21","slug":"bromocresol-green-cas-76-60-8","status":"publish","type":"product","link":"https:\/\/longchangchemical.com\/pt\/product\/bromocresol-green-cas-76-60-8\/","title":{"rendered":"Verde de bromocresol CAS 76-60-8"},"content":{"rendered":"

Verde de bromocresol CAS 76-60-8<\/strong><\/h1>\n

PH Intervalo de mudan\u00e7a de cor: 3,8 (amarelo-verde)-5,4 (azul)<\/h4>\n

Comprimento de onda de absor\u00e7\u00e3o m\u00e1xima (nm): \u03bb1(PH3.8)440-445<\/h4>\n

\u03bb2(PH5.4) 615-618<\/h4>\n

Coeficiente de absor\u00e7\u00e3o de massa, L\/(cm.g): \u03b11(\u03bb1, amostra seca PH3.8)<\/h4>\n

\u03b12(\u03bb1, amostra seca PH5.4)<\/h4>\n

Teste de dissolu\u00e7\u00e3o em etanol: Teste aprovado<\/h4>\n

Perda na secagem: \u22643,0<\/h4>\n

Res\u00edduo na igni\u00e7\u00e3o (como SO4)%': \u22640,25<\/h4>\n

 <\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n

Item<\/h4>\n<\/td>\n

\n

Especifica\u00e7\u00f5es<\/h4>\n<\/td>\n

\n

Resultados<\/h4>\n<\/td>\n<\/tr>\n

\n

Ensaio (%)<\/h4>\n<\/td>\n

\n

\u226598.5<\/h4>\n<\/td>\n

\n

98.9<\/h4>\n<\/td>\n<\/tr>\n

\n

PH Intervalo de mudan\u00e7a de cor<\/h4>\n<\/td>\n

\n

3,8 (amarelo-verde)-5,4 (azul)<\/h4>\n<\/td>\n

\n

Passar no teste<\/h4>\n<\/td>\n<\/tr>\n

\n

Comprimento de onda de absor\u00e7\u00e3o m\u00e1xima (mm)<\/h4>\n<\/td>\n

\n

\u03bb1\u00a0<\/sub>(PH3.8)440-445<\/h4>\n<\/td>\n

\n

442<\/h4>\n<\/td>\n<\/tr>\n

\n

\u03bb2\u00a0<\/sub>(PH5.4) 615-618<\/h4>\n<\/td>\n

\n

616<\/h4>\n<\/td>\n<\/tr>\n

\n

Coeficiente de absor\u00e7\u00e3o de massa, L\/(cm.g)<\/h4>\n<\/td>\n

\n

\u03b11<\/sub>(\u03bb1<\/sub>, PH3.8 amostra seca) 24-28<\/h4>\n<\/td>\n

\n

25<\/h4>\n<\/td>\n<\/tr>\n

\n

\u03b12<\/sub>(\u03bb1<\/sub>, PH5.4 amostra seca) 53-58<\/h4>\n<\/td>\n

\n

55<\/h4>\n<\/td>\n<\/tr>\n

\n

Teste de dissolu\u00e7\u00e3o em etanol<\/h4>\n<\/td>\n

\n

Passar no teste<\/h4>\n<\/td>\n

\n

Passar no teste<\/h4>\n<\/td>\n<\/tr>\n

\n

Perda na secagem<\/h4>\n<\/td>\n

\n

\u22643.0<\/h4>\n<\/td>\n

\n

2.1<\/h4>\n<\/td>\n<\/tr>\n

\n

Res\u00edduo na igni\u00e7\u00e3o (como SO4<\/sub>)%<\/h4>\n<\/td>\n

\n

\u22640.25<\/h4>\n<\/td>\n

\n

0.25<\/h4>\n<\/td>\n<\/tr>\n

\n

Conclus\u00e3o<\/h4>\n<\/td>\n

\n

Os resultados est\u00e3o em conformidade com o indicador HG\/T4017-2008<\/h4>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

Uso do verde de bromocresol<\/strong><\/h2>\n

Como um importante corante, o verde de bromocresol (BCG) tem uma ampla gama de aplica\u00e7\u00f5es no campo da an\u00e1lise.<\/h4>\n

1. Um m\u00e9todo para testar o conte\u00fado de aminas livres em NMP, incluindo as etapas: prepara\u00e7\u00e3o do indicador verde-metil-vermelho de bromocresol; coleta de uma determinada quantidade de amostra de NMP em um recipiente, adi\u00e7\u00e3o de isopropanol e agita\u00e7\u00e3o suave para misturar; adi\u00e7\u00e3o do indicador verde-metil-vermelho de bromocresol e mistura uniforme, titula\u00e7\u00e3o com uma solu\u00e7\u00e3o padr\u00e3o de \u00e1cido clor\u00eddrico, de titula\u00e7\u00e3o verde a amarelada; de acordo com a f\u00f3rmula:% amina livre=c*V padr\u00e3o*K\/\u03c1*V, calcule o % amina livre na amostra de NMP. A presente inven\u00e7\u00e3o prepara o indicador verde de bromocresol-vermelho de metila e adota a titula\u00e7\u00e3o \u00e1cido-base para testar o teor de amina no NMP. De acordo com os par\u00e2metros no processo de titula\u00e7\u00e3o \u00e1cido-base, o teor de amina livre \u00e9 expresso como uma porcentagem de massa: % amina livre = c*V padr\u00e3o*K\/\u03c1*V, avaliar o desempenho do NMP de acordo com os resultados do teste. Al\u00e9m disso, o m\u00e9todo de teste \u00e9 simples, conveniente, r\u00e1pido e de baixo custo, e pode ser amplamente utilizado na produ\u00e7\u00e3o e na pesquisa.<\/h4>\n

2. Um papel de teste de indicador misto para medir a concentra\u00e7\u00e3o de am\u00f4nia no ar e seu m\u00e9todo de prepara\u00e7\u00e3o e detec\u00e7\u00e3o pertencem ao campo t\u00e9cnico de monitoramento ambiental e higiene industrial. O papel de teste \u00e9 um papel de teste carregado com verde de bromocresol, vermelho de metila, \u00e1cido e surfactante n\u00e3o i\u00f4nico no papel base; de acordo com a propor\u00e7\u00e3o de massa, verde de bromocresol: vermelho de metila: \u00e1cido: surfactante n\u00e3o i\u00f4nico = (1,0 \uff5e 2,0): (0,188 \uff5e 0,75): (0,75 \uff5e 2,0): (2,5 \uff5e 7)\u00d710-3. O m\u00e9todo de prepara\u00e7\u00e3o \u00e9 o seguinte: preparar um l\u00edquido de imers\u00e3o de acordo com a propor\u00e7\u00e3o do reagente, imergir o papel base, secar e selar com pl\u00e1stico. O m\u00e9todo de detec\u00e7\u00e3o \u00e9 o seguinte: a am\u00f4nia no ar na \u00e1rea de detec\u00e7\u00e3o reage com o reagente misto do papel de teste, mudando de vermelho vinho para verde, e a concentra\u00e7\u00e3o de am\u00f4nia no ar na \u00e1rea de detec\u00e7\u00e3o \u00e9 obtida de acordo com a rela\u00e7\u00e3o entre o comprimento da faixa de mudan\u00e7a de cor do papel de teste e a concentra\u00e7\u00e3o de am\u00f4nia. O papel de teste tem as caracter\u00edsticas de resposta sens\u00edvel, alta precis\u00e3o, baixo custo de produ\u00e7\u00e3o, uso conveniente, etc., e tem praticidade e benef\u00edcios econ\u00f4micos significativos.
\n3. Esse produto pode usar o m\u00e9todo do indicador \u00e1cido-base para determinar o grau de desacetila\u00e7\u00e3o dos quitooligossacar\u00eddeos.<\/h4>\n

 <\/p>\n

Embalagem de bromocresol verde<\/strong><\/h2>\n

1 kg\/saco 25 kg\/tambor.<\/h4>\n

 <\/p>\n

Armazenamento de verde de bromocresol<\/strong><\/h2>\n

Armazenado em local fresco, seco e ventilado.<\/h4>\n

 <\/p>\n

Produtos da mesma s\u00e9rie<\/strong><\/h2>\n\n\n\n\n
\n

P\u00farpura de bromocresol<\/span><\/a><\/h4>\n<\/td>\n

\n

115-40-2<\/h4>\n<\/td>\n<\/tr>\n

\n

Verde bromocresol<\/h4>\n<\/td>\n

\n

76-60-8<\/h4>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

Entre em contato conosco agora!<\/b><\/strong><\/h2>\n

Se precisar de COA, MSDS ou TDS, preencha suas informa\u00e7\u00f5es de contato no formul\u00e1rio abaixo. Normalmente, entraremos em contato em 24 horas. Voc\u00ea tamb\u00e9m pode me enviar um e-mail info@longchangchemical.com<\/a><\/span> durante o hor\u00e1rio comercial (das 8h30 \u00e0s 18h UTC+8 de segunda a s\u00e1bado) ou use o bate-papo ao vivo do site para obter uma resposta imediata.<\/b><\/strong><\/h4>\n

 <\/p>","protected":false},"excerpt":{"rendered":"

Nome qu\u00edmico: Bromocresol verde<\/h4>\n

CAS: 76-60-8<\/h4>\n

F\u00f3rmula molecular: C21H14Br4O5S<\/h4>\n

Peso molecular: 698,01<\/h4>\n

Apar\u00eancia: Cristal amarelo<\/h4>","protected":false},"featured_media":4493,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[69],"product_tag":[],"class_list":{"0":"post-4050","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-catalysts-chemical-auxiliary-agents","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"yoast_head":"\nChina Bromocresol green Manufacturer \uff06 Supplier - Longchang chemical Co., Ltd.<\/title>\n<meta name=\"description\" content=\"Longchang Chemical is a leading manufacturer and supplier of Bromocresol green in China. Buy Bromocresol green in china. 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