{"id":1671,"date":"2019-01-13T16:30:38","date_gmt":"2019-01-13T14:30:38","guid":{"rendered":"https:\/\/wissen.science-and-fun.de\/chemistry\/?page_id=1671"},"modified":"2019-01-13T16:31:01","modified_gmt":"2019-01-13T14:31:01","slug":"acid-base-indicator","status":"publish","type":"page","link":"https:\/\/wissen.science-and-fun.de\/chemistry\/chemistry\/acid-base-indicator\/","title":{"rendered":"Acid Base Indicator"},"content":{"rendered":"

Acid-Base Indicators<\/h2>\n\n\n\n\n\t\n\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t
Indicator<\/th>Handling range
Colour change<\/th>		Indicator solution (production)<\/th>\n<\/tr>\n<\/thead>\n
Malachite green-Oxalate<\/td>0,0 - 2,0

\nyellow - green blue<\/td>		0,1g in 100ml water<\/td>\n<\/tr>\n
Brillant green<\/td>0,0 - 2,6

\nyellow - green<\/td>		0,1g in 100ml water<\/td>\n<\/tr>\n
Eosin (yellowish)<\/td>0,0 - 3,0

\nyellow - green fluorescence<\/td>		0,1g in 100ml water<\/td>\n<\/tr>\n
Erythrosine B<\/td>0,0 - 3,6

\norange - reed<\/td>		0,1g in 100ml water<\/td>\n<\/tr>\n
Methyl green<\/td>0,1 - 2,3

\nyellow - blue<\/td>		0,1g in 100ml water<\/td>\n<\/tr>\n
Methyl violet<\/td>0,1 - 2,7

\nyellow - violet<\/td>		0,1g in 100ml Ethanol (20%)<\/td>\n<\/tr>\n
picric acid<\/td>0,2 - 1,0

\ncolourless - yellow<\/td>		0,1g in 100ml Ethanol (70%)<\/td>\n<\/tr>\n
Cresol red<\/td>0,2 - 1,8

\nred - yellow<\/td>		0,1g in 100ml Ethanol (20%) or 0,04g in 1,05ml 0,1M NaOH and water up to 100ml<\/td>\n<\/tr>\n
Crystal violet<\/td>0,8 - 2,6

\nyellow - blue violet
\n<\/td>		0,1g in 100ml Ethanol (70%)<\/td>\n<\/tr>\n
Metacresol purple<\/td>1,2 - 2,8

\nred - yellow<\/td>		0.04g in 100ml ethanol (20%) or 0.04g in 1.05ml 0.1M NaOH and make up to 100ml with water<\/td>\n<\/tr>\n
Thymol blue<\/td>1,2 - 2,8

\nred - yellow<\/td>		0.04g in 100ml ethanol (20%) or 0.04g in 0.86ml 0.1M NaOH and make up to 100ml with water<\/td>\n<\/tr>\n
p- Xylenol blue<\/td>1,2 - 2,8

\nred - yellow<\/td>		0.1g in 100ml ethanol (50%) or 0.04g in 0.98ml 0.1M NaOH and make up to 100ml with water<\/td>\n<\/tr>\n
2,2',2'',4,4'-Pentamethoxy red<\/td>1,2 - 3,2

\nred - colourless<\/td>		0,1g in 100ml Ethanol (96%)<\/td>\n<\/tr>\n
Eosin, bluish<\/td>1,4 - 2,4

\ncolourless - pink fluorescent<\/td>		0,1g in 100ml Water<\/td>\n<\/tr>\n
Quinaldine red <\/td>1,4 - 3,2

\ncolourless - pink<\/td>		0,1g in 100ml Ethanol (60%)<\/td>\n<\/tr>\n
2,4-Dinitrophenole<\/td>2,8 - 4,7

\ncolourless - yellow<\/td>		0,1g in 100ml Ethanol (70%)<\/td>\n<\/tr>\n
Methyl yellow
\n<\/td>		2,9 - 4,0

\nred - yellow orange<\/td>		0,1-0,5g in 100ml Ethanol (90%)<\/td>\n<\/tr>\n
Bromochlorophenol Blue<\/td>3,0 - 4,6

\nyellow - blue violet<\/td>		0.1g in 100ml ethanol (20%) or 0.04g in 0.69ml 0.1M NaOH and make up to 100ml with water<\/td>\n<\/tr>\n
Bromophenol blue<\/td>3,0 - 4,6

\nyellow - blue violet<\/td>		0.1g in 100ml ethanol (20%) or 0.04g in 0.6ml 0.1M NaOH and make up to 100ml with water<\/td>\n<\/tr>\n
Congo red<\/td>3,0 - 5,2

\nblue - yellow orange<\/td>		0,2g in 100ml Water<\/td>\n<\/tr>\n
Methyl orange<\/td>3,1 - 4,4

\nred - yellow orange<\/td>		0,04g in 100ml Water or 100ml Ethanol (20%)<\/td>\n<\/tr>\n
Mixed indicator 4.5 acc. to Mortimer<\/td>4,3 - 5,2

\nred - blue<\/td>		<\/td>\n<\/tr>\n
Bromocresol green
\n<\/td>		3,8 - 5,4

\nyellow - blue<\/td>		0.1g in 100ml ethanol (20%) or 0.04g in 0.58ml 0.1M NaOH and make up to 100ml with water<\/td>\n<\/tr>\n
2,5-Dinitrophenole<\/td>4,0 - 5,8

\ncolourless - yellow<\/td>		0,05 - 0,1g in 100ml Ethanol (70%)<\/td>\n<\/tr>\n
Sodium alizarinesulfonate<\/td>4,3 - 6,3

\nyellow - violet<\/td>		0,1g in 100ml Ethanol (50%) or 100ml Water<\/td>\n<\/tr>\n
Methyl red<\/td>4,4 - 6,2

\nred - yellow orange<\/td>		0,1g in 100ml Ethanol (96%)<\/td>\n<\/tr>\n
Methyl red sodium salt<\/td>4,4 - 6,2

\nred - yellow orange<\/td>		<\/td>\n<\/tr>\n
mixed indicator 5<\/td>4,4 - 5,8

\nred-violet - green<\/td>		<\/td>\n<\/tr>\n
Chlorophenol red<\/td>4,8 - 6,4

\nyellow - violet<\/td>		0.1g in 100ml ethanol (20%) or 0.04g in 0.94ml 0.1M NaOH and make up to 100ml with water<\/td>\n<\/tr>\n
Litmus<\/td>5,0 - 8,0

\nred - blue<\/td>		4g in 100ml Water<\/td>\n<\/tr>\n
Bromocresol purple<\/td>5,2 - 6,8

\nyellow - purple<\/td>		0.1g in 100ml ethanol (20%) or 0.04g in 0.74ml 0.1M NaOH and make up to 100ml with water<\/td>\n<\/tr>\n
Bromophenol red<\/td>5,2 - 6,8

\norange-yellow - purple<\/td>		0.1g in 100ml ethanol (20%) or 0.04g in 0.94ml 0.1M NaOH and make up to 100ml with water<\/td>\n<\/tr>\n
4-Nitrophenol<\/td>5,4 - 7,5

\ncolorless - yellow<\/td>		0,2g in 100ml Ethanol (96%) or 0,08g in 100ml Water<\/td>\n<\/tr>\n
Bromoxylenol blue <\/td>5,7 - 7,5

\nyellow -blue<\/td>		0,1g in 100ml Ethanol (96%)<\/td>\n<\/tr>\n
Alizarin<\/td>5,8 - 7,2

\nyellow - red<\/td>		0,5g in 100ml Ethanol (96%)<\/td>\n<\/tr>\n
Bromothymol blue<\/td>6,0 - 7,6

\nyellow - blue<\/td>		0.1g in 100ml ethanol (20%) or 0.04g in 0.64ml 0.1M NaOH and make up to 100ml with water<\/td>\n<\/tr>\n
Phenol red<\/td>6,4 - 8,2

\nyellow - red violet<\/td>		0,1g in 100ml ethanol (20%) or 0,04g in 1,13ml 0,1M NaOH and make up to 100ml with water<\/td>\n<\/tr>\n
3-Nitrophenol<\/td>6,6 - 8,6

\ncolourless - yellow orange<\/td>		0,3g in 100ml Ethanol (96%) or 0,08g in 100ml Water<\/td>\n<\/tr>\n
Neutral red<\/td>6,8 - 8,0

\nblue red - orange yellow<\/td>		0,3g in 100ml Ethanol (70%)<\/td>\n<\/tr>\n
Bromsulphthalein<\/td>7,0 - 8,0

\ncolorless - purple<\/td>		0,1g in 100ml Ethanol (96%)<\/td>\n<\/tr>\n
Cresol red<\/td>7,0 - 8,8

\norange - purple<\/td>		0,1g in 100ml ethanol (50%) or 0,04g in 1,05ml 0,1M NaOH and make up to 100ml with water<\/td>\n<\/tr>\n
Naphtholphthalein<\/td>7,1 - 8,3

\nbrownish - blue-green<\/td>		0,1g in 100ml Ethanol (96%)<\/td>\n<\/tr>\n
Metacresol purple<\/td>7,4 - 9,0

\nyellow - purple<\/td>		0.04g in 100ml ethanol (20%) or 0.04g in 1.05ml 0.1M NaOH and make up to 100ml with water<\/td>\n<\/tr>\n
Thymol blue<\/td>8,0 - 9,6

\nyellow - blue<\/td>		0.04g in 100ml ethanol (20%) or 0.04g in 0.86ml 0.1M NaOH and make up to 100ml with water<\/td>\n<\/tr>\n
p-Xylenol blue<\/td>8,0 - 9,6

\nyellow - blue<\/td>		0.1g in 100ml ethanol (50%) or 0.04g in 0.98ml 0.1M NaOH and make up to 100ml with water<\/td>\n<\/tr>\n
Phenolphthalein<\/td>8,2 - 9,8

\ncolourless - red violet<\/td>		0,1g in 100ml Ethanol (96%)<\/td>\n<\/tr>\n
Thymolphthalein<\/td>9,3 - 10,5

\ncolourless - blue<\/td>		0,1g in 100ml Ethanol (50%)<\/td>\n<\/tr>\n
Alkali blue<\/td>9,4 - 14,0

\nviolet - pink<\/td>		0,1g in 100ml Ethanol (96%)<\/td>\n<\/tr>\n
Alizarin yellow GG<\/td>10,0 - 12,1

\nlight yellow - brownish yellow<\/td>		0,1g in 100ml Water<\/td>\n<\/tr>\n
Alizarin<\/td>10,1 - 12,1

\nred - purple<\/td>		0,5g in 100ml Ethanol (96%)<\/td>\n<\/tr>\n
Titan yellow<\/td>12,0 - 13,0

\nyellow - red<\/td>		0,1g in 100ml Ethanol (20%)<\/td>\n<\/tr>\n
Indigo carmine<\/td>11,5 - 13,0

\nblue - yellow
\n<\/td>		0,25g in 100ml Ethanol (50%) or 1g in 100ml Water<\/td>\n<\/tr>\n
Epsilon blue<\/td>11,6 - 13,0

\norange - violet<\/td>		0,1g in 100ml Water<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nOverview of common acid-base indicators<\/span>\n\n\n\n\n

Source: Merck tables for the laboratory<\/p>\n","protected":false},"excerpt":{"rendered":"

Source: Merck tables for the laboratory<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":34,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"wprm-recipe-roundup-name":"","wprm-recipe-roundup-description":"","footnotes":""},"class_list":["post-1671","page","type-page","status-publish","hentry","nodate","item-wrap"],"yoast_head":"\nAcid Base Indicator - Steffen's Chemistry Pages<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/wissen.science-and-fun.de\/chemistry\/chemistry\/acid-base-indicator\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Acid Base Indicator - Steffen's Chemistry Pages\" \/>\n<meta property=\"og:description\" content=\"Source: Merck tables for the laboratory\" \/>\n<meta property=\"og:url\" content=\"https:\/\/wissen.science-and-fun.de\/chemistry\/chemistry\/acid-base-indicator\/\" \/>\n<meta property=\"og:site_name\" content=\"Steffen's Chemistry Pages\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/knowledgeforchemists\" \/>\n<meta property=\"article:modified_time\" content=\"2019-01-13T14:31:01+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@SienceFun\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/wissen.science-and-fun.de\\\/chemistry\\\/chemistry\\\/acid-base-indicator\\\/\",\"url\":\"https:\\\/\\\/wissen.science-and-fun.de\\\/chemistry\\\/chemistry\\\/acid-base-indicator\\\/\",\"name\":\"Acid Base Indicator - 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