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| Product | Description | |
|---|---|---|
| Bromothymol Blue sodium salt | 25g Pack Size. Group: Stains & Indicators. Formula: C27H27Br2NaO5S. CAS No. 34722-90-2. Prepack ID 90027176-25g. Molecular Weight 646.36. See USA prepack pricing. |  |
| Bromothymol Blue, Sodium Salt, ACS (Dibromothymolsulfone phthalein, BTB) | Bromothymol blue (alt: dibromothymolsulfoneph thalein, bromthymol blue, BTB) is a chemical indicator for weak acids and bases. The bromothymol blue acts as a weak acid in solution and therefore can be in acid or base forms which appear yellow and blue respectively. It is green in neutral solution. Bromothymol blue is typically sold in solid form as the sodium salt of the acid indicator. It also finds occasional use in the laboratory as a biological slide stain. At this point it is already blue, and a drop or two is used on a water slide. The coverslip is placed ontop of the water droplet and the specimen in it, with the blue coloring mixed in. It is sometimes used to define cell walls or nuclei under the microscope.Bromothymol blue is mostly used in measuring substances that would have relatively low acidic or basic levels (near a neutral pH). It's often used in pools, fish tanks, or measuring the presence of carbonic acid in a liquid. Group: Biochemicals. Alternative Names: 3', 3''-Dibromothymolsulfoneph thalein sodium salt; BTB. Grades: ACS Grade. CAS No. 34722-90-2. Pack Sizes: 25g, 100g, 250g. Molecular Formula: C27H27Br2O5SNa, Molecular Weight: 646.36. US Biological Life Sciences. |  Worldwide |
| Bromthymol Blue, 0.01% Aqueous, Laboratory Grade, 100 mL | Formula: C27H27Br2NaO5S. Formula Wt: 646. 39 Notes: Sodium salt, water soluble; when making a solution with this, if it turns green, add 4% sodium hydroxide solution dropwise until it turns blue. Storage Code: Green; general chemical storage. Alternative Names: BTB, bromothymol blue. Grades: chem-grade laboratory. CAS No. 34722-90-2. Product ID: 849157. -- SOLD FOR EDUCATIONAL USE ONLY -- |  |
| Bromthymol Blue, 0.01% Aqueous, Laboratory Grade, 500 mL | Formula: C27H27Br2NaO5S. Formula Wt: 646. 39. Notes: Sodium salt, water soluble; when making a solution with this, if it turns green, add 4% sodium hydroxide solution dropwise until it turns blue. Storage Code: Green; general chemical storage. Alternative Names: BTB, bromothymol blue. Grades: chem-grade laboratory. CAS No. 34722-90-2. Product ID: 849159. -- SOLD FOR EDUCATIONAL USE ONLY -- | |
| Bromthymol Blue, 0.04% Aqueous, Laboratory Grade, 100 mL | Formula: C27H27Br2NaO5S. Formula Wt: 646. 39. Notes: Sodium salt, water soluble; when making a solution with this, if it turns green, add 4% sodium hydroxide solution dropwise until it turns blue. Storage Code: Green; general chemical storage. Group: chem-category ph-indicators. Alternative Names: BTB, bromothymol blue. Grades: chem-grade laboratory. CAS No. 34722-90-2. Product ID: 849164. -- SOLD FOR EDUCATIONAL USE ONLY -- | |
| Bromthymol Blue, 0.04% Aqueous, Laboratory Grade, 1 L | Formula: C27H27Br2NaO5S. Formula Wt: 646. 39. Notes: Sodium salt, water soluble; when making a solution with this, if it turns green, add 4% sodium hydroxide solution dropwise until it turns blue. Storage Code: Green; general chemical storage. Group: chem-category ph-indicators. Alternative Names: BTB, bromothymol blue. Grades: chem-grade laboratory. CAS No. 34722-90-2. Product ID: 849166. -- SOLD FOR EDUCATIONAL USE ONLY -- | |
| Bromthymol Blue, 0.04% Aqueous, Laboratory Grade, 30-mL Dropper Bottle | Formula: C27H27Br2NaO5S. Formula Wt: 646. 39 Notes: Sodium salt, water soluble; when making a solution with this, if it turns green, add 4% sodium hydroxide solution dropwise until it turns blue. Storage Code: Green; general chemical storage. Group: chem-category ph-indicators. Alternative Names: BTB, bromothymol blue. Grades: chem-grade laboratory. CAS No. 34722-90-2. Product ID: 849162. -- SOLD FOR EDUCATIONAL USE ONLY -- | |
| Bromthymol Blue, 0.04% Aqueous, Laboratory Grade, 4 L | Formula: C27H27Br2NaO5S. Formula Wt: 646. 39. Notes: Sodium salt, water soluble; when making a solution with this, if it turns green, add 4% sodium hydroxide solution dropwise until it turns blue. Storage Code: Green; general chemical storage. Group: chem-category ph-indicators. Alternative Names: BTB, bromothymol blue. Grades: chem-grade laboratory. CAS No. 34722-90-2. Product ID: 849167. -- SOLD FOR EDUCATIONAL USE ONLY -- | |
| Bromthymol Blue, 0.04% Aqueous, Laboratory Grade, 500 mL | Formula: C27H27Br2NaO5S. Formula Wt: 646. 39. Notes: Sodium salt, water soluble; when making a solution with this, if it turns green, add 4% sodium hydroxide solution dropwise until it turns blue. Storage Code: Green; general chemical storage. Group: chem-category ph-indicators. Alternative Names: BTB, bromothymol blue. Grades: chem-grade laboratory. CAS No. 34722-90-2. Product ID: 849165. -- SOLD FOR EDUCATIONAL USE ONLY -- | |
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