Metylorange water_ACS reagent grade 85% Dye, Sigma-Aldrich®
Leverandør: SIGMA ALDRICH MICROSCOPYSamlet vurdering
Gennemsntilig vurdering
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Synonymer:
4-((4-(Dimethylamino)phenyl)diazenyl)benzenesulphonic acid, sodium salt, Methyl orange sodium salt, Helianthine
MQ200
Methyl orange (C.I. 13025) is the sodium salt of p-dimethylaminoazobenzenesulfonic acid. It is an orange-colored synthetic dye, which changes color depending on the pH of the solution. It develops a red color in acidic solution and yellow color in basic solution.
- Methyl orange is used as a:
- pH indicator in the cell sap
- Counterstain to crystal violet in staining pollen tubes
- Component of a polychrome histological stain
- Solution indicator, such as in assays of oxalic and malonic acids
- In other biomedical applications that include use in film dosimeters and as a reagent for the assay of bromide ions
Formel:
C₁₄H₁₄N₃NaO₃S Molekylvægt: 327.34 g/mol Kogepunkt: ∼90 °C (1013 hPa) Smeltepunkt: >300 °C Massefylde: ∼1 g/cm³ (20 °C) Flammepunkt: 38 Opbevaringstemperatur: Stue temperatur |
MDL Number:
MFCD00007502 CAS-nummer: 547-58-0 EINECS: 208-925-3 UN nummer: 3143 ADR: 6.1 III Merck Index: 13,06127 |
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Specifikationer Testresultater
Appearance (colour) | Orange |
Appearance (form) | Powder |
Infrared spectrum | Conforms to structure |
Visual interval, pH 3.0 pink or red | Pass |
Visual interval, pH 3.2 pinkish orange | Pass |
Visual interval, pH 4.4 yellow | Pass |
Appearance (clarity) | Pass |
Carbon | 43.7 - 59.1% |
Nitrogen | 10.9 - 14.8% |
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