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Thermo Scientific Chemicals
Nitrazine Yellow
pH indicator | CAS: 5423-07-4 | C16H8N4Na2O11S2 | 542.36 g/mol
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化学标识符
CAS5423-07-4
IUPAC Namedisodium 3-[(1E)-2-(2,4-dinitrophenyl)diazen-1-yl]-4-hydroxynaphthalene-2,7-disulfonate
Molecular FormulaC16H8N4Na2O11S2
InChI KeyXBLIFEQTVVSTIM-QIKYXUGXSA-L
SMILES[Na+].[Na+].OC1=C2C=CC(=CC2=CC(=C1N=NC1=C(C=C(C=C1)[N+]([O-])=O)[N+]([O-])=O)S([O-])(=O)=O)S([O-])(=O)=O
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规格
规格表
规格表Appearance (Color)Yellow to brown
FormPowder
Assay (unspecified)Dye content: 85% min.
Assay (unspecified)Visual transition interval: pH 6.0 yellow; pH 7.2 blue
Solution Test1mg/ml in water: clear, yellow-brown to brown solution
Nitrazine Yellow is used to test vaginal pH during late pregnancy to determine the breakage of the amniotic sac. To perform a fecal pH test for diagnosing intestinal infections or other digestive problems. In civil engineering, to determine the carbonatation spread in concrete structures and therefore assess the state of the rebar's passivation film.
This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.
Applications
Nitrazine Yellow is used to test vaginal pH during late pregnancy to determine the breakage of the amniotic sac. To perform a fecal pH test for diagnosing intestinal infections or other digestive problems. In civil engineering, to determine the carbonatation spread in concrete structures and therefore assess the state of the rebar′s passivation film.
Solubility
Dissolve in water at 1mg/ml
Notes
Store in cool, dry place in a tightly sealed container. Store away from oxidizing agents.
Nitrazine Yellow is used to test vaginal pH during late pregnancy to determine the breakage of the amniotic sac. To perform a fecal pH test for diagnosing intestinal infections or other digestive problems. In civil engineering, to determine the carbonatation spread in concrete structures and therefore assess the state of the rebar′s passivation film.
Solubility
Dissolve in water at 1mg/ml
Notes
Store in cool, dry place in a tightly sealed container. Store away from oxidizing agents.
RUO – Research Use Only
General References:
- Angela M. Mills and D. B. Garrioch. Use Of The Nitrazine Yellow Swab Test In The Diagnosis Of Ruptured Membranes. BJOG: An International Journal of Obstetrics & Gynaecology. 1977, 84 (2), 138-140.
- Lien Van der Schueren; Karen Hemelsoet; Veronique Van Speybroeck; Karen De Clerck. The influence of a polyamide matrix on the halochromic behaviour of the pH-sensitive azo dye Nitrazine Yellow. Dyes and Pigments. 2012, 94 (3), 443-451.