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    Chromotropic acid disodium salt dihydrate

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      Chromotropic acid disodium salt dihydrate

      SKU
      C0231

      Category: Non Fluorescent Detection & Chromogene Detection

      Synonyms
      1,8-Dihydroxynaphthalene-3,6-disulfonic acid disodium salt , 4,5-Dihydroxynaphthalene-2,7-disulfonic acid disodium salt , Mordant Brown 7 Dihydrate , Chromogen C Dihydrate
      5808-22-0
      CAS-Number
      (HO)2C10H4(SO3Na)2·2H2O
      Molecular Formula
      400.29
      Molecular Weight

      • Product Data
      • Handling
      • Safety Information
      • Details

      Specifications

      Purity
      ≥99% (T)
      Identity
      1H-NMR
      Appearance
      Off-white solid

      Properties

      Melting Point
      300°C
      Solvents
      water

      Downloads

      Safety Data Sheet
      CDX C0231 MSDS.pdf
      Handling Advice
      Protect from light and moisture.
      Use / Stability
      Stable for at least 2 years after receipt when stored at RT.
      Long Term Storage
      RT
      Short Term Storage
      RT
      Shipping
      AMBIENT
      Transportation
      Not dangerous goods
      Signal word
      Warning
      GHS Symbol
      GHS07
      Precautionary statements
      P261-P305 + P351 + P338
      Hazard statements
      H315-H319-H335
      Description
      Fluorogenic reagent for analytical the detection of Ag, ClO3-, Cr, Hg, NO2-, NO32-, Ti or CH2O (formaldehyde). Quantitative determination of formaldehyde is based on the specific formation of a red coloration (peaking at 580 nm wavelength) when chromotropic acid in 75% sulfuric acid reacts with formaldehyde. May be employed as a chromogenic reagent for the quantification of dipyrone in various pharmaceutical preparations.
      InChi
      InChI=1S/C10H8O8S2.2Na.2H2O/c11-8-3-6(19(13,14)15)1-5-2-7(20(16,17)18)4-9(12)10(5)8 , /h1-4,11-12H,(H,13,14,15)(H,16,17,18) , 2*1H2/q , 2*+1 , /p-2
      References
      (1) D. Letourneau & N. Krog , Plant Physiol. 27, 822 (1952) , (2) H.B. He, et al. , Talanta 38, 1159 (1991) , (3) B.-L. Poh, et al. , Tetrahedr. Lett. 30, 1005 (1989) , (4) B.K. Pal & K. Baksi , Mikrochim. Acta 108, 275 (1992) , (5) Z. Zhao, et al. , Microchem. J. 58, 1 (1998) , (6) L. Pezza, et al. , Anal. Sci. 16, 313 (2000) , (7) F. Gasparini, et al. , J. Braz. Chem. Soc. 19, 1531 (2008)
      InChi Key
      QUEAKWJKJBFNEG-UHFFFAOYSA-L
      Smiles
      OC1=C(C(O)=CC(S(=O)([O-])=O)=C2)C2=CC(S(=O)([O-])=O)=C1.O.O.[Na+].[Na+]

      Fluorogenic reagent for analytical the detection of Ag, ClO3–, Cr, Hg, NO2–, NO32-, Ti or CH2O (formaldehyde). Quantitative determination of formaldehyde is based on the specific formation of a red coloration (peaking at 580 nm wavelength) when chromotropic acid in 75% sulfuric acid reacts with formaldehyde. May be employed as a chromogenic reagent for the quantification of dipyrone in various pharmaceutical preparations.

      SKU: C0231 Category: Non Fluorescent Detection & Chromogene Detection
      • Additional information

      Additional information

      Synonyms

      1,8-Dihydroxynaphthalene-3,6-disulfonic acid disodium salt, 4,5-Dihydroxynaphthalene-2,7-disulfonic acid disodium salt, Mordant Brown 7 Dihydrate, Chromogen C Dihydrate

      Purity

      ≥99% (T)

      Appearance

      Off-white solid

      CAS-Number

      5808-22-0

      Molecular Formula

      (HO)2C10H4(SO3Na)2·2H2O

      Molecular Weight

      400.29

      Identity

      1H-NMR

      Solvents

      water

      Melting Point

      300°C

      Smiles

      OC1=C(C(O)=CC(S(=O)([O-])=O)=C2)C2=CC(S(=O)([O-])=O)=C1.O.O.[Na+].[Na+]

      InChi Key

      QUEAKWJKJBFNEG-UHFFFAOYSA-L

      Shipping

      AMBIENT

      Short Term Storage

      RT

      Long Term Storage

      RT

      Handling Advice

      Protect from light and moisture.

      Use / Stability

      Stable for at least 2 years after receipt when stored at RT.

      Hazard statements

      H315-H319-H335

      Precautionary statements

      P261-P305 + P351 + P338

      GHS Symbol

      GHS07

      Signal word

      Warning

      Transportation

      Not dangerous goods

      References

      (1) D. Letourneau & N. Krog, Plant Physiol. 27, 822 (1952), (2) H.B. He, et al., Talanta 38, 1159 (1991), (3) B.-L. Poh, et al., Tetrahedr. Lett. 30, 1005 (1989), (4) B.K. Pal & K. Baksi, Mikrochim. Acta 108, 275 (1992), (5) Z. Zhao, et al., Microchem. J. 58, 1 (1998), (6) L. Pezza, et al., Anal. Sci. 16, 313 (2000), (7) F. Gasparini, et al., J. Braz. Chem. Soc. 19, 1531 (2008)

      InChi

      InChI=1S/C10H8O8S2.2Na.2H2O/c11-8-3-6(19(13,14)15)1-5-2-7(20(16,17)18)4-9(12)10(5)8, /h1-4,11-12H,(H,13,14,15)(H,16,17,18), 2*1H2/q, 2*+1, /p-2

      Quantity

      50 g, 250 g, Bulk

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