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1914-99-4

1914-99-4 structure
1914-99-4 structure
  • Name: chlorophosphonazo iii
  • Chemical Name: 3,6-bis[(4-chloro-2-phosphonophenyl)hydrazinylidene]-4,5-dioxonaphthalene-2,7-disulfonic acid
  • CAS Number: 1914-99-4
  • Molecular Formula: C22H16Cl2N4O14P2S2
  • Molecular Weight: 757.364
  • Catalog: analytical chemistry Standard Spectrometric standard
  • Create Date: 2018-03-08 08:00:00
  • Modify Date: 2024-01-05 17:04:41
  • Chlorophosphonazo III is a sensitive reagent for both calcium and magnesium. It is possible to determine calcium alone at pH 2.2 and calcium and magnesium at pH 7.0. Chlorophosphonazo III can also be used for the spectrophotometric determination of titanium, zirconium, thorium, and scandium, quinquevalent actinide elements, and protactinium[1].

Name 3,6-bis[(4-chloro-2-phosphonophenyl)hydrazinylidene]-4,5-dioxonaphthalene-2,7-disulfonic acid
Synonyms 2,7-Bis-<4-chlor-2-phospheno-benzalazo>-1,8-dihydroxy-naphthalin-3,6-disulfonsaeure
2,7-Naphthalenedisulfonic acid, 3,6-bis[(E)-2-(4-chloro-2-phosphonophenyl)diazenyl]-4,5-dihydroxy-
2,7-Naphthalenedisulfonic acid, 3,6-bis((4-chloro-2-phosphonophenyl)azo)-4,5-dihydroxy-
2,7-Bis(4-chloro-2-phosphonophenylazo)-1,8-dihydroxy-3,6-naphthalenedisulfonicacid
dichlorophosphonoazo III
3,6-Bis((4-chloro-2-phosphonophenyl)azo)-4,5-dihydroxynaphthalene-2,7-disulphonic acid
disodiumsalt
3,6-Bis[(E)-(4-chloro-2-phosphonophenyl)diazenyl]-4,5-dihydroxy-2,7-naphthalenedisulfonic acid
Chlorophosphonazo III
EINECS 217-628-8
MFCD00042698
Description Chlorophosphonazo III is a sensitive reagent for both calcium and magnesium. It is possible to determine calcium alone at pH 2.2 and calcium and magnesium at pH 7.0. Chlorophosphonazo III can also be used for the spectrophotometric determination of titanium, zirconium, thorium, and scandium, quinquevalent actinide elements, and protactinium[1].
Related Catalog
References

[1]. Ferguson J W, et al. Simultaneous spectrophotometric determination of calcium and magnesium with chlorophosphonazo III. Analytical Chemistry, 1964, 36(4): 796-799.

Density 2.1±0.1 g/cm3
Molecular Formula C22H16Cl2N4O14P2S2
Molecular Weight 757.364
Exact Mass 755.895691
PSA 350.08000
LogP -2.70
Index of Refraction 1.811
Personal Protective Equipment Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
Hazard Codes Xn
Safety Phrases S22-S24/25
RIDADR NONH for all modes of transport
WGK Germany 3