?? ?????
|
|
?? ????? ??
- ???
- 300 °C(lit.)
- ??
- 1.60±0.1 g/cm3(Predicted)
- ?? ??
- 400kg/m3
- ?? ??
- room temp
- ???
- 1 M NaOH: 10mg/mL
- ??? ??
- ??
- ?? ?? (pKa)
- -0.50±0.40(Predicted)
- ??
- ?? ??? ????? ?????
- ??
- ?? ??
- ???
- ?? ???
- BRN
- 727492
- ???
- ????. ?? ???? ???? ????.
- ?? ??
- ?? ?? ??
???
???
- InChI
- 1S/C21H14N2O7S/c24-16-10-17(31(28,29)30)13-7-3-4-8-14(13)18(16)22-23-19-12-6-2-1-5-11(12)9-15(20(19)25)21(26)27/h1-10,24-25H,(H,26,27)(H,28,29,30)/b23-22-
- InChIKey
- MVQBFZXBLLMXGS-FCQUAONHSA-N
- SMILES
- OC(=O)c1cc2ccccc2c(N=Nc3c(O)cc(c4ccccc34)S(O)(=O)=O)c1O
- CAS ??????
- 3737-95-9(CAS DataBase Reference)
??
- ?? ? ?? ??
- ?? ? ???? ?? (GHS)
| ??? ?? | Xi | ||
|---|---|---|---|
| ?? ???? ?? | 36/37/38 | ||
| ????? | 26-36-37/39 | ||
| WGK ?? | 3 | ||
| TSCA | TSCA listed | ||
| HS ?? | 29270000 | ||
| ???? ??? | 11 - Combustible Solids | ||
| Hazard Classifications | Eye Irrit. 2 Skin Irrit. 2 STOT SE 3 |
?? ????? C??? ??, ??, ??
??? ??
dark violet powder??
Calconcarboxylic acid is used as an indicator for calcium titrations with ethylenediaminetetraacetic acid (EDTA) in the presence of magnesium.Purification Methods
Purify it via its p-toluidinium salt, viz: dissolve the dye in warm 20% aqueous MeOH, treat with an equivalent of p-toluidine and cool to precipitate the salt. Finally recrystallise the acid from hot water. [Itoh & Ueno Analyst (London) 95 583 1970.] It is an indicator and complexes with Ca2+ in presence of Mg2+ and other metal ions [Patton & Reeder Anal Chem 28 1026 1956, Prentoe & Prentoe Analyst 106 227 1981].?? ????? ?? ?? ? ???
???
?? ??
?? ????? ?? ??
???( 376)?? ??
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|---|---|---|---|---|---|
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