A2291412
Calconcarboxylic acid , Indicator , 3737-95-9
Synonym(s):
2-Hydroxy-1-(2-hydroxy-4-sulfo-1-naphthylazo)-3-naphthoic acid;3-Hydroxy-4-(2-hydroxy-4-sulfo-1-naphthylazo)naphthalene-2-carboxylic acid;Patton and Reeder’s reagent
CAS NO.：3737-95-9
Empirical Formula: C21H14N2O7S
Molecular Weight: 438.41
MDL number: MFCD00004078
EINECS: 223-117-0
| Pack Size | Price | Stock | Quantity |
| 25G | RMB33.60 | In Stock |
|
| 100G | RMB127.20 | In Stock |
|
| others | Enquire |
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | 300 °C(lit.) |
| Density | 1.60±0.1 g/cm3(Predicted) |
| bulk density | 400kg/m3 |
| storage temp. | room temp |
| solubility | 1 M NaOH: 10mg/mL |
| form | Powder |
| pka | -0.50±0.40(Predicted) |
| color | Very dark purple to black |
| Odor | Odorless |
| Water Solubility | slightly soluble |
| BRN | 727492 |
| Stability: | Stable. Incompatible with strong oxidizing agents. |
| CAS DataBase Reference | 3737-95-9(CAS DataBase Reference) |
| EPA Substance Registry System | 2-Naphthalenecarboxylic acid, 3-hydroxy-4-[(2-hydroxy-4-sulfo-1-naphthalenyl)azo]- (3737-95-9) |
Description and Uses
Calconcarboxylic acid is used as an indicator for calcium titrations with ethylenediaminetetraacetic acid (EDTA) in the presence of magnesium.
Safety
| Symbol(GHS) |  GHS07 |
| Signal word | Warning |
| Hazard statements | H315-H319-H335 |
| Precautionary statements | P261-P264-P271-P280-P302+P352-P305+P351+P338 |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36-37/39 |
| WGK Germany | 3 |
| TSCA | Yes |
| HS Code | 29270000 |
