A7356112
Sulfanilic acid azochromotrop , AR , 23647-14-5
Synonym(s):
1,8-Dihydroxy-2-(4-sulfophenylazo)naphthalene-3,6- disulfonic acid trisodium salt;1,8-Dihydroxy-2-(4-sulfophenylazo)naphthalene-3,6-disulfonic acid trisodium salt;2-(4-Sulfophenylazo)-1,8-dihydroxy-3,6-naphthalene disulfonic acid trisodium salt;2-(4-Sulfophenylazo)chromotropic acid trisodium salt;SPADNS
CAS NO.：23647-14-5
Empirical Formula: C16H13N2NaO11S3
Molecular Weight: 528.45
MDL number: MFCD00003952
EINECS: 245-803-9
| Pack Size | Price | Stock | Quantity |
| 5G | RMB100.80 | In Stock |
|
| 25G | RMB267.20 | In Stock |
|
| others | Enquire |
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | >300°C |
| bulk density | 810kg/m3 |
| storage temp. | Store at +15°C to +25°C. |
| solubility | 220g/l |
| form | Crystalline Powder |
| color | Dark red-brown |
| PH | 6.0 (10g/l, H2O, 22℃) |
| Water Solubility | Soluble in water (10 mg/ml), and ethanol (1 mg/ml). very slightly soluble or insoluble in alcohol and organic solvents. |
| λmax | 505-510 nm |
| EPA Substance Registry System | 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-[(4-sulfophenyl)azo]-, trisodium salt (23647-14-5) |
Description and Uses
Sulfanilic acid azochromotrop is used as an indicator for complexometric determinations of zirconium and thorium. It is used as a reagent for drinking and wastewater analysis using Hach Method 8029, Fluoride, SPADNS Method.
Safety
| Symbol(GHS) |  GHS07 |
| Signal word | Warning |
| Hazard statements | H315-H319-H335 |
| Precautionary statements | P261-P280a-P304+P340-P305+P351+P338-P405-P501a-P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313 |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36 |
| WGK Germany | 3 |
| TSCA | Yes |
| HS Code | 2927 00 00 |
