1.02498
Chromotropic acid disodium salt dihydrate
for analysis ACS,Reag. Ph Eur
Synonym(s):
Chromotropic acid disodium salt dihydrate, 4,5-Dihydroxy-2,7-naphthalene disulfonic acid sodium salt
Select a Size
| Pack Size | SKU | Availability | Price |
|---|---|---|---|
| 25 g | Estimated to ship onJune 26, 2026 | $326.00 |
About This Item
grade
ACS reagent
Quality Level
agency
reag. Ph. Eur.
assay
≥98.5% (acidimetric)
form
solid
composition
Water, 8.5-9.5% Karl Fischer
color
gray-white to brownish white
pH
3.6 (20 °C, 10 g/L in H2O)
mp
>300 °C
bulk density
780 kg/m3
storage temp.
2-30°C
SMILES string
[S](=O)(=O)(O)c1cc2c(c(c1)[O-])c(cc(c2)[S](=O)(=O)O)[O-]
InChI
1S/C10H8O8S2/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)/p-2
InChI key
HLVXFWDLRHCZEI-UHFFFAOYSA-L
Analysis Note
Assay (acidimetric, calc. on anhydrous substance): ≥ 98.5 %
Identity (IR-spectrum): passes test
Appearance of solution (5 %; water): passes test
Water (according to Karl Fischer): 8.5 - 9.5 %
Sensitivity (of formaldehyde): passes test
Sensitivity (of nitrate): passes test
Other Notes
1 of 1
This Item | |||
|---|---|---|---|
| mp >300 °C | mp >300 °C (lit.) | mp >300 °C (lit.) | mp 300 °C |
| pH 3.6 (20 °C, 10 g/L in H2O) | pH - | pH - | pH 5.0 (20 °C, 10 g/L in H2O) |
| agency reag. Ph. Eur. | agency - | agency - | agency - |
| color gray-white to brownish white | color - | color - | color - |
| assay ≥98.5% (acidimetric) | assay ≥95.0% | assay ≥78.5% | assay - |
| composition Water, 8.5-9.5% Karl Fischer | composition - | composition - | composition Water, 4.5-6.5% Karl Fischer |
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signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
target_organs
Respiratory system
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
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Global Trade Item Number
| SKU | GTIN |
|---|---|
| D58600-5G | 04061836824686 |
| D58600-25G | 04061833586921 |
| 1024989999 | 04022536510170 |
| 1024980025 | 04022536034027 |
| 1024988888 | 04061838825377 |