1.08294
Thorin
indicator for sulfate titration
Synonym(s):
Thorin, 1-(2-Arsonophenylazo)-2-hydroxy-3,6-naphthalene-disulfonic acid sodium salt, 2-(2-Hydroxy-3,6-disulfo-1-naphthylazo)-benzene-arsonic acid sodium salt
Select a Size
About This Item
Product Name
Thorin, indicator for sulfate titration
Quality Level
form
solid
impurities
≤25% Water (Karl Fischer)
pH
6.1 (20 °C, 10 g/L in H2O)
bulk density
700 kg/m3
λmax
480-490 nm (propan-2-ol)
storage temp.
2-30°C
SMILES string
[As](=O)([O-])([O-])c1c(cccc1)N\N=C2/c3c(cc(cc3)[S](=O)(=O)O)C=C(C/2=O)[S](=O)(=O)O.[Na+].[Na+]
InChI
1S/C16H13AsN2O10S2.2Na/c20-16-14(31(27,28)29)8-9-7-10(30(24,25)26)5-6-11(9)15(16)19-18-13-4-2-1-3-12(13)17(21,22)23;;/h1-8,18H,(H2,21,22,23)(H,24,25,26)(H,27,28,29);;/q;2*+1/p-2/b19-15+;;
InChI key
ZQMPNLOZJUWHSA-WTBAQZMLSA-L
Related Categories
1 of 4
This Item | 1.07998 | 1.02498 | 1.04594 |
|---|---|---|---|
| form solid | form - | form solid | form solid |
| impurities ≤25% Water (Karl Fischer) | impurities - | impurities - | impurities - |
| pH 6.1 (20 °C, 10 g/L in H2O) | pH 6.0 (22 °C, 10 g/L in H2O) | pH 3.6 (20 °C, 10 g/L in H2O) | pH 9.4 (25 °C, 10 g/L in H2O) |
| bulk density 700 kg/m3 | bulk density 810 kg/m3 | bulk density 780 kg/m3 | bulk density 530 kg/m3 |
| λmax 480-490 nm (propan-2-ol) | λmax - | λmax - | λmax 634-640 nm (buffer pH 12.2) |
| storage temp. 2-30°C | storage temp. 15-25°C | storage temp. 2-30°C | storage temp. 2-30°C |
Analysis Note
Absorption maximum λmax. (Propan-2-ol): 480 - 490 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.025 g/l;propan-2-ol; calc. on anhydrous substance): 250 - 350
Water (according to Karl Fischer): ≤ 25 %
Suitability as indicator (for sulfate titration): passes test
signalword
Danger
hcodes
Hazard Classifications
Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1
Storage Class
6.1A - Combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials
wgk_germany
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
Already Own This Product?
Find documentation for the products that you have recently purchased in the Document Library.
Active Filters
Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.
Contact Technical Service
