If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
1.08087
Potassium sodium tartrate tetrahydrate
for analysis EMSURE® ACS,ISO,Reag. Ph Eur
Synonym(s):
Potassium sodium tartrate tetrahydrate, Sodium potassium tartrate, Tartaric acid potassium sodium salt
Select a Size
| Pack Size | SKU | Availability | Price |
|---|
About This Item
grade
ACS reagent
Quality Level
agency
reag. ISO, reag. Ph. Eur., suitable for SM 4500 - NH3
product line
EMSURE®
assay
99.0-102.0% (alkalimetric)
form
solid
impurities
≤0.005% Insoluble matter
pH
7.0-8.5 (25 °C, 50 g/L in H2O)
mp
70-80 °C
bulk density
1000 kg/m3
anion traces
chloride (Cl-): ≤0.0005%, phosphate (PO43-): ≤0.001%, sulfate (SO42-): ≤0.005%
cation traces
Ca: ≤0.004%, Cu: ≤0.0005%, Fe: ≤0.0005%, NH4+: ≤0.002%, Pb: ≤0.0005%, heavy metals: ≤0.0005% ((ACS) )
storage temp.
2-30°C
SMILES string
[K+].[Na+].[O-]C(=O)[C@H](O)[C@@H](O)C(=O)[O-].O.O.O.O
InChI
1S/C4H6O6.K.Na.4H2O/c5-1(3(7)8)2(6)4(9)10;;;;;;/h1-2,5-6H,(H,7,8)(H,9,10);;;4*1H2/q;2*+1;;;;/p-2/t1-,2-;;;;;;/m1....../s1
InChI key
VZOPRCCTKLAGPN-ZFJVMAEJSA-L
Application
- Reducing agent in the preparation of monodispersed gold nanoparticles.
- Key component in the preparation of Fehling′s solution, which is used to distinguish between reducing and non-reducing sugars.
- Chelating agent to prepare Co-Ni-P/Pd-Al2O3 catalyst through electroless deposition method.
Analysis Note
Insoluble matter: ≤ 0.005 %
pH-value (5 %; water; 25 °C): 7.0 - 8.5
Chloride (Cl): ≤ 0.0005 %
Phosphate (PO₄): ≤ 0.001 %
Sulfate (SO₄): ≤ 0.005 %
heavy metals (ACS) ≤ 0.0005%
Ca (Calcium): ≤ 0.004 %
Cu (Copper): ≤ 0.0005 %
Fe (Iron): ≤ 0.0005 %
NH₄ (Ammonium): ≤ 0.002 %
Pb (Lead): ≤ 0.0005 %
Corresponds to ACS,ISO,Reag. Ph Eur
Other Notes
Legal Information
1 of 1
This Item | |||
|---|---|---|---|
| form solid | form - | form crystalline | form solid |
| assay 99.0-102.0% (alkalimetric) | assay ≥99.5% (perchloric acid titration) | assay ≥99% | assay 99.0-101.0% (calc. on H2O free substance) |
| Quality Level 300 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| grade ACS reagent | grade ACS reagent, puriss. p.a. | grade - | grade - |
| anion traces chloride (Cl-): ≤0.0005%, sulfate (SO42-): ≤0.005%, phosphate (PO43-): ≤0.001% | anion traces chloride (Cl-): ≤5 mg/kg, phosphate (PO43-): ≤10 mg/kg, sulfate (SO42-): ≤50 mg/kg | anion traces - | anion traces chloride (Cl-): ≤20 mg/kg, sulfate (SO42-): ≤50 mg/kg |
| cation traces Cu: ≤0.0005%, NH4+: ≤0.002%, heavy metals (as Pb): ≤0.0005%, Ca: ≤0.004%, Pb: ≤0.0005%, Fe: ≤0.0005% | cation traces Ca: ≤40 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, Pb: ≤2 mg/kg, Zn: ≤5 mg/kg | cation traces - | cation traces As: ≤1 mg/kg, Ba:, in accordance, Ca: ≤50 mg/kg, Cu: ≤10 mg/kg, Fe: ≤10 mg/kg, Hg: ≤1 mg/kg, Pb: ≤2 mg/kg, Zn: ≤10 mg/kg |
Still not finding the right product?
Explore all of our products under Potassium sodium tartrate tetrahydrate
Storage Class
11 - Combustible Solids
wgk
WGK 1
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.
Protocols
The article describes the sample preparation and photometric determination of silver concentration in water samples using Spectroquant® photometers and test kits.
Related Content
This page is intended to make it easier to find the consumables you need based on the analytical method you’re using. Methods included on this page come from the EPA, Standard Methods and ASTM.
Global Trade Item Number
| SKU | GTIN |
|---|---|
| 41090-5ML | 04061832019659 |
| D173401-5G | 04061833560556 |
| D173401-25G | 04061833560549 |
| 1080870500 | 04022536099958 |
| 1080875000 | 04022536099996 |
| 1080879050 | 04022536100005 |
| 1080871000 | 04022536099972 |
| 1080879012 | 04054839514654 |
-
How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
-
-
How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
Helpful?
-