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
209198
Copper(II) sulfate pentahydrate
ACS reagent, ≥98.0%
Sinónimos:
Cupric sulfate pentahydrate, Sulfuric acid, copper(II) salt (1:1) pentahydrate
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Acerca de este artículo
98.0-102.0% (ACS specification)
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grade
ACS reagent
Quality Level
vapor pressure
7.3 mmHg ( 25 °C)
assay
≥98.0%
98.0-102.0% (ACS specification)
form
crystals
reaction suitability
reaction type: click chemistry
reagent type: catalyst
core: copper
pH
3.5-4.5 (20 °C, 50 g/L)
mp
110 °C (dec.) (lit.)
anion traces
chloride (Cl-): ≤0.001%
cation traces
Ca: ≤0.005%
Fe: ≤0.003%
K: ≤0.01%
Na: ≤0.02%
Ni: ≤0.005%
SMILES string
O.O.O.O.O.[Cu++].[O-]S([O-])(=O)=O
InChI
1S/Cu.H2O4S.5H2O/c;1-5(2,3)4;;;;;/h;(H2,1,2,3,4);5*1H2/q+2;;;;;;/p-2
InChI key
JZCCFEFSEZPSOG-UHFFFAOYSA-L
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Este artículo | C7631 | 31293 | 12849 |
|---|---|---|---|
| form crystals | form powder or crystals | form solid | form crystals |
| assay ≥98.0%, 98.0-102.0% (ACS specification) | assay ≥98.0% | assay 99-102% | assay 98.5-100.5% (USP) |
| Quality Level 200 | Quality Level 100 | Quality Level 200 | Quality Level 200 |
| grade ACS reagent | grade - | grade ACS reagent, puriss. p.a. | grade - |
| pH 3.5-4.5 (20 °C, 50 g/L) | pH 3.7-4.5 (25 °C, 50 g/L) | pH 3.7-4.5 (20 °C, 5%) | pH 3.5-4.5 (20 °C, 50 g/L) |
| anion traces chloride (Cl-): ≤0.001% | anion traces - | anion traces chloride (Cl-): ≤10 mg/kg | anion traces chloride (Cl-): ≤100 mg/kg |
General description
Application
- In acetylation of alcohols and phenols in the presence of acetic anhydride.
- To synthesize various ynamides via intramolecular coupling of amides with alkynyl bromides.
It can also be used as a template in the synthesis of copper(II) ion-imprinted polymers using vinylpyridine and methacrylic acid as functional monomers. This polymer is used to quantify Cu2+ ion by using flame atomic absorption spectroscopy.
Features and Benefits
signalword
Danger
hcodes
Hazard Classifications
Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1
Clase de almacenamiento
13 - Non Combustible Solids
wgk_germany
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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
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