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221759

Sigma-Aldrich

Ammonium cerium(IV) sulfate dihydrate

Synonym(s):

Ceric ammonium sulfate, Cerium(IV) ammonium sulfate

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About This Item

Linear Formula:
Ce(NH4)4(SO4)4 · 2H2O
CAS Number:
Molecular Weight:
632.55
MDL number:
UNSPSC Code:
12352302
PubChem Substance ID:
NACRES:
NA.23
grade:
for analytical purposes
form:
powder
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grade

for analytical purposes

Assay

≥94.0% (with KMnO4, redox titration)

form

powder

composition

Ce(IV), ≥20%

reaction suitability

reagent type: catalyst
core: cerium

mp

130 °C (lit.)

SMILES string

N.N.N.N.O.O.[Ce+4].OS([O-])(=O)=O.OS([O-])(=O)=O.OS([O-])(=O)=O.OS([O-])(=O)=O

InChI

1S/Ce.4H3N.4H2O4S.2H2O/c;;;;;4*1-5(2,3)4;;/h;4*1H3;4*(H2,1,2,3,4);2*1H2/q+4;;;;;;;;;;/p-4

InChI key

VCNAMBGKEDPVGQ-UHFFFAOYSA-J

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Application

The product may be used to initiate the radical polymerization of pectin-poly(ethylene glycol) methacrylate (PEGMA) supracmolecular hydrogels.[1] Ammonium cerium sulphate impregnated starch may be carbonized to form cerium dispersed carbon (CeDC) sorbent used for the extraction of excess fluoride in drinking water.[2]

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Cerium dispersed in carbon (CeDC) and its adsorption behavior: A first example of tailored adsorbent for fluoride removal from drinking water
Sivasankar V, et al.
Chemical Engineering Journal, 214, 45-54 (2013)
Thixotropic Supramolecular Pectin-Poly (Ethylene Glycol) Methacrylate (PEGMA) Hydrogels.
Chan SY, et al.
Polymer, 8(11), 404-404 (2016)
K Tsuda et al.
Clinical chemistry, 41(4), 581-585 (1995-04-01)
We have modified an automated measurement system of urinary iodine (UI) and established a sensitive UI assay system by using ultraviolet (UV) digestion. The automated system is sensitive enough to detect concentrations of UI < 0.78 mumol/L (< 10 micrograms/dL)
Effect of high room temperature on urinary iodine assay.
N T Dung et al.
Clinical chemistry, 43(6 Pt 1), 1084-1085 (1997-06-01)
Babu G Gowda et al.
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, 18(6), 671-674 (2002-06-27)
Two simple and sensitive indirect spectrophotometric methods for the assay of propranolol hydrochloride (PPH) and piroxicam (PX) in pure and pharmaceutical formulations have been proposed. The methods are based on the oxidation of PPH by a known excess of standard

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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

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    1. 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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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. 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/449/386/product-dating-information-mk.pdf

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