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221260

Sigma-Aldrich

Ammonium iron(III) sulfate dodecahydrate

ACS reagent, 99%

Synonym(s):

Ammonium ferric sulfate dodecahydrate

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About This Item

Linear Formula:
NH4Fe(SO4)2 · 12H2O
CAS Number:
7783-83-7
Molecular Weight:
482.19
EC Number:
233-382-4
MDL number:
MFCD00150004
UNSPSC Code:
12352302
PubChem Substance ID:
329752253
NACRES:
NB.24
Assay:
98.5-102.0% (ACS specification)
99%
grade:
ACS reagent
form:
crystals
Pricing and availability is not currently available.

grade

ACS reagent

Quality Level

200

Assay

98.5-102.0% (ACS specification)
99%

form

crystals

reaction suitability

reagent type: catalyst
core: iron

impurities

≤0.01% insolubles
≤0.05% not NH4OH pptd.

pH

1 (25 °C, 482.2 g/L)

mp

39-41 °C (lit.)

anion traces

chloride (Cl-): ≤0.001%
nitrate (NO3-): ≤0.01%

cation traces

Cu: ≤0.003%
Fe2+:, passes test (limit about 0.001%)
Zn: ≤0.003%

storage temp.

2-8°C

SMILES string

N.O.O.O.O.O.O.O.O.O.O.O.O.[Fe+3].OS([O-])(=O)=O.[O-]S([O-])(=O)=O

InChI

1S/Fe.H3N.2H2O4S.12H2O/c;;2*1-5(2,3)4;;;;;;;;;;;;/h;1H3;2*(H2,1,2,3,4);12*1H2/q+3;;;;;;;;;;;;;;;/p-3

InChI key

LCPUDZUWZDSKMX-UHFFFAOYSA-K

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Application

Ammonium ferric sulfate dodecahydrate may be used as a catalyst to synthesize:
  • Isoamyl acetate from acetic acid and isoamyl alcohol.[1]
  • 2-Amino-5-(5-nitro-2-thienyl)-1,3,4-thiadiazole from 5-nitrothiophene-2-carboxaldehyde thiosemicarbazone via oxidative cyclization.[2]

Pictograms

Corrosion
GHS05

Signal Word

Danger

Hazard Statements

H318

Precautionary Statements

P280 - P305 + P351 + P338

Hazard Classifications

Eye Dam. 1

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
BCCL7076
BCCK5070
BCCH7624
BCCG4004
BCCF1450

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Study on the Catalytic Synthesis of Isoamyl Acetate Catalyzed by Ammonlum Ferric Sulface Dodecahydrate
Ying Z, et al.
Contemporary Chemical Industry (2006)
Contemporary Chemical Industry null
Antituberculosis agents VIII: Synthesis and in vitro antimycobacterial activity of alkyl a-[5-(5-nitro-2-thienyl)-1, 3, 4-thiadiazole-2-ylthio] acetates.
Foroumadi A, et al.
Il Farmaco (Societa Chimica Italiana : 1989), 58(11), 1073-1076 (2003)
Mossbauer-Effect Study of the Ferroelectric Transitions in Potassium Ferrocyanide Trihydrate and Ferric Ammonium Sulfate Dodecahydrate.
Gleason TG and Walker JC.
Physical Review, 188(2), 893-893 (1969)
Tomasz Kleszczewski et al.
Journal of pharmaceutical and biomedical analysis, 29(4), 755-759 (2002-07-03)
A method for spectrophotometric determination of L-ascorbic acid (vitamin C) in tissues by flow injection analysis is reported. The procedure is based on the oxidation of analyse with iron(III) and 2,2'-dipyridyl. Concentrations of vitamin C in the range of 0.5-20
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Questions

1–2 of 2 Questions  

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

    1 answer

    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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