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59845

Ammoniumsulfat

analytical standard, for Nitrogen Determination According to Kjeldahl Method, traceable to NIST SRM 194

Synonym(e):

Mascagnit

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PackungsgrößeSKUVerfügbarkeitPreis
25 g
Warenkorb auf Verfügbarkeit prüfen
€ 60,60

Über diesen Artikel

Lineare Formel:
(NH4)2SO4
CAS-Nummer:
Molekulargewicht:
132.14
PubChem Substance ID:
eCl@ss:
38030408
UNSPSC Code:
85151701
NACRES:
NA.24
EC Number:
231-984-1
MDL number:

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grade

analytical standard

Quality Segment

assay

≥99.5%

quality

traceable to NIST SRM 194

shelf life

limited shelf life, expiry date on the label

impurities

21.20%±0.10% total Kjeldahl nitrogen

loss

≤0.1% loss on drying, 110°C

pH

5.0-6.0 (25 °C, 1 M in H2O)

mp

>280 °C (dec.) (lit.)

solubility

soluble, clear, colorless

density

1.77 g/mL at 25 °C (lit.)

format

neat

SMILES string

N.N.OS(O)(=O)=O

InChI

1S/2H3N.H2O4S/c;;1-5(2,3)4/h2*1H3;(H2,1,2,3,4)

InChI key

BFNBIHQBYMNNAN-UHFFFAOYSA-N

Application

Ammonium sulfate may be used as a standard solution to determine nitrogen loss in the Kjeldahl analysis which acts as a reference method to determine accurate protein content in dairy products.

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Dieser Artikel
1.012171.041612150-OP
format

neat

format

-

format

-

format

-

mp

>280 °C (dec.) (lit.)

mp

>280 °C (dec.) (lit.)

mp

>280 °C (dec.) (lit.)

mp

>280 °C (dec.) (lit.)

grade

analytical standard

grade

ACS reagent

grade

GMO free, Halal, Kosher

grade

reagent grade

assay

≥99.5%

assay

≥99.5% (alkalimetric)

assay

-

assay

-

loss

≤0.1% loss on drying, 110°C

loss

≤0.1% loss on drying, 105 °C

loss

-

loss

-

shelf life

limited shelf life, expiry date on the label

shelf life

-

shelf life

-

shelf life

-


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Lagerklasse

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


Zulassungslistungen

Zulassungslistungen werden hauptsächlich für chemische Produkte erstellt. Für nicht-chemische Produkte können hier nur begrenzte Angaben gemacht werden. Kein Eintrag bedeutet, dass keine der Komponenten gelistet ist. Es liegt in der Verantwortung des Benutzers, die sichere und legale Verwendung des Produkts zu gewährleisten.

7783-20-2

CAS No.


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Analysenzertifikate (COA)

Lot/Batch Number

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Die Dokumentenbibliothek aufrufen



Goding.WJ
Monoclonal Antibodies: Principles and Practice, (3) (1996)
Simon Gareth Broadley et al.
Acta crystallographica. Section D, Biological crystallography, 68(Pt 11), 1450-1459 (2012-10-24)
MshB, a zinc-based deacetylase, catalyses a step in the mycothiol biosynthetic pathway that involves the deacetylation of 1-O-(2-acetamido-2-deoxy-α-D-glucopyranosyl)-D-myo-inositol (GlcNAc-Ins), via cleavage of an amide bond, to 1-O-(2-amino-2-deoxy-α-D-glucopyranosyl)-D-myo-inositol (GlcN-Ins) and acetate. In this study, MshB was expressed, purified and crystallized. A
James F Hunter et al.
Environmental science & technology, 48(17), 10227-10234 (2014-08-06)
A large number of organic species emitted into the atmosphere contain cycloalkyl groups. While cyclic species are believed to be important secondary organic aerosol (SOA) precursors, the specific role of cyclic moieties (particularly for species with multiple or fused rings)



Global Trade Item Number

SKUGTIN
59845-25G04061835561025

Questions

1–2 of 2 Questions  
  1. 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/418/501/product-dating-information-06-25-mk.pdf

      Helpful?

  2. 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

      Helpful?

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