Skip to Content
Merck

59845

Supelco

Ammonium sulfate

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

Synonym(s):

Mascagnite

Slide 1 of 1
Sign Into View Organizational & Contract Pricing

About This Item

Linear Formula:
(NH4)2SO4
CAS Number:
Molecular Weight:
132.14
EC Number:
MDL number:
UNSPSC Code:
85151701
eCl@ss:
38030408
PubChem Substance ID:
NACRES:
NA.24

Skip To

Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist
Pricing and availability is not currently available.
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

grade

analytical standard

Quality Level

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

Looking for similar products? Visit Product Comparison Guide

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
1.0121731119-M2150-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

ACS reagent, puriss. p.a.

grade

-

assay

≥99.5%

assay

≥99.5% (alkalimetric)

assay

≥99%

assay

-

quality

traceable to NIST SRM 194

quality

-

quality

-

quality

-

shelf life

limited shelf life, expiry date on the label

shelf life

-

shelf life

-

shelf life

-

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.[1]

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

EU REACH Annex XVII (Restriction List)

CAS No.

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

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/449/386/product-dating-information-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?

Reviews

No rating value

Active Filters

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service