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Sigma-Aldrich

Ammonia solution

2.0 M in methanol

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100 ML
$109.00
800 ML
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4 X 100 ML
$372.00
2 L
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About This Item

Linear Formula:
NH3
CAS Number:
7664-41-7
Molecular Weight:
17.03
MDL number:
MFCD00011418
UNSPSC Code:
12352300
PubChem Substance ID:
329754843
NACRES:
NA.55

$109.00

Available to ship onMay 13, 2025Details

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form

liquid

Quality Level

200

concentration

1.90-2.20 M (with NaOH, titration)
2.0 M in methanol

density

0.787 g/mL at 25 °C

SMILES string

N

InChI

1S/H3N/h1H3

InChI key

QGZKDVFQNNGYKY-UHFFFAOYSA-N

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Application

Ammonia solution 25% can be used:
  • As a pH-adjusting agent to ensure beneficial alkaline conditions.
  • To prepare diammine silver(I) chloride complex by using silver chloride precipitate.
  • To prepare colloidal inks.

signalword

Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 3 - Eye Dam. 1 - Flam. Liq. 2 - Skin Irrit. 2 - STOT SE 1

target_organs

Eyes,Central nervous system

Storage Class

3 - Flammable liquids

wgk_germany

WGK 2

flash_point_f

42.8 °F - closed cup

flash_point_c

6 °C - closed cup

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Certificates of Analysis (COA)

Lot/Batch Number
SHBS3989
SHBM6851
SHBM3641
STBG4780V
SHBG6064V

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Patrick M Erwin et al.
The ISME journal, 8(3), 575-588 (2013-10-25)
Ascidians are ecologically important components of marine ecosystems yet the ascidian microbiota remains largely unexplored beyond a few model species. We used 16S rRNA gene tag pyrosequencing to provide a comprehensive characterization of microbial symbionts in the tunic of 42
Hiroo Iwata et al.
Clinical pharmacokinetics, 43(4), 211-225 (2004-03-10)
We consider the pharmacokinetics of bioartificial livers (BALs) prepared using a hollow fibre module with respect to two key functions, detoxification and plasma protein supply, and present the results in a simple form. We then discuss the advantages and disadvantages
Olivier Braissant et al.
Journal of inherited metabolic disease, 36(4), 595-612 (2012-10-31)
Hyperammonemia can be caused by various acquired or inherited disorders such as urea cycle defects. The brain is much more susceptible to the deleterious effects of ammonium in childhood than in adulthood. Hyperammonemia provokes irreversible damage to the developing central
Patricia A Wright et al.
Respiratory physiology & neurobiology, 184(3), 231-240 (2012-08-23)
In this review we pose the following seven questions related to ammonia and fish that represent gaps in our knowledge. 1. How is ammonia excretion linked to sodium uptake in freshwater fish? 2. How much does branchial ammonia excretion in
David A Stahl et al.
Annual review of microbiology, 66, 83-101 (2012-09-22)
The discovery of ammonia-oxidizing archaea (AOA), now generally recognized to exert primary control over ammonia oxidation in terrestrial, marine, and geothermal habitats, necessitates a reassessment of the nitrogen cycle. In particular, the unusually high affinity of marine and terrestrial AOA
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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

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  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

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