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
1.05426
Ammonia solution
32%, EMPLURA®
Sinónimos:
Agua amoniacal, Amoníaco acuoso
About This Item
Productos recomendados
Nombre del producto
Hidróxido de amonio solution, EMPLURA®
presión de vapor
837 hPa ( 20 °C)
Nivel de calidad
Línea del producto
EMPLURA®
Formulario
liquid
lim. expl.
27 %
concentración
≥30% (NH3, acidimetric)
impurezas
≤0.0001% Heavy metals (as Pb)
≤0.0005% Fe (Iron)
≤0.0008% Substances reducing potassium permanganate (as O)
≤0.002% Chloride (Cl)
≤0.003% Sulphate (SO?)
residuo de ign.
≤0.003% (as sulphates)
color
APHA: ≤10
bp
37.7 °C/1013 hPa
mp
-91.5 °C
densidad
0.9 g/mL at 25 °C (lit.)
temp. de almacenamiento
2-30°C
cadena SMILES
[NH4+].[OH-]
InChI
1S/H3N.H2O/h1H3;1H2
Clave InChI
VHUUQVKOLVNVRT-UHFFFAOYSA-N
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Categorías relacionadas
Aplicación
- Highly Efficient Recovery of Au(I) from Gold Leaching Solution Using Sodium Dimethyldithiocarbamate.: This study explores the effective recovery of gold using sodium dimethyldithiocarbamate in an ammonia-rich environment, highlighting the interaction with ammonia solution and its impact on the leaching process (Yang et al., 2024).
- Oxidation mechanism of pyrite in a thiosulfate solution: electrochemical impedance (EIS) and in situ Raman spectroscopy.: Explores the oxidation processes of pyrite in thiosulfate solutions facilitated by ammonia, examining the electrochemical properties and kinetics involved in the oxidation mechanism (Tamayo et al., 2023).
Envase
Please note the following replacements:
1054261000 (1 L glass bottle) replaced by 1054261011 (1 L HDPE bottle)
1054262500 (2.5 L glass bottle) replaced by 1054262511 (2.5 L HDPE bottle)
More information about our ergonomic and unbreakable HDPE bottles can be found here: www.SigmaAldrich.com/hdpe-bottle
Nota de análisis
Identity: passes test
Colour: ≤ 10 Hazen
Chloride (Cl): ≤ 0.002 %
Sulphate (SO₄): ≤ 0.003 %
Heavy metals (as Pb): ≤ 0.0001 %
Fe (Iron): ≤ 0.0005 %
Substances reducing potassium permanganate (as O): ≤ 0.0008 %
Residue on ignition (as sulphates): ≤ 0.003 %
Información legal
Palabra de señalización
Danger
Frases de peligro
Consejos de prudencia
Clasificaciones de peligro
Aquatic Acute 1 - Aquatic Chronic 2 - Eye Dam. 1 - Skin Corr. 1B - STOT SE 3
Órganos de actuación
Respiratory system
Código de clase de almacenamiento
8B - Non-combustible, corrosive hazardous materials
Clase de riesgo para el agua (WGK)
WGK 2
Certificados de análisis (COA)
Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»
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Protocolos
A guide to create solvent systems used for the thin-layer chromatography assay of Novabiochem products.
Contenido relacionado
Our ergonomic 1 L HDPE bottle for acids, bases, and solvents provide an alternative to glass chemical bottles for lab safety in pouring & handling of hazardous chemicals in the laboratory.
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How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
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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Is the 32% NH3 concentration expressed as %w/w?
1 answer-
The concentration is expressed as %w/w.
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Is Emplura ammonia solution 32% considered technical grade or higher purity?
1 answer-
This product is considered research grade.
Helpful?
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you say that 28% solution of NH3 is a 56.6% NH4OH for calculating molarity. Can you explain the conversion of 28% to 56.6%? What would be the molarity of a 31% NH3 solution of ammonium hydroxide?
1 answer-
It should be 57.6% NH4OH, not 56.6% NH4OH. Using 17.034 as the molecular weight for NH3 and 35.0494 as the molecular weight weight for NH4OH, the calculation would be: (28 grams NH3/100 grams of solution) X (35.0494 grams NH4OH / 17.034 grams NH3) = 57.6 grams NH4OH per 100 grams of solution, or 57.6%.
To calculate the molarity, the density of a 31% NH3 solution is needed. For the calculation, please note that the weight percentage is for NH3, molecular weight 17.034. (31 grams of NH3 / 100 grams of solution) X (890 grams of solution / Liter of solution) X (1 mole NH3 / 17.034 grams NH3) X (1 mole NH4OH / 1 mole NH3) = 16.2 (16.197) moles NH4OH per Liter. The molarity would be 16.2 M.
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