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
1.06076
Methylrot (C.I. 13020)
pH indicator, ACS, Reag. Ph Eur
Synonym(e):
Methylrot (C.I. 13020), 4-Dimethylaminoazobenzen-2′-carboxylsäure
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64,70 €
226,00 €
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Produktname
Methylrot (C.I. 13020), indicator ACS,Reag. Ph Eur
Qualität
ACS reagent
Qualitätsniveau
Agentur
reag. Ph. Eur.
suitable for SM 4500 - NH3
Form
powder
solid
Verlust
≤5% loss on drying, 110°C
Farbe
red to red-violet
visual transition interval
4.4-6.0, red to yellow
mp (Schmelzpunkt)
178-182 °C
Schüttdichte
300‑500 kg/m3
Amax
427-437 nm (buffer pH 6.2)
523-526 nm (buffer pH 4.5)
Lagertemp.
2-30°C
SMILES String
N(C)(C)c1ccc(cc1)N=Nc2c(cccc2)C(=O)O
InChI
1S/C15H15N3O2/c1-18(2)12-9-7-11(8-10-12)16-17-14-6-4-3-5-13(14)15(19)20/h3-10H,1-2H3,(H,19,20)
InChIKey
CEQFOVLGLXCDCX-UHFFFAOYSA-N
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Dieser Artikel | 250198 | 08714 | 1.06078 |
|---|---|---|---|
| grade ACS reagent | grade ACS reagent | grade - | grade ACS reagent |
| agency reag. Ph. Eur. | agency - | agency according to GB 4789.30-2016, according to ISO 22964:2017 | agency - |
| form powder | form crystalline | form - | form solid |
| loss ≤5% loss on drying, 110°C | loss - | loss - | loss ≤5% loss on drying, 110°C |
| color red to red-violet | color - | color - | color - |
| visual transition interval 4.4-6.0, red to yellow | visual transition interval 4.2-6.2, pink to yellow | visual transition interval - | visual transition interval - |
Hinweis zur Analyse
Aussehen: Rotes bis rötlich-violettes Pulver, am Ende mit Granulatteilchen.
Klarheit der Lösung (1 g/l; Ethanol): entspricht
Schmelzpunkt (Kapillarmethode, Temperaturmessung im Heizblock): 179–182 °C
Übergangsbereich: pH 4,4 – pH 6,0 Rot – Gelb
Maximale Absorption (Puffer pH 4,5): 523–526 nm
Maximale Absorption (Puffer pH 6,2): 427–437 nm
Spez. Absorptionsgrad A 1 %/1 cm (λmax.; 0,005 g/l; Puffer pH 4,5; berechnet auf wasserfreie Substanz): 1350–1500 nm
Spez. Absorptionsgrad A 1 %/1 cm (λmax.; 0,005 g/l; Puffer pH 6,2; berechnet auf wasserfreie Substanz): 700–800
Übergangsbereich (gemäß ACS): entspricht
Trocknungsverlust (110 °C): ≤ 5 %
Lagerklassenschlüssel
11 - Combustible Solids
WGK
WGK 2
Flammpunkt (°F)
Not applicable
Flammpunkt (°C)
Not applicable
Analysenzertifikate (COA)
Suchen Sie nach Analysenzertifikate (COA), indem Sie die Lot-/Chargennummer des Produkts eingeben. Lot- und Chargennummern sind auf dem Produktetikett hinter den Wörtern ‘Lot’ oder ‘Batch’ (Lot oder Charge) zu finden.
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Verwandter Inhalt
This page is intended to make it easier to find the consumables you need based on the analytical method you’re using. Methods included on this page come from the EPA, Standard Methods and ASTM.
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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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