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
1.59270
Methylene blue (C.I. 52015)
redox indicator, Reag. Ph Eur
Synonyme(s) :
Methylene Blue trihydrate, Methylthioninium chloride, 3,7-Bis(dimethylamino)phenothiazinium chloride, Tetramethylthionine chloride
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| Taille/Référence | Disponibilité | Prix |
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A propos de cet article
Nom du produit
Methylene blue (C.I. 52015), Reag. Ph Eur
Quality Segment
agency
reag. Ph. Eur., suitable for SM 4500 - NH3
form
powder
potency
1180 mg/kg LD50, oral (Rat)
loss
10-15% loss on drying, 110 °C
color
dark green
pH
3 (20 °C, 10 g/L in H2O)
mp
190 °C (dec.) (lit.)
solubility
50 g/L
bulk density
400‑600 kg/m3
λmax
660-665 nm at 50% in ethanol
storage temp.
2-30°C
SMILES string
[Cl-].CN(C)c1ccc2N=C3C=C\C(C=C3Sc2c1)=[N+](/C)C
InChI
1S/C16H18N3S.ClH/c1-18(2)11-5-7-13-15(9-11)20-16-10-12(19(3)4)6-8-14(16)17-13;/h5-10H,1-4H3;1H/q+1;/p-1
InChI key
CXKWCBBOMKCUKX-UHFFFAOYSA-M
Analysis Note
Identity (UV/VIS-Spectrum): passes test
Absorption maximum λmax. (ethanol 50 %): 660 - 665 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.003 g/l; ethanol 50 %): 2250 - 2750
Loss on drying (110 °C): 10 - 15 %
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Mot-clé
Warning
Codes de danger
Mentions de précaution
Hazard Classifications
Acute Tox. 4 Oral
Classe de stockage
11 - Combustible Solids
Point d'éclair (°F)
Not applicable
Point d'éclair (°C)
Not applicable
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How can I determine the shelf life / expiration / retest date of this product?
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Is there any data of chemical purity for this reagent? The only purity factor I can deduce from CoA is 100-LOD but I am wondering if there's an chromatographic purity somewhere.
1 answer-
The purity of this product is not determined. Please see the link below to review product M9140, Methylene Blue, which has a minimum dye content of 82%.
https://www.sigmaaldrich.com/product/sial/m9140Helpful?
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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
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İs this product Pharmagrade,Usp certificiate? Use for human oraly.?
1 answer-
This product is not a pharmaceutical grade product and is not suitable for human or animal use. Unfortunately, a pharmaceutical grade methylene blue is not currently offered.
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