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
1.03170
Eriochrome black T (C.I. 14645)
metal indicator, ACS, Reag. Ph Eur
Synonyme(s) :
Eriochrome black T (C.I. 14645), Chrome black T, 2-Hydroxy-1-(1-hydroxy-2-naphthylazo)-6-nitronaphthalene-4-sulfonic acid sodium salt
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| Conditionnement | Référence | Disponibilité | Prix |
|---|
A propos de cet article
Nom du produit
Eriochrome black T (C.I. 14645), indicator for complexometry ACS,Reag. Ph Eur
grade
ACS reagent
Quality Segment
agency
reag. Ph. Eur.
form
powder
potency
17590 mg/kg LD50, oral (Rat)
loss
≤7% loss on drying, 110°C
color
black to dark brown
pH
3.7 (20 °C, 10 g/L in H2O)
solubility
50 g/L
bulk density
400‑600 kg/m3
λmax
612-616 nm (buffer pH 10.0)
storage temp.
15-25°C
SMILES string
[Na+].[S](=O)(=O)(O)C1=CC(=O)\C(=N/Nc3c(c4c(cc3)cccc4)[O-])\c2c1cc(cc2)[N+](=O)[O-]
InChI
1S/C20H13N3O7S.Na/c24-17-10-18(31(28,29)30)15-9-12(23(26)27)6-7-14(15)19(17)22-21-16-8-5-11-3-1-2-4-13(11)20(16)25;/h1-10,21,25H,(H,28,29,30);/q;+1/p-1/b22-19-;
InChI key
JHUJLRKQZAPSDP-GXTSIBQPSA-M
Analysis Note
Appearance: Black to dark brown-black fine powder, eventually with granular parts
Clarity of solution: passes test
Absorption maximum λmax. (buffer pH 10.0): 612 - 616 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.02 g/l; buffer pH 10.0; calc. on dried substance): 400 - 510
Loss on drying (110 °C): ≤ 7 %
Suitability as indicator (for complexometric titration, ACS): passes test
Suitability as indicator (Reag. Ph Eur): passes test
Other Notes
1 of 1
Cet article | |||
|---|---|---|---|
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| form powder | form solid | form powder | form solid |
| pH 3.7 (20 °C, 10 g/L in H2O) | pH 9.5 (20 °C, 10 g/L in H2O) | pH - | pH 6.1 (20 °C, 10 g/L in H2O) |
| color black to dark brown | color - | color - | color - |
| bulk density 400‑600 kg/m3 | bulk density 540 kg/m3 | bulk density - | bulk density 700 kg/m3 |
| solubility 50 g/L | solubility 20 g/L | solubility - | solubility - |
signalword
Warning
hcodes
Hazard Classifications
Aquatic Chronic 2 - Eye Irrit. 2
Classe de stockage
11 - Combustible Solids
wgk
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificats d'analyse (COA)
Recherchez un Certificats d'analyse (COA) en saisissant le numéro de lot du produit. Les numéros de lot figurent sur l'étiquette du produit après les mots "Lot" ou "Batch".
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Retrouvez la documentation relative aux produits que vous avez récemment achetés dans la Bibliothèque de documents.
Numéro d'article de commerce international
| Référence | GTIN |
|---|---|
| 1031700100 | 04022536040455 |
| 1031700000 | 04022536040424 |
| 1031700025 | 04022536040431 |
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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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