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
1.06161
Murexide
metal indicator, ACS
Synonym(s):
Murexide, Ammonium purpurate, acid
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
5 g | Please contact Customer Service for Availability | CZK 2,020.00 |
25 g | Please contact Customer Service for Availability | CZK 5,050.00 |
About This Item
Product Name
Murexide, (ammonium purpurate) metal indicator ACS
grade
ACS reagent
Quality Segment
form
solid
loss
≤2.0% loss on drying, 105°C
pH
5 (20 °C, 1 g/L in H2O)
solubility
1 g/L
bulk density
330 kg/m3
Amax
520-524 nm in water
storage temp.
2-30°C
SMILES string
[N+H4].N1C(=O)NC(=O)[C-](C1=O)N=C2C(=O)NC(=O)NC2=O
InChI
1S/C8H4N5O6.H3N/c14-3-1(4(15)11-7(18)10-3)9-2-5(16)12-8(19)13-6(2)17;/h(H2,10,11,14,15,18)(H2,12,13,16,17,19);1H3/q-1;/p+1
InChI key
PCCZWUCAYILEMX-UHFFFAOYSA-O
Analysis Note
Identity (UV/VIS-Spectrum): passes test
Absorption maximum (water): 520 - 524 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.01 g/l; water): ≥ 300
Sulfated ash (800 °C): ≤ 1.0 %
Loss on Drying (105°C): ≤ 2.0 %
Suitability as indicator (for metal titration): passes test
Other Notes
1 of 1
This Item | |||
|---|---|---|---|
| loss ≤2.0% loss on drying, 105°C | loss - | loss - | loss - |
| grade ACS reagent | grade - | grade ACS reagent | grade - |
| bulk density 330 kg/m3 | bulk density 900 kg/m3 | bulk density 900 kg/m3 | bulk density 600‑700 kg/m3 |
| Quality Level 200 | Quality Level 200 | Quality Level 300 | Quality Level 200 |
| storage temp. 2-30°C | storage temp. 15-25°C | storage temp. 15-25°C | storage temp. 2-30°C |
| solubility 1 g/L | solubility 620 g/L | solubility - | solubility 1920 g/L |
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Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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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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