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41019

Melting point standard 235-237°C

analytical standard

Synonim(y):

Caffeine, 1,3,7-Trimethylxanthine

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Do Państwa/SKUDostępnośćCena netto
1 g
Skontaktuj się z Obsługą Klienta, aby uzyskać informacje na temat dostępności
104,00 zł
5 g
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256,00 zł

Informacje o tej pozycji

Wzór empiryczny (zapis Hilla):
C8H10N4O2
Numer CAS:
Masa cząsteczkowa:
194.19
UNSPSC Code:
12352210
NACRES:
NA.24
PubChem Substance ID:
EC Number:
200-362-1
Beilstein/REAXYS Number:
17705
MDL number:

104,00 zł


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grade

analytical standard

Quality Segment

shelf life

limited shelf life, expiry date on the label

mp

234-236.5 °C (lit.), 235-237 °C (±0.3°C)

application(s)

food and beverages
pharmaceutical

format

neat

SMILES string

CN1C(=O)N(C)c2ncn(C)c2C1=O

InChI

1S/C8H10N4O2/c1-10-4-9-6-5(10)7(13)12(3)8(14)11(6)2/h4H,1-3H3

InChI key

RYYVLZVUVIJVGH-UHFFFAOYSA-N

Gene Information

General description

Melting point standard 235-237 °C, caffeine is useful to calibrate melting point instruments, in the thermodynamic mode of measurement. The value of its melting point is determined with an average of 6 to 12 measurements using a Büchi B-545 instrument that is calibrated against primary standards.

Application

Caffeine melting point standard 235-237 °C finds its use in the characterization of pure chemicals and pharmaceutical compounds.

Features and Benefits

  • Melting point calibration standard traceable to primary standards (LGC, London)
  • Grade: Analytical Standard
  • Standard deviation up to ± 0.3 °C
  • Provided with certificates of analysis and safety data sheet

Other Notes

Find a digital Reference Material for this product available on our online platform ChemisTwin® for NMR. You can use this digital equivalent on ChemisTwin® for your sample identity confirmation and compound quantification (with digital external standard). An NMR spectrum of this substance can be viewed and an online comparison against your sample can be performed with a few mouseclicks. Learn more here and start your free trial.
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Ta pozycja
PHR109575035PHR1009
Caffeine Pharmaceutical Secondary Standard; Certified Reference Material

Supelco

PHR1009

Caffeine

format

neat

format

neat

format

neat

format

neat

mp

234-236.5 °C (lit.), 235-237 °C (±0.3°C)

mp

~Approximately 237 °C, 234-236.5 °C (lit.)

mp

234-236.5 °C (lit.)

mp

234-236.5 °C (lit.)

grade

analytical standard

grade

certified reference material, pharmaceutical secondary standard

grade

analytical standard

grade

certified reference material, pharmaceutical secondary standard

application(s)

food and beverages
pharmaceutical

application(s)

pharmaceutical (small molecule)

application(s)

cleaning products
food and beverages
personal care
pharmaceutical

application(s)

pharmaceutical (small molecule)

shelf life

limited shelf life, expiry date on the label

shelf life

-

shelf life

limited shelf life, expiry date on the certificate and label

shelf life

-

Quality Level

100

Quality Level

300

Quality Level

100

Quality Level

300


pictograms

Exclamation mark

signalword

Warning

hcodes

Hazard Classifications

Acute Tox. 4 Oral

Klasa składowania

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Faceshields, Gloves



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Certyfikaty analizy (CoA)

Lot/Batch Number

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Questions

1–2 of 2 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. 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

      Helpful?

  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. 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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