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Melting point standard 121-123°C

analytical standard

Synonyme(s) :

Acide benzoique, Schmelzpunktstandard 121-123°C

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5 G
38,50 €

38,50 €


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5 G
38,50 €

About This Item

Formule linéaire :
C6H5COOH
Numéro CAS:
Poids moléculaire :
122.12
Beilstein:
636131
Numéro CE :
Numéro MDL:
Code UNSPSC :
20121904
ID de substance PubChem :
Nomenclature NACRES :
NA.24

38,50 €


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Qualité

analytical standard

Niveau de qualité

Densité de vapeur

4.21 (vs air)

Pression de vapeur

10 mmHg ( 132 °C)

Température d'inflammation spontanée

1061 °F

Durée de conservation

limited shelf life, expiry date on the label

pb

249 °C (lit.)

Pf

121-123 °C (±0.3°C)
121-125 °C (lit.)

Application(s)

food and beverages
pharmaceutical

Format

neat

Chaîne SMILES 

OC(=O)c1ccccc1

InChI

1S/C7H6O2/c8-7(9)6-4-2-1-3-5-6/h1-5H,(H,8,9)

Clé InChI

WPYMKLBDIGXBTP-UHFFFAOYSA-N

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Description générale

Benzoic acid melting point standard, 121-123 °C is useful as a melting point calibration standard while defining the purity of pharmaceutical chemicals. Its melting point value is determined with an average of 6 to 12 measurements using a Büchi B-545 instrument that is calibrated against primary standards.

Application

Melting point standard 121-123 °C, benzoic acid is an analytical standard used to calibrate melting point instruments, in the thermodynamic mode of operation. It is also used in R & D labs for chemical quality control (QC) and quality assurance (QA) to identify solid crystalline substances and to check their purity.

Caractéristiques et avantages

  • Melting point calibration standard traceable to primary standards (LGC, London)
  • Grade: Analytical Standard
  • Uncertainty of measurement up to ± 0.3 °C
  • Provided with certificates of analysis and safety data sheet
  • A product of analytical standard grade that meets the QC/QA requirements of melting point analysis

Pictogrammes

Health hazardCorrosion

Mention d'avertissement

Danger

Mentions de danger

Classification des risques

Eye Dam. 1 - Skin Irrit. 2 - STOT RE 1 Inhalation

Organes cibles

Lungs

Code de la classe de stockage

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

Classe de danger pour l'eau (WGK)

WGK 1

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

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


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Certificats d'analyse (COA)

Lot/Batch Number

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An auxiliary-assisted, copper catalyzed or promoted sulfenylation of benzoic acid derivative β-C-H bonds and benzylamine derivative γ-C-H bonds has been developed. The method employs disulfide reagents, copper(II) acetate, and DMSO solvent at 90-130 °C. Application of this methodology to the

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/449/386/product-dating-information-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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