41019

Melting point standard 235-237°C

analytical standard

• Synonym(s): Caffeine, 1,3,7-Trimethylxanthine
• Empirical Formula (Hill Notation): C₈H₁₀N₄O₂
• CAS Number: 58-08-2
• Molecular Weight: 194.19
• Beilstein/REAXYS Number: 17705
• EC Number: 200-362-1
• MDL number: MFCD00005758
• UNSPSC Code: 12352210
• PubChem Substance ID: 329756046
• NACRES: NA.24

Properties

• grade: analytical standard
• Quality Level: 100
• 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: human ... ADORA1(134) , ADORA2A(135) , ADORA2B(136) , ADORA3(140)

Description

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

Recommended products

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Safety Information

• pictograms: GHS07
• signalword: Warning
• hcodes: H302
• pcodes: P264 - P270 - P301 + P312 - P501
• Hazard Classifications: Acute Tox. 4 Oral
• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: dust mask type N95 (US), Eyeshields, Faceshields, Gloves