41019

Melting point standard 235-237°C

analytical standard

• Synonyma: Caffeine, 1,3,7-Trimethylxanthine
• Empirický vzorec (Hillův zápis): C₈H₁₀N₄O₂
• Číslo CAS: 58-08-2
• Molekulová hmotnost: 194.19
• UNSPSC Code: 12352210
• NACRES: NA.24
• PubChem Substance ID: 329756046
• EC Number: 200-362-1
• Beilstein/REAXYS Number: 17705
• MDL number: MFCD00005758

Vlastnosti

• grade: analytical standard
• Quality Segment: 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)

Popis

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.

Bezpečnostní informace

• pictograms: GHS07
• signalword: Warning
• hcodes: H302
• pcodes: P264 - P270 - P301 + P312 - P501
• Hazard Classifications: Acute Tox. 4 Oral
• Skladovací třída: 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