41019

熔点标准品 235-237°C

analytical standard

• 别名: 咖啡因, 1,3,7-三甲基黄嘌呤
• 经验公式（希尔记法）: C₈H₁₀N₄O₂
• CAS号: 58-08-2
• 分子量: 194.19
• Beilstein: 17705
• EC 号: 200-362-1
• MDL编号: MFCD00005758
• UNSPSC代码: 12352210
• PubChem化学物质编号: 329756046
• NACRES: NA.24

属性

• 等级: analytical standard
• 质量水平: 100
• 保质期: limited shelf life, expiry date on the label
• mp: 234-236.5 °C (lit.); 235-237 °C (±0.3°C)
• 应用: food and beverages; pharmaceutical
• 包装形式: neat
• SMILES字符串: 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
• 基因信息: human ... ADORA1(134) , ADORA2A(135) , ADORA2B(136) , ADORA3(140)

说明

一般描述

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.

应用

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

特点和优势

• 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

推荐产品

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安全信息

• 象形图: GHS07
• 警示用语：: Warning
• 危险声明: H302
• 预防措施声明: P264 - P270 - P301 + P312 - P501
• 危险分类: Acute Tox. 4 Oral
• 储存分类代码: 11 - Combustible Solids
• WGK: WGK 1
• 闪点(°F): Not applicable
• 闪点(°C): Not applicable
• 个人防护装备: dust mask type N95 (US), Eyeshields, Faceshields, Gloves