01422

Melting point standard 79-81°C

analytical standard

• Synonym(s): Naphthalene
• Empirical Formula (Hill Notation): C₁₀H₈
• CAS Number: 91-20-3
• Molecular Weight: 128.17
• Beilstein/REAXYS Number: 1421310
• EC Number: 202-049-5
• MDL number: MFCD00001742
• UNSPSC Code: 20121904
• PubChem Substance ID: 329747268
• NACRES: NA.24

Properties

• grade: analytical standard
• vapor density: 4.4 (vs air)
• vapor pressure: 0.03 mmHg ( 25 °C)
• autoignition temp.: 978 °F
• shelf life: limited shelf life, expiry date on the label
• expl. lim.: 5.9 %
• bp: 218 °C (lit.)
• mp: 79-81 °C (±0.3°C); 80-82 °C (lit.)
• application(s): food and beverages; pharmaceutical
• SMILES string: c1ccc2ccccc2c1
• InChI: 1S/C10H8/c1-2-6-10-8-4-3-7-9(10)5-1/h1-8H
• InChI key: UFWIBTONFRDIAS-UHFFFAOYSA-N

Description

General description

Melting point standard 79-81 °C, naphthalene is a non-polar hydrocarbon for use in the characterization of pure chemicals and pharmaceutical compounds. The 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

Naphthalene melting point standard 79-81 °C is an analytical standard used to calibrate melting point instruments, operating in the thermodynamic mode of analysis. It′s also applicable in R&D labs for chemical quality control (QC) and quality assurance (QA) to identify solid crystalline substances and to check their purity.
Additionally, this mp standard is also used as a temperature calibration standard in thermal studies.

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

Safety Information

• pictograms: GHS02,GHS08,GHS07,GHS09
• signalword: Warning
• hcodes: H228,H302,H351,H410
• pcodes: P202 - P210 - P240 - P273 - P301 + P312 - P308 + P313
• Hazard Classifications: Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 2 - Flam. Sol. 2
• Storage Class: 4.1B - Flammable solid hazardous materials
• wgk_germany: WGK 3
• flash_point_f: 173.3 °F - closed cup
• flash_point_c: 78.5 °C - closed cup
• ppe: Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges