Skip to Content
Merck
All Photos(2)

Key Documents

01422

Supelco

Melting point standard 79-81°C

analytical standard

Synonym(s):

Naphthalene

Sign Into View Organizational & Contract Pricing


About This Item

Empirical Formula (Hill Notation):
C10H8
CAS Number:
Molecular Weight:
128.17
Beilstein:
1421310
EC Number:
MDL number:
UNSPSC Code:
20121904
PubChem Substance ID:
NACRES:
NA.24

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

Looking for similar products? Visit Product Comparison Guide

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

Signal Word

Warning

Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 2 - Flam. Sol. 2

Storage Class Code

4.1B - Flammable solid hazardous materials

WGK

WGK 3

Flash Point(F)

173.3 °F - closed cup

Flash Point(C)

78.5 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Introduction to Organic Laboratory Techniques: A Small Scale Approach, 23-23 (2005)
A piezo-thermal probe for thermomechanical analysis
Gaitas A, et al.
The Review of Scientific Instruments (2011)
Donald L. Pavia
Introduction to Organic Laboratory Techniques: A Small Scale Approach, 23-23 (2005)
David L Burrows et al.
Journal of analytical toxicology, 29(5), 275-295 (2005-08-18)
The estimated number of employees in the United Stated screened annually for illicit drugs is approximately 20 million, with marijuana being the most frequently abused drug. Urine adulterants provide an opportunity for illicit drug users to obtain a false-negative result
A study of the drying behaviour of various types of hydrated hydroxypropyl cellulose (HPC) and their mixtures with drugs of different solubility using DSC
Talik P and Hubicka U
Journal of Thermal Analysis and Calorimetry (2019)

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service