Skip to Content
Merck

01422

Melting point standard 79-81°C

analytical standard

Synonym(s):

Naphthalene

Sign In to View Organizational & Contract Pricing.

Select a Size

All Photos(2)

About This Item

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

Product Name

Melting point standard 79-81°C, analytical standard

InChI

1S/C10H8/c1-2-6-10-8-4-3-7-9(10)5-1/h1-8H

InChI key

UFWIBTONFRDIAS-UHFFFAOYSA-N

SMILES string

c1ccc2ccccc2c1

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

Quality Level

100

Looking for similar products? Visit Product Comparison Guide

Related Categories

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

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.

signalword

Warning

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

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

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
BCCM8867
BCCK3464
BCCH3994
BCCD0376
BCCD4409

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.

Search for a COA

Already Own This Product?

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

Visit the Document Library

Donald L. Pavia
Introduction to Organic Laboratory Techniques: A Small Scale Approach, 23-23 (2005)
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)
A piezo-thermal probe for thermomechanical analysis
Gaitas A, et al.
The Review of Scientific Instruments (2011)
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
View All Related Papers

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