01422
Melting point standard 79-81°C
analytical standard
Synonym(s):
Naphthalene
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About This Item
Empirical Formula (Hill Notation):
C10H8
CAS Number:
Molecular Weight:
128.17
UNSPSC Code:
20121904
NACRES:
NA.24
PubChem Substance ID:
EC Number:
202-049-5
Beilstein/REAXYS Number:
1421310
MDL number:
grade
analytical standard
Quality Level
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
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.
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
signalword
Warning
hcodes
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
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