PHR1314
对二甲苯
Pharmaceutical Secondary Standard; Certified Reference Material
别名:
1,4-二甲苯
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关于此项目
线性分子式:
C6H4(CH3)2
化学文摘社编号:
分子量:
106.17
UNSPSC Code:
41116107
NACRES:
NA.24
PubChem Substance ID:
EC Number:
203-396-5
Beilstein/REAXYS Number:
1901563
MDL number:
InChI
1S/C8H10/c1-7-3-5-8(2)6-4-7/h3-6H,1-2H3
InChI key
URLKBWYHVLBVBO-UHFFFAOYSA-N
SMILES string
Cc1ccc(C)cc1
grade
certified reference material, pharmaceutical secondary standard
agency
traceable to NIST 3005, traceable to USP 1601849
vapor density
3.7 (vs air)
vapor pressure
9 mmHg ( 20 °C)
CofA
current certificate can be downloaded
autoignition temp.
984 °F
expl. lim.
7 %
technique(s)
HPLC: suitable, gas chromatography (GC): suitable
Quality Level
bp
138 °C (lit.)
mp
12-13 °C (lit.)
density
0.861 g/mL at 20 °C (lit.)
application(s)
pharmaceutical (small molecule)
format
neat
storage temp.
2-30°C
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General description
Pharmaceutical secondary standards for application in quality control, provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards.
Application
p-Xylene may be used as a pharmaceutical reference standard for the determination of the analyte in pharmaceutical formulations by chromatography techniques.
These Secondary Standards are qualified as Certified Reference Materials. These are suitable for use in several analytical applications including but not limited to pharma release testing, pharma method development for qualitative and quantitative analyses, food and beverage quality control testing, and other calibration requirements.
Analysis Note
These secondary standards offer multi-traceability to the US and EP primary standards, where they are available.
Other Notes
Find a digital Reference Material for this product available on our online platform ChemisTwin® for NMR. You can use this digital equivalent on ChemisTwin® for your sample identity confirmation and compound quantification (with digital external standard). An NMR spectrum of this substance can be viewed and an online comparison against your sample can be performed with a few mouseclicks. Learn more here and start your free trial.
This Certified Reference Material (CRM) is produced and certified in accordance with ISO 17034 and ISO/IEC 17025. All information regarding the use of this CRM can be found on the certificate of analysis.
To see an example of a Certificate of Analysis for this material enter LRAB8973 in the slot below. This is an example certificate only and may not be the lot that you receive.
signalword
Danger
Hazard Classifications
Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Aquatic Chronic 3 - Asp. Tox. 1 - Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2 - STOT SE 3
target_organs
Respiratory system
存储类别
3 - Flammable liquids
wgk
WGK 2
flash_point_f
80.6 °F - closed cup
flash_point_c
27 °C - closed cup
法规信息
危险化学品
此项目有
Semi-automated peak trapping recycle chromatography instrument for peak purity investigations
Trone MD, et al.
Journal of Chromatography A, 1133(1-2), 104-111 (2006)
High-speed analysis of residual solvents by flow-modulation gas chromatography
Wittrig RE, et al.
Journal of Chromatography A, 1027(1-2), 75-82 (2004)
Sergio Grunder et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 18(49), 15632-15649 (2012-10-24)
Molecular gauge blocks, based on 1-7, 9-11 paraxylene rings, have been synthesized as part of a homologous series of oligoparaxylenes (OPXs) with a view to providing a molecular tool box for the construction of nano architectures-such as spheres, cages, capsules
Yu-Ting Cheng et al.
Angewandte Chemie (International ed. in English), 51(44), 11097-11100 (2012-10-06)
Pores for thought: Chemical liquid deposition of silica onto ZSM-5 catalysts led to smaller pore openings that resulted in >90% selectivity for p-xylene over the other xylenes in the catalytic fast pyrolysis of furan and 2-methylfuran (see scheme). The p-xylene
Thomas W Lyons et al.
Journal of the American Chemical Society, 134(38), 15708-15711 (2012-09-01)
As oil supplies dwindle, there is a growing need to develop new routes to chemical intermediates that utilize alternative feedstocks. We report here a synthesis of para-xylene, one of the highest volume chemicals derived from petroleum, using only ethylene as
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