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PHR1314

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p-Xylene

Pharmaceutical Secondary Standard; Certified Reference Material

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Synonym(s):
1,4-Dimethylbenzene
Linear Formula:
C6H4(CH3)2
CAS Number:
106-42-3
Molecular Weight:
106.17
Beilstein:
1901563
EC Number:
203-396-5
MDL number:
MFCD00008556
PubChem Substance ID:
329823300
NACRES:
NA.24

grade

certified reference material
pharmaceutical secondary standard

Quality Level

300

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

refractive index

n20/D 1.495 (lit.)

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

SMILES string

Cc1ccc(C)cc1

InChI

1S/C8H10/c1-7-3-5-8(2)6-4-7/h3-6H,1-2H3

InChI key

URLKBWYHVLBVBO-UHFFFAOYSA-N

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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 USP, EP (PhEur) and BP primary standards, where they are available.

Other Notes

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.

Footnote

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.

Recommended products

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.

Signal Word

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

Storage Class Code

3 - Flammable liquids

WGK

WGK 2

Flash Point(F)

80.6 °F - closed cup

Flash Point(C)

27 °C - closed cup

Regulatory Information

危险化学品

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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)
Francesc X Prenafeta-Boldú et al.
FEMS microbiology ecology, 80(3), 722-734 (2012-03-03)
The treatment of air contaminated with toluene, ethylbenzene, and p-xylene was assayed in three laboratory-scale biofilters, each consisting of two modules connected in series, packed with a pelletized organic fertilizer and inoculated with a toluene-degrading liquid enrichment culture. Biofilters were
A Vyskocil et al.
Toxicology and industrial health, 28(9), 796-819 (2011-11-09)
There is accumulating epidemiological evidence that exposure to some solvents, metals, asphyxiants and other substances in humans is associated with an increased risk of acquiring hearing loss. Furthermore, simultaneous and successive exposure to certain chemicals along with noise can increase
G Gallastegui et al.
Journal of hazardous materials, 185(2-3), 1019-1026 (2010-10-30)
The influence of water irrigation on both the long-term and short-term performance of p-xylene biodegradation under several organic loading scenarios was investigated using an organic packing material composed of pelletised sawdust and pig manure. Process operation in a modular biofilter
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