PHR1314

p-Xylene

Pharmaceutical Secondary Standard; Certified Reference Material

• Synonym(s): 1,4-Dimethylbenzene
• Linear Formula: C₆H₄(CH₃)₂
• CAS Number: 106-42-3
• Molecular Weight: 106.17
• UNSPSC Code: 41116107
• NACRES: NA.24
• PubChem Substance ID: 329823300
• EC Number: 203-396-5
• Beilstein/REAXYS Number: 1901563
• MDL number: MFCD00008556

Properties

• Product Name: p-Xylene, Pharmaceutical Secondary Standard; Certified Reference Material
• format: neat
• Quality Level: 300
• storage temp.: 2-30°C
• 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
• 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)

Description

Analysis Note

These secondary standards offer multi-traceability to the US and EP primary standards, where they are available.

Application

p-Xylene may be used as a pharmaceutical reference standard for the determination of the analyte in pharmaceutical formulations by chromatography techniques.[1][2]

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.

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.

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.

Safety Information

• pictograms: GHS02,GHS08,GHS07
• signalword: Danger
• hcodes: H226,H304,H312 + H332,H315,H319,H335,H412
• pcodes: P210 - P273 - P280 - P301 + P310 - P303 + P361 + P353 - P331
• 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: 3 - Flammable liquids
• wgk: WGK 2
• flash_point_f: 80.6 °F - closed cup
• flash_point_c: 27 °C - closed cup