1.02401

Benzoic acid

volumetric standard, secondary reference material for alkalimetry, traceable to NIST Standard Reference Material (SRM) Certipur^® Reag. Ph Eur,Reag. USP

• Synonym(s): Benzoic acid, Phenylformic acid, Benzene carboxylic acid
• Empirical Formula (Hill Notation): C₇H₆O₂
• CAS Number: 65-85-0
• Molecular Weight: 122.12
• UNSPSC Code: 41116107
• EC Index Number: 200-618-2
• NACRES: NA.24

Properties

• Agency: ISO 17025; reag. Ph. Eur.; reag. USP
• Quality Level: 300
• vapor pressure: 0.001 hPa ( 20 °C)
• form: solid
• autoignition temp.: 570 °C
• potency: 1700 mg/kg LD₅₀, oral (Rat); >5000 mg/kg LD₅₀, skin (Rabbit)
• technique(s): titration: suitable
• pH: 2.5-3.5 (20 °C in H₂O, saturated solution)
• bp: 249 °C/1013 hPa
• mp: 121-123 °C
• transition temp: flash point 121 °C
• solubility: 2.9 g/L
• density: 1.321 g/cm³ at 20 °C
• bulk density: 500 kg/m³
• storage temp.: 15-25°C
• InChI: 1S/C7H6O2/c8-7(9)6-4-2-1-3-5-6/h1-5H,(H,8,9)
• InChI key: WPYMKLBDIGXBTP-UHFFFAOYSA-N

Description

General description

Benzoic acid is a volumetric standard produced under rigorous conditions and qualified with the highest possible precision. Its mass fraction is determined by potentiometric titration, and it is qualified in a DIN EN ISO/IEC 17025 accredited laboratory.

Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.
Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.

Application

It is used as a certified reference material (CRM) for titer determinations in alkalimetric titrations, following USP and Ph. Eur.

Features and Benefits

• Available as a solid in a secure glass bottle to ensure its stability for the entire shelf life until opened.
• Certified reference material according to ISO 17034
• High-purity material traceable to NIST SRMs
• Measured in a DIN EN ISO/IEC 17025 accredited laboratory
• In accordance with the chapter reagents of USP and Ph. Eur
• High-quality offering accurate titer determinations
• Accompanied by a certificate of analysis (CoA)

Packaging

SKU-pack size numbers ending with a "3" are SmartChemicals with an RFID tag on the label for seamless data transfer to the instrument, e.g. xxxxxx1003 or xxxxxxx 4003. More information on www.sigmaaldrich.com/SmartChemicals

Legal Information

CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Pictograms: GHS05,GHS08
• Signal Word: Danger
• Hazard Statements: H315 - H318 - H372
• Precautionary Statements: P260 - P264 - P280 - P302 + P352 - P305 + P351 + P338 - P314
• Hazard Classifications: Eye Dam. 1 - Skin Irrit. 2 - STOT RE 1 Inhalation
• Target Organs: Lungs
• Storage Class Code: 6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
• WGK: WGK 1