1.01964

di-Sodium tetraborate decahydrate

certified secondary standard reference material for pH measurement; directly traceable to primary SRM from NIST/PTB pH(S)=9.18₀ (25°C) Certipur^®

• Sinónimos: di-Sodium tetraborate decahydrate, Borax, Sodium biborate decahydrate, Sodium borate decahydrate
• Fórmula empírica (notación de Hill): B₄Na₂O₇ · 10H₂O
• Número de CAS: 1303-96-4
• Peso molecular: 381.37
• Número MDL: MFCD00149193
• Código UNSPSC: 41116107
• Número índice de la CE: 215-540-4
• NACRES: NA.24

Propiedades

• grado: certified reference material
• Nivel de calidad: 300
• Agency: complies with DIN 19266
• presión de vapor: 0.213 hPa ( 20 °C)
• Línea del producto: Certipur^®
• potencia: 2660 mg/kg LD₅₀, oral (Rat); >2000 mg/kg LD₅₀, skin (Rabbit)
• pH: 9.2 (20 °C, 47 g/L in H₂O)
• mp: 75 °C (Elimination of water of crystallisation)
• solubilidad: 49.74 g/L
• densidad: 1.72 g/cm³ at 20 °C
• densidad aparente: 750 kg/m³
• aplicaciones: environmental; food and beverages; general analytical; industrial qc; pharmaceutical
• formato: neat
• temp. de almacenamiento: 15-25°C
• InChI: 1S/B4O7.2Na.10H2O/c5-1-9-3(7)11-4(8)10-2-6;;;;;;;;;;;;/h;;;10*1H2/q-2;2*+1;;;;;;;;;;
• Clave InChI: OJPFLODMGUZMKD-UHFFFAOYSA-N

Descripción

Descripción general

Certipur^® certified secondary standard reference buffers are used to precisely calibrate and monitor pH measurement instruments and buffer solutions. They are quality controlled and qualified in our ISO/IEC 17025 and 17034 accredited calibration laboratories against certified primary standard reference materials (SRM) in compliance with DIN 19266, IUPAC, NIST, Ph. Eur and USP. Certipur^® reference materials offer maximum accuracy, reliability and convenience and help avoid costly repeat analyses.

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.

Aplicación

di-Sodium tetraborate decahydrate [pH(S)=9.180 (25 °C)] is a certified secondary standard reference buffer used as a calibration buffer standard for pH instruments or pH electrodes.

Características y beneficios

• The product is delivered with a comprehensive, batch-specific Certificate of Analysis showing the relevant data for the quality management system.

The pH value of this Certipur^® buffer solution is measured using differential potentiometry with two platinum hydrogen electrodes against NIST & PTB primary SRMs [pH(S)=9.180 (25 °C)].

• It is a Certified Reference Material (CRM) offered in neat format.
• Intended for extremely precise calibration, qualification and monitoring of pH instruments and for testing other buffer solutions.

Nota de análisis

pH-value (25 °C): 9.180 - 9.186
Identity: passes test

Información legal

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

Información de seguridad

• Pictogramas: GHS07,GHS08
• Palabra de señalización: Danger
• Frases de peligro: H319 - H360FD
• Consejos de prudencia: P202 - P264 - P280 - P305 + P351 + P338 - P308 + P313 - P337 + P313
• Clasificaciones de peligro: Eye Irrit. 2 - Repr. 1B
• Código de clase de almacenamiento: 6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
• Clase de riesgo para el agua (WGK): WGK 1
• Punto de inflamabilidad (°F): Not applicable
• Punto de inflamabilidad (°C): Not applicable