di-Sodium tetraborate decahydrate
Empirical Formula (Hill Notation): | B4Na2O7 · 10H2O |
CAS Number: | 1303-96-4 |
Molecular Weight: | 381.37 |
MDL number: | MFCD00149193 |
EC Index Number: | 215-540-4 |
Кат. номер |
1019640025 |
1.01964.0025 |
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.
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.
- 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.
pH-value (25°C): 9.180 - 9.186
Identity: passes test
CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany
storage conditions | Store at +15°C to +25°C. |
Quality Level | 300 |
grade | certified reference material |
Agency/Method | complies with DIN 19266 |
vapor pressure | 0.213 hPa ( 20 °C) |
product line | Certipur® |
potency | 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) |
solubility | 49.74 g/L |
density | 1.72 g/cm3 at 20 °C |
bulk density | 750 kg/m3 |
Featured Industry | Environmental Food and Beverages General Analytical Industrial QC Pharmaceutical |
format | neat |
storage temp. | 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;;;;;;;;;; |
InChI key | OJPFLODMGUZMKD-UHFFFAOYSA-N |