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®
Synonym(s):
di-Sodium tetraborate decahydrate, Borax, Sodium biborate decahydrate, Sodium borate decahydrate
About This Item
Recommended Products
grade
certified reference material
Quality Level
agency
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
application(s)
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
Related Categories
General description
Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.
Application
Features and Benefits
- 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.
Analysis Note
Identity: passes test
Legal Information
signalword
Danger
hcodes
Hazard Classifications
Eye Irrit. 2 - Repr. 1B
Storage Class
6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
wgk_germany
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
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