S9640

Sodium tetraborate decahydrate

ACS reagent, ≥99.5%

• 동의어(들): Borax decahydrate, Sodium borate decahydrate
• Linear Formula: Na₂B₄O₇ · 10H₂O
• CAS Number: 1303-96-4
• Molecular Weight: 381.37
• EC Number: 215-540-4
• MDL number: MFCD00149193
• UNSPSC 코드: 12352302
• PubChem Substance ID: 329824630
• NACRES: NA.21

속성

• Grade: ACS reagent
• Quality Level: 200
• Agency: suitable for SM 4500 - NH3
• vapor pressure: 0.213 hPa ( 20 °C)
• 분석: ≥99.5%
• 양식: powder or crystals
• 불순물: ≤0.005% Insoluble matter
• pH: 9.15-9.20 (25 °C, 0.01 M in solution)
• density: 1.73 g/mL at 25 °C (lit.)
• 음이온 미량물: chloride (Cl^-): ≤0.001%; phosphate (PO₄^3-): ≤0.001%; sulfate (SO₄^2-): ≤0.005%
• 양이온 미량물: Ca: ≤0.005%; Fe: ≤5 ppm; heavy metals (as Pb): ≤0.001%
• SMILES string: O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[O-]B1Ob2ob([O-])ob(O1)o2
• InChI: 1S/B4O7.2Na.10H2O/c5-1-7-3-9-2(6)10-4(8-1)11-3;;;;;;;;;;;;/h;;;10*1H2/q-2;2*+1;;;;;;;;;;
• InChI key: CDMADVZSLOHIFP-UHFFFAOYSA-N

설명

일반 설명

Sodium tetraborate decahydrate is a naturally occurring material used as a catalyst or additive for many organic transformations such as Nef reaction, Knoevenagel condensation, substitution, addition, selective methylation of vicinal diols, and desilylation of trimethylsilyl alkynones.

애플리케이션

Sodium tetraborate decahydrate can be used as a catalyst in the:

• Regioselective thiolysis of 1,2-epoxides by using thiols to synthesize β-hydroxy sulfides.
• Hetero-Michael addition of thiols with electron-deficient olefins to synthesize corresponding β-adducts.
• Solvent-free Biginelli reaction to synthesize 3,4-dihydropyrimidin-2(1H)-ones.

It can also be used as an additive to prepare polypyrrole-borax composites with high dielectric properties.

법적 정보

안전성 정보

• 픽토그램: GHS08,GHS07
• 신호어: Danger
• 유해 및 위험 성명서: H319,H360FD
• 예방조치 성명서: P202 - P264 - P280 - P305 + P351 + P338 - P308 + P313 - P337 + P313
• Hazard Classifications: Eye Irrit. 2 - Repr. 1B
• Storage Class Code: 6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
• WGK: WGK 1
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable