Silicon dioxide

• Catalog No.: 634867
• CAS Number: 60676-86-0
• M. F.: O2Si
• M. W.: 60.0843
• Purity: 99.99% trace metals basis

SYNONYMS

• Title: 二氧化硅
• IUPAC name: silanedione
• IUPAC Traditional name: silica
• Synonyms: Sand; 石英; Cristobalite; Quartz; Silica; 硅石; 方石英; 砂石

DATABASE IDS

• EC Number: 262-373-8
• PubChem SID: 24882697
• MDL Number: MFCD00011232
• CAS Number: 60676-86-0

PROPERTIES

• Grade: optical grade
• Hardness: 7.0 mohs
• Linear Formula: SiO2
• L × W × Thickness: 10 mm × 10 mm × 0.5 mm
• Purity: 99.99% trace metals basis
• Target Organ: Lungs
• Density: 2.6 g/mL at 25 °C(lit.)
• Density: 2.684 g/mL
• Melting Point: 1610 °C(lit.)
• Refractive Index: n20/D 1.544(lit.)
• Semiconductor Properties: <0001>
• Transition Temperature: Tm 573.1 °C (phase change)
• GHS Signal Word: Warning
• GHS Hazard statements: H319-H335-H373
• European Hazard Symbols: Harmful (Xn)
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves
• GHS Precautionary statements: P261-P305 + P351 + P338
• Risk Statements: 36/37-48/20
• RTECS: VV7328000
• Safety Statements: 22-26-36
• German water hazard class: nwg

DETAILS

Description (English)

Other Notes
specific heat = 0.18 cal/g; thermoelectric constant = 1200μV/°C @ 300 °C; thermal conductivity = 0.0033 cal/cm°C; themal expansion (x10-6) = α11: 13.71, α33: 7.48; Q value = 1.8 × 106 min; acoustic velocity, SAW = 3160 m/sec; frequency constant, BAW = 1661 kHz/mm; piezoelectric coupling = K2 BAW: 0.65%, SAW: 0.14%
Packaging
5 ea in padded box
Physical form
Crystalline, hexagonal (a = 4.914 Å, c = 5.405 Å)
Features and Benefits
An excellent substrate for microwave filters for applications in the wireless communication arena.

Description (简体中文)

Other Notes
比热 = 0.18cal/g；300°C 下的热电常数 = 1200μV/°C；热导率 = 0.0033cal/cm°C；热膨胀（×10-6） = α11：13.71，α33：7.48；Q 值 = 1.8×106min；声速，SAW = 3160m/s；频率常数，BAW = 1661kHz/mm；压电耦合 = K2 BAW：0.65%，SAW：0.14%
包装
5 ea in padded box
Physical form
Crystalline, hexagonal (a = 4.914 Å, c = 5.405 Å)
Features and Benefits
应用于无线通信领域的微波滤波器的出色基片。