8.14651

Tetramethyl orthosilicate

for synthesis

• Synonym(s): Tetramethyl orthosilicate
• Empirical Formula (Hill Notation): C₄H₁₂O₄Si
• CAS Number: 681-84-5
• Molecular Weight: 152.22
• MDL number: MFCD00008341
• UNSPSC Code: 12352103
• EC Index Number: 211-656-4
• NACRES: NA.22

Properties

• vapor pressure: 18 hPa ( 25 °C)
• Quality Level: 200
• assay: ≥98.0% (GC)
• form: liquid
• autoignition temp.: 245 °C
• potency: 17510 mg/kg LD₅₀, skin (Rabbit)
• expl. lim.: 0.88-23.8 % (v/v)
• bp: 122 °C/1013 hPa
• mp: 3 °C
• transition temp: flash point 26 °C
• density: 1.03 g/cm³ at 20 °C
• storage temp.: 2-30°C
• InChI: 1S/C4H12O4Si/c1-5-9(6-2,7-3)8-4/h1-4H3
• InChI key: LFQCEHFDDXELDD-UHFFFAOYSA-N

Description

Analysis Note

Assay (GC, area%): ≥ 98.0 % (a/a)
Density (d 20 °C/ 4 °C): 1.030 - 1.035
Identity (IR): passes test
Due to its specific melting range the product may be solid, liquid, a solidified melt or a supercooled melt.

Safety Information

• pictograms: GHS02,GHS05,GHS06
• signalword: Danger
• hcodes: H226 - H315 - H318 - H330
• pcodes: P210 - P233 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 1 Inhalation - Eye Dam. 1 - Flam. Liq. 3 - Skin Irrit. 2
• Storage Class: 3 - Flammable liquids
• wgk_germany: WGK 1
• flash_point_f: 78.8 °F - closed cup
• flash_point_c: 26 °C - closed cup