8.18255

Paraldehyde

for synthesis

• Synonym(s): Paraldehyde, 2,4,6-Trimethyl-1,3,5-trioxane
• Empirical Formula (Hill Notation): C₆H₁₂O₃
• CAS Number: 123-63-7
• Molecular Weight: 132.16
• MDL number: MFCD00036208
• UNSPSC Code: 12352005
• EC Index Number: 204-639-8
• NACRES: NA.22

Properties

• vapor pressure: 13.3 hPa ( 20 °C)
• Quality Level: 200
• assay: ≥98.0% (GC)
• form: liquid
• autoignition temp.: 235 °C
• potency: 2711 mg/kg LD₅₀, oral (Rat); 13959 mg/kg LD₅₀, skin (Rabbit)
• expl. lim.: 1.3-17.0 % (v/v)
• bp: 124 °C/1013 hPa
• mp: 12 °C
• transition temp: flash point 27 °C
• solubility: 120 g/L
• density: 0.99 g/cm³ at 20 °C
• storage temp.: 2-30°C
• InChI: 1S/C6H12O3/c1-4-7-5(2)9-6(3)8-4/h4-6H,1-3H3
• InChI key: SQYNKIJPMDEDEG-UHFFFAOYSA-N

Description

Analysis Note

Assay (GC, area%): ≥ 98.0 % (a/a)
Density (d 20 °C/ 4 °C): 0.992 - 0.994
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
• signalword: Warning
• hcodes: H226
• pcodes: P210 - P233 - P240 - P241 - P242 - P243
• Hazard Classifications: Flam. Liq. 3
• Storage Class: 3 - Flammable liquids
• wgk_germany: WGK 1
• flash_point_f: 75.2 °F - closed cup
• flash_point_c: 24 °C - closed cup