8.03528

Diacetyl

for synthesis

• Synonyme(s) : Diacetyl, 2,3-Butanedione, 2,3-Butadione, Dimethyldiketon, Dimethylglyoxal
• Formule empirique (notation de Hill): C₄H₆O₂
• Numéro CAS: 431-03-8
• Poids moléculaire : 86.09
• Numéro MDL: MFCD00008756
• Code UNSPSC : 12352115
• Numéro de classement CE : 207-069-8
• Nomenclature NACRES : NA.22

Propriétés

• Pression de vapeur: 52 hPa ( 20 °C)
• Niveau de qualité: 200
• Pureté: ≥97.0% (GC)
• Forme: liquid
• Température d'inflammation spontanée: 365 °C
• Puissance: 1580 mg/kg LD₅₀, oral (Rat); >5000 mg/kg LD₅₀, skin (Rabbit)
• Limite d'explosivité: 2.4-13.0 % (v/v)
• Point d'ébullition: 89-90 °C/1013 hPa
• Pf: -2 °C
• Température de transition: flash point 7 °C
• Densité: 0.99 g/cm³ at 20 °C
• Température de stockage: 2-8°C
• InChI: 1S/C4H6O2/c1-3(5)4(2)6/h1-2H3
• Clé InChI: QSJXEFYPDANLFS-UHFFFAOYSA-N

Description

Application

• Photosensitizer in Synthesis: Discusses diacetyl′s role as a non-toxic, readily available "traceless" photosensitizer in metal-free cross-dehydrogenative coupling reactions, highlighting its versatility and economic benefits (Huang et al., 2019).
• Detection in E-cigarettes: Investigates diacetyl as a precursor to hazardous emissions in e-cigarette liquids, providing insights into the health risks associated with its use in vaping products (Vas, Porter & McAdam, 2019).
• Antimicrobial Activity: Explores the synergistic antimicrobial properties of diacetyl combined with reuterin against foodborne pathogens, emphasizing its potential for enhancing food safety (Langa et al., 2014).
• Coffee Industry Exposure: Details exposure levels to diacetyl and other volatile organic compounds in coffee roasting and café settings, discussing occupational safety measures and health implications (LeBouf et al., 2020).

Remarque sur l'analyse

Assay (GC, area%): ≥ 97.0 % (a/a)
Density (d 20 °C/ 4 °C): 0.984 - 0.987
Identity (IR): passes test

Informations sur la sécurité

• Pictogrammes: GHS02,GHS06,GHS08,GHS05
• Mention d'avertissement: Danger
• Mentions de danger: H225,H302,H315,H317,H318,H331,H373
• Conseils de prudence: P210 - P280 - P301 + P312 - P304 + P340 + P311 - P305 + P351 + P338 - P314
• Classification des risques: Acute Tox. 3 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 2 - Skin Irrit. 2 - Skin Sens. 1 - STOT RE 2 Inhalation
• Organes cibles: Respiratory system
• Code de la classe de stockage: 3 - Flammable liquids
• Classe de danger pour l'eau (WGK): WGK 2
• Point d'éclair (°F): 44.6 °F - closed cup
• Point d'éclair (°C): 7 °C - closed cup