8.03528

Diacetyl

for synthesis

• Synonym(e): Diacetyl, 2,3-Butanedione, 2,3-Butadione, Dimethyldiketon, Dimethylglyoxal
• Empirische Formel (Hill-System): C₄H₆O₂
• CAS-Nummer: 431-03-8
• Molekulargewicht: 86.09
• MDL-Nummer: MFCD00008756
• UNSPSC-Code: 12352115
• EG-Index-Nummer: 207-069-8
• NACRES: NA.22

Eigenschaften

• Dampfdruck: 52 hPa ( 20 °C)
• Qualitätsniveau: 200
• Assay: ≥97.0% (GC)
• Form: liquid
• Selbstzündungstemp.: 365 °C
• Wirksamkeit: 1580 mg/kg LD₅₀, oral (Rat); >5000 mg/kg LD₅₀, skin (Rabbit)
• Expl.-Gr.: 2.4-13.0 % (v/v)
• bp: 89-90 °C/1013 hPa
• mp (Schmelzpunkt): -2 °C
• Übergangstemp.: flash point 7 °C
• Dichte: 0.99 g/cm³ at 20 °C
• Lagertemp.: 2-8°C
• InChI: 1S/C4H6O2/c1-3(5)4(2)6/h1-2H3
• InChIKey: QSJXEFYPDANLFS-UHFFFAOYSA-N

Beschreibung

Anwendung

• 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).

Hinweis zur Analyse

Gehalt (GC, Fl.%): ≥ 97.0 % (a/a)
Dichte (d 20 °C/ 4 °C): 0.984 - 0.987
Identität (IR): entspricht

Sicherheitshinweise

• Piktogramme: GHS02,GHS06,GHS08,GHS05
• Signalwort: Danger
• H-Sätze: H225,H302,H315,H317,H318,H331,H373
• P-Sätze: P210 - P280 - P301 + P312 - P304 + P340 + P311 - P305 + P351 + P338 - P314
• Gefahreneinstufungen: Acute Tox. 3 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 2 - Skin Irrit. 2 - Skin Sens. 1 - STOT RE 2 Inhalation
• Zielorgane: Respiratory system
• Lagerklassenschlüssel: 3 - Flammable liquids
• WGK: WGK 2
• Flammpunkt (°F): 44.6 °F - closed cup
• Flammpunkt (°C): 7 °C - closed cup