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英文名稱：2,3-Butanedione  CAS號：431-03-8 分子式：C4H6O2 分子量：86.09 EINECS號：207-069-8

熔點 -4--2 °C沸點 88 °C(lit.)
密度 0.985 g/mL at 20 °C
蒸氣密度3 (vs air)
蒸氣壓52.2 mm Hg ( 20 °C)
折射率 n20/D 1.394(lit.)
FEMA 2370 | DIACETYL閃點 45 °F
儲存條件 2-8°C
溶解度 200g/l形態Liquid顏色Clear yellow爆炸極限值(explosive limit)2.4-13.0%(V)水溶解性 200 g/L (20 oC)Merck 14,2966JECFA Number408BRN 605398穩定性Stable. Flammable. Incompatible with acids, strong bases, metals, reducing agents, oxidizing agents. Protect from moisture and water. Note low flashpoint.InChIKeyQSJXEFYPDANLFS-UHFFFAOYSA-N

危險性符號(GHS)
GHS07,GHS02,GHS05,GHS06警示詞Danger危險性描述H319-H225-H302-H315-H318-H331-H335防范說明P303+P361+P353-P405-P501a-P210-P261-P280-P305+P351+P338-P311-P233-P240-P241+P242+P243-P264-P270-P301+P312+P330-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313-P370+P378-P403+P235-P501危險品標志 F,Xn危險類別碼 11-20/22-38-41-36/38-20/21/22-37/38安全說明 9-16-26-37/39-36/37/39-39危險品運輸編號 UN 2346 3/PG 2
WGK Germany 2
RTECS號EK2625000
F 13自燃溫度365 °CTSCA YesHazardClass 3PackingGroup II海關編碼 29141990毒性LD50 orally in rats: 1580 mg/kg (Jenner)