4H4N2; Molecular Weight:80.088; EINECS:206-027-6 ">

潘金莲被吸乳揉到高潮的视频,久久99久久99精品免观看,在电影院里拨开内裤挺进,护士交换粗吟配乱大交动态图

The physical and chemical property of 290-37-9 is provided by ChemNet.com
Chemical CAS Database with Global Chemical Suppliers - ChemNet


   ChemNet > CAS > 290-37-9 pyrazine

290-37-9 pyrazine

product Name pyrazine
CAS No 290-37-9
Synonyms 1,4-Diazine
Molecular Formula C4H4N2
Molecular Weight 80.088
InChI InChI=1/C4H4N2/c1-2-6-4-3-5-1/h1-4H
EINECS 206-027-6
Molecular Structure 290-37-9 pyrazine
Density 1.055g/cm3
Melting point 52-56℃
Boiling point 118.6°C at 760 mmHg
Refractive index 1.503
Flash point 55.6°C
Water solubility SOLUBLE
Vapour Pressur 19.7mmHg at 25°C
Hazard Symbols  F:Flammable;
 Xi:Irritant;
Risk Codes R11:;
R36/37/38:;
Safety Description S16:;
S26:;
S36:;
MSDS Material Safety Data Sheet
主站蜘蛛池模板： 澜沧| 沛县| 依安县| 平陆县| 喀喇沁旗| 四平市| 神木县| 潮安县| 韶关市| 从化市| 修文县| 铅山县| 皮山县| 信丰县| 美姑县| 宣恩县| 靖西县| 陈巴尔虎旗| 宜春市| 新宁县| 乌兰县| 云林县| 嘉义县| 中江县| 安西县| 方山县| 安新县| 双峰县| 呈贡县| 独山县| 古丈县| 大安市| 崇礼县| 建水县| 老河口市| 宁波市| 黔东| 托里县| 罗定市| 土默特左旗| 吉安市|