- 中文别名:α-甲基吡啶
- 中文释义:2-甲基吡啶;α-甲基吡啶;Alpha-甲基吡啶;α-Picoline;2-皮考林
- 英文别名:2-methylpyridine;
ALPHAP;
monomethylpyridine;
ai3-2409;
aPicolin;
a-Picoline;
2-Picoline;
2-methyl-pyridine;
o-Picoline;
2-Methylpyridine - cas No.:109-06-8
- 分子式:
C6H7N
- 分子量:93.13
- 精确分子量:93.05780
- PSA:12.89000
- MDL:MFCD00006332
- InChI:The Key: BSKHPKMHTQYZBB-UHFFFAOYSA-N
- 分子结构式:
物化性质
- 外观与性状:
- 无色至黄色液体带有一种难闻的气味
- 密度:
- 0.943 g/mL at 25 °C(lit.)
- 熔点:
- −70 °C(lit.)
- 沸点:
- 128-129 °C(lit.)
- 闪点:
- 79 °F
- 水溶解性:
- MISCIBLE
- 折射率:
- n20/D 1.500(lit.)
- 蒸汽压:
- 13.468mmHg at 25°C
- 蒸汽密度:
- 3.2 (vs air)
- 存储条件/存储方法:
- 库房通风低温干燥,与氧化剂、酸类分开存放
- 稳定性相关:
1.化学性质:2-甲基吡啶和吡啶一样,能与无机酸或有机酸生成盐,与无机盐类、卤代烷等形成加成化合物。加氢时,根据条件不同得到α-甲基哌啶或吡啶。2-甲基吡啶中的2-位甲基富有反应性,氧化时生成吡啶-2-羧酸(皮考啉酸,C5H4NCO2H)。在脱水剂存在下与苯甲醛发生缩合,生成苯亚甲基衍生物。在200℃与多聚甲醛反应,生成2-(β-羟乙基)吡啶。
2.稳定性[19]稳定
3.禁配物[20] 酸类、酰基氯、强氧化剂、氯仿
4.避免接触的条件[21] 受热
5.聚合危害[22] 不聚合
- 其它信息:
1.性状:无色液体,有特殊气味。[1]
2.熔点(℃):-70[2]
3.沸点(℃):128~129[3]
4.相对密度(水=1):0.95[4]
5.相对蒸气密度(空气=1):3.2[5]
6.饱和蒸气压(kPa):1.2(20℃)[6]
7.燃烧热(kJ/mol):-3414.7[7]
8.临界压力(MPa):4.6[8]
9.辛醇/水分配系数:1.11[9]
10.闪点(℃):39(OC)[10]
11.引燃温度(℃):538[11]
12.爆炸上限(%):8.6[12]
13.爆炸下限(%):1.4[13]
14.溶解性:与水混溶,溶于多数有机溶剂。[14]
15.黏度(mPa·s):0.805
16.闪点(ºC,闭口):27
17.闪点(ºC,开口):29
18.蒸发热(KJ/mol):42.94
19.熔化热(KJ/mol):9.82
20.生成热(KJ/mol,液体):58.99
21.燃烧热(KJ/mol,25ºC):3420
22.比热容(KJ/(kg·K) ,25ºC,定压):1.70
23.电导率(S/m,25ºC):5.5×10-7
24.体膨胀系数(K-1,20ºC):0.000992
安全信息
- 外观与性状:
- 无色至黄色液体带有一种难闻的气味
- 密度:
- 0.943 g/mL at 25 °C(lit.)
- 熔点:
- −70 °C(lit.)
- 沸点:
- 128-129 °C(lit.)
- 闪点:
- 79 °F
- 水溶解性:
- MISCIBLE
- 折射率:
- n20/D 1.500(lit.)
- 蒸汽压:
- 13.468mmHg at 25°C
- 蒸汽密度:
- 3.2 (vs air)
- 存储条件/存储方法:
- 库房通风低温干燥,与氧化剂、酸类分开存放
- 稳定性相关:
1.化学性质:2-甲基吡啶和吡啶一样,能与无机酸或有机酸生成盐,与无机盐类、卤代烷等形成加成化合物。加氢时,根据条件不同得到α-甲基哌啶或吡啶。2-甲基吡啶中的2-位甲基富有反应性,氧化时生成吡啶-2-羧酸(皮考啉酸,C5H4NCO2H)。在脱水剂存在下与苯甲醛发生缩合,生成苯亚甲基衍生物。在200℃与多聚甲醛反应,生成2-(β-羟乙基)吡啶。
2.稳定性[19]稳定
3.禁配物[20] 酸类、酰基氯、强氧化剂、氯仿
4.避免接触的条件[21] 受热
5.聚合危害[22] 不聚合
- 其它信息:
1.性状:无色液体,有特殊气味。[1]
2.熔点(℃):-70[2]
3.沸点(℃):128~129[3]
4.相对密度(水=1):0.95[4]
5.相对蒸气密度(空气=1):3.2[5]
6.饱和蒸气压(kPa):1.2(20℃)[6]
7.燃烧热(kJ/mol):-3414.7[7]
8.临界压力(MPa):4.6[8]
9.辛醇/水分配系数:1.11[9]
10.闪点(℃):39(OC)[10]
11.引燃温度(℃):538[11]
12.爆炸上限(%):8.6[12]
13.爆炸下限(%):1.4[13]
14.溶解性:与水混溶,溶于多数有机溶剂。[14]
15.黏度(mPa·s):0.805
16.闪点(ºC,闭口):27
17.闪点(ºC,开口):29
18.蒸发热(KJ/mol):42.94
19.熔化热(KJ/mol):9.82
20.生成热(KJ/mol,液体):58.99
21.燃烧热(KJ/mol,25ºC):3420
22.比热容(KJ/(kg·K) ,25ºC,定压):1.70
23.电导率(S/m,25ºC):5.5×10-7
24.体膨胀系数(K-1,20ºC):0.000992
毒理性
CHEMICAL IDENTIFICATION
- RTECS NUMBER :
- TJ4900000
- CHEMICAL NAME :
- 2-Picoline
- CAS REGISTRY NUMBER :
- 109-06-8
- LAST UPDATED :
- 199806
- DATA ITEMS CITED :
- 17
- MOLECULAR FORMULA :
- C6-H7-N
- MOLECULAR WEIGHT :
- 93.14
- WISWESSER LINE NOTATION :
- T6NJ B1
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
- TYPE OF TEST :
- Open irritation test
- ROUTE OF EXPOSURE :
- Administration onto the skin
- SPECIES OBSERVED :
- Rodent - rabbit
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 790 mg/kg
- TOXIC EFFECTS :
- Behavioral - somnolence (general depressed activity) Behavioral - convulsions or effect on seizure threshold Behavioral - excitement
- TYPE OF TEST :
- LCLo - Lowest published lethal concentration
- ROUTE OF EXPOSURE :
- Inhalation
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 4000 ppm/4H
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Intraperitoneal
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 200 mg/kg
- TOXIC EFFECTS :
- Behavioral - somnolence (general depressed activity)
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- 674 mg/kg
- TOXIC EFFECTS :
- Behavioral - somnolence (general depressed activity) Behavioral - convulsions or effect on seizure threshold Behavioral - excitement
- TYPE OF TEST :
- LC50 - Lethal concentration, 50 percent kill
- ROUTE OF EXPOSURE :
- Inhalation
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- 9 gm/m3
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Intraperitoneal
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- 529 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Administration onto the skin
- SPECIES OBSERVED :
- Rodent - rabbit
- DOSE/DURATION :
- 410 uL/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Rodent - guinea pig
- DOSE/DURATION :
- 900 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 1072 mg/kg/9W-I
- TOXIC EFFECTS :
- Blood - change in clotting factors Blood - thrombocytopenia Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - true cholinesterase
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 1810 ug/kg/26W-I
- TOXIC EFFECTS :
- Blood - change in clotting factors Blood - changes in other cell count (unspecified) Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - true cholinesterase
MUTATION DATA
- TYPE OF TEST :
- Sex chromosome loss and nondisjunction
- TEST SYSTEM :
- Yeast - Saccharomyces cerevisiae
- DOSE/DURATION :
- 7400 ppm
- REFERENCE :
- MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 163,23,1986 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA ***NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X3811 No. of Facilities: 132 (estimated) No. of Industries: 6 No. of Occupations: 8 No. of Employees: 11240 (estimated) No. of Female Employees: 1234 (estimated)
- 毒理学数据:
1、急性毒性:大鼠经口LD50:790mg/kg;大鼠经吸入LCLo:4000ppm/4H;大鼠经腹腔LD50:200mg/kg;小鼠经口LD50:674mg/kg;小鼠经吸入LC50:9mg/m3;小鼠经腹腔LD50:529mg/kg;小鼠经皮肤接触LD50:410μL /kg;豚鼠经口LD50:900mg/kg;
2、其他多剂量毒性:大鼠经口TDLo:1072mg/kg/9W-I;大鼠经口TDLo:1810μg/kg/26W-I;
3、致突变性:酵母细胞的性染色体的损失和不分离试验:7400ppm。
4、属低毒类。毒理作用与吡啶相同,液体与皮肤接触数分钟即可引起皮肤变性。
5.急性毒性[15] LD50:790mg/kg(大鼠经口);529mg/kg(小鼠经口);410mg/kg(兔经皮)
6.刺激性[16]
家兔经皮:470mg,轻度刺激(开放性刺激试验)。
家兔经眼:750μg,重度刺激。
- 生态数据:
1.该物质对水有稍微的危害。
2.生态毒性[17] LC50:897mg/L(96h)(黑头呆鱼,动态)
3.生物降解性 暂无资料
4.非生物降解性[18] 空气中,当羟基自由基浓度为5.00×105个/cm3时,降解半衰期为15d(理论)。
MSDS
第一部分:化学品名称 |
分子结构与计算化学数据
分子结构数据
1、摩尔折射率:29.16
2、摩尔体积(cm3/mol):98.9
3、等张比容(90.2K):239.0
4、表面张力(dyne/cm):34.0
5、极化率:11.56
计算化学数据
1.疏水参数计算参考值(XlogP):无
2.氢键供体数量:0
3.氢键受体数量:1
4.可旋转化学键数量:0
5.互变异构体数量:无
6.拓扑分子极性表面积12.9
7.重原子数量:7
8.表面电荷:0
9.复杂度:52.1
10.同位素原子数量:0
11.确定原子立构中心数量:0
12.不确定原子立构中心数量:0
13.确定化学键立构中心数量:0
14.不确定化学键立构中心数量:0
15.共价键单元数量:1