1,3,5-Triazine-2,4-diamine,6-chloro-N2,N4-diethyl-
- 中文别名:西玛津
- 中文释义:西玛津;西玛嗪;2-氯-4,6-二(乙胺基)-1,3,5-三嗪;2-氯-4,6-二(乙基氨基)-1,3,5-三嗪;6-氯-N,N-二乙基-1,3,5-三嗪-2,4-二胺;2-氯-4,6-双(乙胺基)均三氮苯;阿米津;2,4-双(乙氨基)-6-氯-1,3,5-三嗪;田保净;2-氯-4,6-二乙氨基-1,3,5-三嗪
- 英文别名:simazine;
2,4-Bis(ethylamino)-6-chloro-1,3,5-triazine;
6-chloro-N,N’-diethyl-1,3,5-triazine-2,4-diamine;
CAT;
DCT;
w6658;
azotop;
Framed;
H 1803;
2-chloro-4,6-diethylamino-1,3,5-triazine;
Simazine;
a 2079;
6-chloro-N2,N4-diethyl-1,3,5-triazine-2,4-diamine;
6-Chloro-N2,N4-diethyl-1,3,5-triazine-2,4-diamine
- CAS No.:122-34-9
- 分子式:
C7H12ClN5
- 分子量:201.66
- 精确分子量:201.07800
- PSA:62.73000
- MDL:MFCD00023174
- InChI:InChI=1/C7H12ClN5/c1-3-9-6-11-5(8)12-7(13-6)10-4-2/h3-4H2,1-2H3,(H2,9,10,11,12,13)
- 分子结构式:
物化性质
- 外观与性状:
- 白色粉末
- 密度:
- 1.302
- 熔点:
- 225°C
- 沸点:
- 365.8ºC at 760 mmHg
- 闪点:
- 100 °C
- 水溶解性:
- 0.0005 g/100 mL
- 折射率:
- 1.622
- 蒸汽压:
- 1.53E-05mmHg at 25°C
- 存储条件/存储方法:
- 库房通风低温干燥
- 其它信息:
1.性状:纯品为白色结晶。
安全信息
- 外观与性状:
- 白色粉末
- 密度:
- 1.302
- 熔点:
- 225°C
- 沸点:
- 365.8ºC at 760 mmHg
- 闪点:
- 100 °C
- 水溶解性:
- 0.0005 g/100 mL
- 折射率:
- 1.622
- 蒸汽压:
- 1.53E-05mmHg at 25°C
- 存储条件/存储方法:
- 库房通风低温干燥
- 其它信息:
1.性状:纯品为白色结晶。
毒理性
CHEMICAL IDENTIFICATION
- RTECS NUMBER :
- XY5250000
- CHEMICAL NAME :
- s-Triazine, 2-chloro-4,6-bis(ethylamino)-
- CAS REGISTRY NUMBER :
- 122-34-9
- BEILSTEIN REFERENCE NO. :
- 0010895
- LAST UPDATED :
- 199712
- DATA ITEMS CITED :
- 55
- MOLECULAR FORMULA :
- C7-H12-Cl-N5
- MOLECULAR WEIGHT :
- 201.69
- WISWESSER LINE NOTATION :
- T6N CN ENJ BM2 DM2 FG
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 :
- Standard Draize test
- ROUTE OF EXPOSURE :
- Administration into the eye
- SPECIES OBSERVED :
- Rodent - rabbit
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 971 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- TYPE OF TEST :
- LC50 - Lethal concentration, 50 percent kill
- ROUTE OF EXPOSURE :
- Inhalation
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 9800 mg/m3/4H
- 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 :
- Administration onto the skin
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- >5 gm/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- TYPE OF TEST :
- LDLo - Lowest published lethal dose
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- 5 gm/kg
- TOXIC EFFECTS :
- Behavioral - muscle weakness Gastrointestinal - hypermotility, diarrhea Kidney, Ureter, Bladder - urine volume increased
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Intravenous
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- 100 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 :
- Unreported
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 1390 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 :
- Oral
- SPECIES OBSERVED :
- Rodent - rabbit
- DOSE/DURATION :
- >5 gm/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 :
- >10200 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 :
- Oral
- SPECIES OBSERVED :
- Bird - pigeon
- DOSE/DURATION :
- >5 gm/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 :
- Bird - chicken
- DOSE/DURATION :
- >5 gm/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 :
- Mammal - species unspecified
- DOSE/DURATION :
- 2014 mg/kg
- TOXIC EFFECTS :
- Behavioral - somnolence (general depressed activity) Behavioral - muscle contraction or spasticity Skin and Appendages - hair
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Unreported
- SPECIES OBSERVED :
- Mammal - species unspecified
- DOSE/DURATION :
- 1400 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 :
- 43680 mg/kg/2Y-C
- TOXIC EFFECTS :
- Behavioral - food intake (animal) Blood - changes in platelet count Nutritional and Gross Metabolic - weight loss or decreased weight gain
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 10 gm/kg/7W-I
- TOXIC EFFECTS :
- Liver - other changes Blood - changes in erythrocyte (RBC) count Nutritional and Gross Metabolic - weight loss or decreased weight gain
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- 79800 mg/kg/95W-C
- TOXIC EFFECTS :
- Behavioral - food intake (animal) Blood - normocytic anemia Nutritional and Gross Metabolic - weight loss or decreased weight gain
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Mammal - dog
- DOSE/DURATION :
- 4550 mg/kg/13W-C
- TOXIC EFFECTS :
- Behavioral - food intake (animal) Nutritional and Gross Metabolic - weight loss or decreased weight gain
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Mammal - dog
- DOSE/DURATION :
- 910 mg/kg/52W-C
- TOXIC EFFECTS :
- Blood - normocytic anemia Nutritional and Gross Metabolic - weight loss or decreased weight gain
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Subcutaneous
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 16 gm/kg/61W-I
- TOXIC EFFECTS :
- Tumorigenic - equivocal tumorigenic agent by RTECS criteria Gastrointestinal - tumors Tumorigenic - tumors at site of application
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Subcutaneous
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- 35 gm/kg/87W-I
- TOXIC EFFECTS :
- Tumorigenic - equivocal tumorigenic agent by RTECS criteria Tumorigenic - tumors at site of application
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Oral
- DOSE :
- 3120 mg/kg
- SEX/DURATION :
- female 6-15 day(s) after conception
- TOXIC EFFECTS :
- Reproductive - Fertility - post-implantation mortality (e.g. dead and/or resorbed implants per total number of implants) Reproductive - Fertility - litter size (e.g. # fetuses per litter; measured before birth)
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Oral
- DOSE :
- 780 mg/kg
- SEX/DURATION :
- female 6-15 day(s) after conception
- TOXIC EFFECTS :
- Reproductive - Specific Developmental Abnormalities - musculoskeletal system
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Oral
- DOSE :
- 25 gm/kg
- SEX/DURATION :
- female 6-15 day(s) after conception
- TOXIC EFFECTS :
- Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus)
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Oral
- DOSE :
- 500 mg/kg
- SEX/DURATION :
- female 6-15 day(s) after conception
- TOXIC EFFECTS :
- Reproductive - Maternal Effects - other effects
- TYPE OF TEST :
- TCLo - Lowest published toxic concentration
- ROUTE OF EXPOSURE :
- Inhalation
- DOSE :
- 17 mg/m3/2H
- SEX/DURATION :
- female 7-14 day(s) after conception
- TOXIC EFFECTS :
- Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus) Reproductive - Specific Developmental Abnormalities - musculoskeletal system
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Oral
- DOSE :
- 975 mg/kg
- SEX/DURATION :
- female 7-19 day(s) after conception
- TOXIC EFFECTS :
- Reproductive - Maternal Effects - other effects
- TYPE OF TEST :
- Sex chromosome loss and nondisjunction
- TYPE OF TEST :
- Sex chromosome loss and nondisjunction
- TYPE OF TEST :
- Dominant lethal test
- TYPE OF TEST :
- Dominant lethal test
MUTATION DATA
- TYPE OF TEST :
- Mutation in mammalian somatic cells
- TEST SYSTEM :
- Rodent - mouse Lymphocyte
- DOSE/DURATION :
- 400 mg/L
- REFERENCE :
- NTIS** National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. Volume(issue)/page/year: PB84-138973 *** REVIEWS *** IARC Cancer Review:Animal Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 53,495,1991 IARC Cancer Review:Human Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 53,495,1991 IARC Cancer Review:Group 3 IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 53,495,1991 TOXICOLOGY REVIEW DTTIAF Deutsche Tieraerztliche Wochenschrift. (Hanover, Fed. Rep. Ger.) V.1-77, 1893-1970. Volume(issue)/page/year: 80,485,1973 *** U.S. STANDARDS AND REGULATIONS *** EPA FIFRA 1988 PESTICIDE SUBJECT TO REGISTRATION OR RE-REGISTRATION FEREAC Federal Register. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) V.1- 1936- Volume(issue)/page/year: 54,7740,1989 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-RUSSIA:STEL 2 mg/m3 JAN 1993 OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA ***NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - M4125 No. of Facilities: 29 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 173 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - M4125 No. of Facilities: 13 (estimated) No. of Industries: 1 No. of Occupations: 6 No. of Employees: 356 (estimated)
- 毒理学数据:
大鼠急性经口LD50>SOOOmg/kg;80%,制剂对家兔急性经皮LD50>100mg/kg
MSDS
化学品中文名称: | 西玛津;2-氯-4,6-二(乙胺基)-1,3,5-三嗪 |
化学品英文名称: | Simazine;2-Chloro-4,6-di(ethylamine)-1,3,5-triazine |
中文俗名或商品名: | |
Synonyms: | |
CAS No.: | 122-34-9 |
分子式: | C7H12ClN5 |
分子量: | 201.69 |
纯化学品 混合物 |
化学品名称:西玛津;2-氯-4,6-二(乙胺基)-1,3,5-三嗪 |
|
危险性类别: | 第6.1类毒害品 |
侵入途径: | 吸入 食入 经皮吸收 |
健康危害: | 本品为低毒除草剂。中毒症状有全身不适、头晕、口中有异味、嗅觉减退或消失。致突变、致畸和致癌试验为阳性。 |
环境危害: | 对环境有危害,对水体可造成污染。 |
燃爆危险: | 本品可燃。 |
皮肤接触: | 用肥皂水及清水彻底冲洗。就医。 |
眼睛接触: | 拉开眼睑,用流动清水冲洗15分钟。就医。 |
吸入: | 脱离现场至空气新鲜处。就医。 |
食入: | 误服者,饮适量温水,催吐。就医。 |
危险特性: | 不易燃烧。受高热分解,放出有毒的烟气。 |
有害燃烧产物: | 一氧化碳、二氧化碳、氮氧化物、氯化氢。 |
灭火方法及灭火剂: | 消防人员须戴好防毒面具,在安全距离以外,在上风向灭火。灭火剂:泡沫、干粉、砂土。 |
消防员的个体防护: | |
禁止使用的灭火剂: | |
闪点(℃): | |
自燃温度(℃): | |
爆炸下限[%(V/V)]: | |
爆炸上限[%(V/V)]: | |
最小点火能(mJ): | |
爆燃点: | |
爆速: | |
最大燃爆压力(MPa): | |
建规火险分级: | |
应急处理: | 隔离泄漏污染区,周围设警告标志,建议应急处理人员戴好防毒面具,穿化学防护服。不要直接接触泄漏物,小心扫起,避免扬尘,装入备用袋中。用水刷洗泄漏污染区,对污染地带进行通风。无法利用的应将其倒至空旷地方深埋。 |
操作注意事项: | 密闭操作,提供充分的局部排风。防止粉尘释放到车间空气中。操作人员必须经过专门培训,严格遵守操作规程。建议操作人员佩戴防尘面具(全面罩),穿透气型防毒服,戴橡胶手套。远离火种、热源,工作场所严禁吸烟。使用防爆型的通风系统和设备。避免产生粉尘。避免与氧化剂、酸类、碱类接触。配备相应品种和数量的消防器材及泄漏应急处理设备。倒空的容器可能残留有害物。 |
储存注意事项: | 储存于阴凉、通风的库房。远离火种、热源。防止阳光直射。包装密封。应与氧化剂、酸类、碱类分开存放,切忌混储。配备相应品种和数量的消防器材。储区应备有合适的材料收容泄漏物。 |
最高容许浓度: | 中 国 MAC:未制订标准前苏联MAC:2mg/m3 美国TLV—TWA:未制订标准美 |
监测方法: | |
工程控制: | 生产过程密闭,全面通风。 |
呼吸系统防护: | 生产操作或农业使用时,应该佩戴防尘口罩。必要时佩戴防毒面具。 |
眼睛防护: | 必要时戴安全防护眼镜。 |
身体防护: | 穿紧袖工作服,长筒胶鞋。 |
手防护: | 戴防护手套。 |
其他防护: | 工作现场禁止吸烟、进食和饮水。工作后,淋浴更衣。保持良好的卫生习惯。实行就业前和定期的体检。 |
外观与性状: | 无色结晶。 |
pH: | |
熔点(℃): | 225~227(分解) |
沸点(℃): | |
相对密度(水=1): | |
相对蒸气密度(空气=1): | |
饱和蒸气压(kPa): | 0.81X10(-9)/20℃ |
燃烧热(kJ/mol): | |
临界温度(℃): | |
临界压力(MPa): | |
辛醇/水分配系数的对数值: | |
闪点(℃): | |
引燃温度(℃): | |
爆炸上限%(V/V): | |
爆炸下限%(V/V): | |
分子式: | C7H12ClN5 |
分子量: | 201.69 |
蒸发速率: | |
粘性: | |
溶解性: | 难溶于水,微溶于二恶烷。 |
主要用途: | 用作农用除草剂,及分析农药残留量标准样品。 |
稳定性: | 在常温常压下 稳定 |
禁配物: | 强氧化剂、强酸、强碱。 |
避免接触的条件: | |
聚合危害: | 不能出现 |
分解产物: | 一氧化碳、二氧化碳、氮氧化物、氯化氢。 |
急性毒性: | LD50:5000mg/kg(大鼠经口);>5000mg/kg(小鼠经口) LC50: |
急性中毒: | |
慢性中毒: | |
亚急性和慢性毒性: | |
刺激性: | 家兔经皮:开放性刺激试验, 500mg,轻度刺激。家兔经眼:80mg,中度刺激。 |
致敏性: | |
致突变性: | |
致畸性: | |
致癌性: | |
生态毒理毒性: | |
生物降解性: | |
非生物降解性: | |
生物富集或生物积累性: | |
危险货物编号: | 61898 |
UN编号: | 2763 |
包装标志: | |
包装类别: | |
包装方法: | 塑料袋或二层牛皮纸袋外全开口或中开口钢桶;两层塑料袋或一层塑料袋外麻袋、塑料编织袋、乳胶布袋;塑料袋外复合塑料编织袋(聚丙烯三合一袋、聚乙烯三合一袋、聚丙烯二合一袋、聚乙烯二合一袋);塑料袋或二层牛皮纸袋外普通木箱;螺纹口玻璃瓶、塑料瓶、复合塑料瓶或铝瓶外普通木箱;塑料瓶、两层塑料袋或两层牛皮纸袋(内或外套以塑料袋)外瓦楞纸箱。 |
运输注意事项: | 储存于阴凉、通风仓间内。远离火种、热源。专人保管。保持容器密封。防潮、防晒。应与碱类、酸类、食用化工原料等分开存放。不能与粮食、食物、种子、饲料、各种日用品混装、混运。操作现场不得吸烟、饮水、进食。搬 |
RETCS号: | |
IMDG规则页码: | |
国内化学品安全管理法规: | 化学危险物品安全管理条例 (1987年2月17日国务院发布),化学危险物品安全管理条例实施细则 (化劳发[1992] 677号),工作场所安全使用化学品规定 ([1996]劳部发423号)等法规,针对化学危险品的安全使用、生产、储存、运输、装卸等方面均作了相应规定;常用危险化学品的分类及标志 (GB 13690-92)将该物质划为第6.1 类毒害品。 |
国际化学品安全管理法规: | |
参考文献: | 1.周国泰,化学危险品安全技术全书,化学工业出版社,1997 2.国家环保局有毒化学品管理办公室、北京化工研究院合编,化学品毒性法规环境数据手册,中国环境科学出版社.1992 3.Canadian Centre for Occupational Health and Safety,CHEMINFO Database.1998 4.Canadian Centre for Occupational Health and Safety, RTECS Database, 1989 |
填表时间: | 年月日 |
填表部门: | |
数据审核单位: | |
修改说明: | |
其他信息: | 6 |
MSDS修改日期: | 年月日 |
海关数据
中国海关编码:2933699011
- 概述:
- 2933699011 西玛津,莠去津,扑灭津,草达津等〔包括特丁津,氰草津,环丙津,甘扑津,甘草津〕。监管条件:S(进出口农药登记证明)。增值税率:17.0%。退税率:9.0%。最低关税:6.5%。普通关税:20.0%
- 申报要素:
- 品名, 成分含量, 用途, 乌洛托品请注明外观, 6-己内酰胺请注明外观, 签约日期
- 监管条件:
- S.进出口农药登记证明
- 摘要/Summary:
- 2933699011 2-((4-chloro-6-(ethylamino)-1,3,5-triazin-2-yl)amino)-2-methylpropanenitrile。supervision conditions:s(import or export registration certificate for pesticides)。VAT:17.0%。tax rebate rate:9.0%。MFN tarrif:6.5%。general tariff:20.0%
分子结构与计算化学数据
分子结构数据
五、分子性质数据:
1、摩尔折射率:48.05
2、摩尔体积(cm3/mol):151.1
3、等张比容(90.2K):406.4
4、表面张力(dyne/cm):52.3
5、介电常数:
6、偶极距(10-24cm3):
7、极化率:19.05
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:2
3.氢键受体数量:5
4.可旋转化学键数量:4
5.互变异构体数量:5
6.拓扑分子极性表面积62.7
7.重原子数量:13
8.表面电荷:0
9.复杂度:131
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