硫代乙醇酸(TGA)

硫代乙醇酸(TGA)用途

用途一：用作化学试剂用途二：主要用作毛毯整理剂及冷烫液的原料用途三：TGA既具羟酸的反应特征，又具巯基的反应特征，其中最重要的反应是与二硫化物之间的反应。特别是碱性条件下与头发中的胱氨酸反应，切断胱氨酸的（-S-S-）键，生成易于卷曲的半胱氨酸。主要用作卷发剂、脱毛剂、聚氯乙烯低毒或无毒稳定剂、聚合反应的引发剂、加速剂及链转移剂、金属表面处理剂。此外，巯基乙酸是检定铁、钼、铝、锡等的敏感试剂；也可作为聚丙烯加工成型时的结晶成核剂以及涂料、纤维的改性剂、毛毯速理剂用途四：铁、钼、银、锡的灵敏试剂。其铵盐及钠盐用作卷发冷烫剂，钙盐为脱毛剂

硫代乙醇酸(TGA)名称

[ CAS 号 ]:
68-11-1

[ 中文名 ]:
硫代乙醇酸

[ 英文名 ]:
Mercaptoacetic acid

[中文别名 ]:

[英文别名 ]:

Thiovanic acid
mercaptoacetic
Thioglycolate
2-mercaptoethanoic acid
thioglycolic
Mercaptoacetic acid
TGA
Thiovanie acid
usafcb-35
2-mercapto acetic acid

硫代乙醇酸(TGA)物理化学性质

[ 密度 ]:
1.3±0.1 g/cm3

[ 沸点 ]:
225.5±0.0 °C at 760 mmHg

[ 熔点 ]:
−16 °C(lit.)

[ 分子式 ]:
C₂H₄O₂S

[ 分子量 ]:
92.117

[ 闪点 ]:
99.8±22.6 °C

[ 精确质量 ]:
91.993202

[ PSA ]:
76.10000

[ LogP ]:
0.09

[ 外观性状 ]:
透明液体

[ 蒸汽密度 ]:
3.2 (vs air)

[ 蒸汽压 ]:
0.0±0.9 mmHg at 25°C

[ 折射率 ]:
1.503

[ 储存条件 ]:
库房通风低温干燥,与氧化剂、碱类分开存放

[ 水溶解性 ]:
soluble

硫代乙醇酸(TGA)MSDS

详细MSDS(安全技术说明书)

硫代乙醇酸(TGA)毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: AI5950000

CHEMICAL NAME :: Acetic acid, mercapto-

CAS REGISTRY NUMBER :: 68-11-1

BEILSTEIN REFERENCE NO. :: 0506166

LAST UPDATED :: 199712

DATA ITEMS CITED :: 32

MOLECULAR FORMULA :: C2-H4-O2-S

MOLECULAR WEIGHT :: 92.12

WISWESSER LINE NOTATION :: SH1VQ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: Standard Draize test

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Human

REFERENCE :: INMEAF Industrial Medicine. (Chicago, IL) V.1-18, 1932-49. For publisher information, see IOHSA5. Volume(issue)/page/year: 15,669,1946 ** ACUTE TOXICITY DATA **

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 114 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: ZHYGAM Zeitschrift fuer die Gesamte Hygiene und Ihre Grenzgebiete. (VEB Verlag Volk und Gesundheit, Neue Gruenstr. 18, Berlin DDR-1020, Ger. Dem. Rep.) V.1- 1955- Volume(issue)/page/year: 20,575,1974

TYPE OF TEST :: LC - Lethal concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: >620 ppm/7H

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: 85INA8 "Documentation of the Threshold Limit Values and Biological Exposure Indices," 5th ed., Cincinnati, OH, American Conference of Governmental Industrial Hygienists, Inc., 1986 Volume(issue)/page/year: 6,1541,1991

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 70 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: ZHYGAM Zeitschrift fuer die Gesamte Hygiene und Ihre Grenzgebiete. (VEB Verlag Volk und Gesundheit, Neue Gruenstr. 18, Berlin DDR-1020, Ger. Dem. Rep.) V.1- 1955- Volume(issue)/page/year: 20,575,1974

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 242 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: ZHYGAM Zeitschrift fuer die Gesamte Hygiene und Ihre Grenzgebiete. (VEB Verlag Volk und Gesundheit, Neue Gruenstr. 18, Berlin DDR-1020, Ger. Dem. Rep.) V.1- 1955- Volume(issue)/page/year: 20,575,1974

TYPE OF TEST :: LCLo - Lowest published lethal concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 7 mg/m3/2H

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: 85GMAT "Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure," Izmerov, N.F., et al., Moscow, Centre of International Projects, GKNT, 1982 Volume(issue)/page/year: -,111,1982

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 47 mg/kg

TOXIC EFFECTS :: Behavioral - tremor Behavioral - convulsions or effect on seizure threshold

REFERENCE :: SRTCAC Science Reports of the Research Institutes, Tohoku University, Series C: Medicine. (Tohoku University, Research Institute for Tuberculosis and Cancer, 4-1 Seiryo-machi, Sendai, Japan) V.1- 1949- Volume(issue)/page/year: 36(1-4),10,1989

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 138 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: ARZNAD Arzneimittel-Forschung. Drug Research. (Editio Cantor Verlag, Postfach 1255, W-7960 Aulendorf, Fed. Rep. Ger.) V.1- 1951- Volume(issue)/page/year: 31,1713,1981

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 145 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: NYKZAU Nippon Yakurigaku Zasshi. Japanese Journal of Pharmacology. (Nippon Yakuri Gakkai, c/o Kyoto Daigaku Igakubu Yakurigaku Kyoshitsu, Konoe-cho, Yoshida, Sakyo-ku, Kyoto 606, Japan) V.40- 1944- Volume(issue)/page/year: 60,278,1964

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 119 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: ZHYGAM Zeitschrift fuer die Gesamte Hygiene und Ihre Grenzgebiete. (VEB Verlag Volk und Gesundheit, Neue Gruenstr. 18, Berlin DDR-1020, Ger. Dem. Rep.) V.1- 1955- Volume(issue)/page/year: 20,575,1974

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 300 mg/kg

TOXIC EFFECTS :: Skin and Appendages - dermatitis, other (after systemic exposure)

REFERENCE :: GTPZAB Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1-36, 1957-1992. For publisher information, see MTPEEI Volume(issue)/page/year: 13(1),48,1969

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 100 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: BIJOAK Biochemical Journal. (Biochemical Soc. Book Depot, POB 32, Commerce Way, Colchester, Essex CO2 8HP, UK) V.1- 1906- Volume(issue)/page/year: 41,325,1947

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - guinea pig

DOSE/DURATION :: 126 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: 34ZIAG "Toxicology of Drugs and Chemicals," Deichmann, W.B., New York, Academic Press, Inc., 1969 Volume(issue)/page/year: -,586,1969

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - guinea pig

DOSE/DURATION :: 157 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: ZHYGAM Zeitschrift fuer die Gesamte Hygiene und Ihre Grenzgebiete. (VEB Verlag Volk und Gesundheit, Neue Gruenstr. 18, Berlin DDR-1020, Ger. Dem. Rep.) V.1- 1955- Volume(issue)/page/year: 20,575,1974

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Mammal - species unspecified

DOSE/DURATION :: 250 mg/kg

REFERENCE :: GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 39(4),86,1974 *** REVIEWS *** ACGIH TLV-TWA 3.8 mg/m3 (1 ppm) (skin) DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-AUSTRALIA:TWA 1 ppm (4 mg/m3) JAN 1993 OEL-BELGIUM:TWA 1 ppm (3.8 mg/m3) JAN 1993 OEL-DENMARK:TWA 1 ppm (5 mg/m3) JAN 1993 OEL-FINLAND:TWA 1 ppm (5 mg/m3);STEL 3 ppm (15 mg/m3) JAN 1993 OEL-FRANCE:TWA 1 ppm (5 mg/m3);Skin JAN 1993 OEL-HUNGARY:TWA 0.5 mg/m3;STEL 1 mg/m3 JAN 1993 OEL-RUSSIA:STEL 0.1 mg/m3;Skin JAN 1993 OEL-SWITZERLAND:TWA 1 ppm (4 mg/m3);Skin JAN 1993 OEL-UNITED KINGDOM:TWA 1 ppm (3.8 mg/m3);Skin 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 RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO THIOGLYCOLIC ACID-air:10H TWA 1 ppm (Sk) REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992 NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 83835 No. of Facilities: 5167 (estimated) No. of Industries: 10 No. of Occupations: 9 No. of Employees: 35238 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 83835 No. of Facilities: 2428 (estimated) No. of Industries: 10 No. of Occupations: 12 No. of Employees: 30055 (estimated) No. of Female Employees: 15141 (estimated)

硫代乙醇酸(TGA)安全信息

[ 符号 ]:

GHS05, GHS06

[ 信号词 ]:
Danger

[ 危害声明 ]:
H301 + H311 + H331-H314

[ 警示性声明 ]:
P280-P301 + P310 + P330-P303 + P361 + P353-P304 + P340 + P310-P305 + P351 + P338-P403 + P233

[ 个人防护装备 ]:
Faceshields;full-face respirator (US);Gloves;Goggles;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter

[ 危害码 (欧洲) ]:
T+:Verytoxic;

[ 风险声明 (欧洲) ]:
R24/25;R26;R34

[ 安全声明 (欧洲) ]:
S25-S27-S28-S45-S36/37-S28C-S23

[ 危险品运输编码 ]:
UN 1940 8/PG 2

[ WGK德国 ]:
1

[ RTECS号 ]:
AI5950000

[ 包装等级 ]:
II

[ 危险类别 ]:
8

[ 海关编码 ]:
2930909090

硫代乙醇酸(TGA)合成路线

详细合成路线

硫代乙醇酸(TGA)上下游产品

硫代乙醇酸(TGA)上游产品

硫代乙醇酸(TGA)下游产品

硫代乙醇酸(TGA)制备

1.由无机或有机含硫化合物与一氯乙酸的钠、钾盐反应则得。如：一氯乙酸与硫化钠、硫磺反应生成二硫二乙酸，然后用锌和酸还原；或硫代氨基甲酸酯与一氯乙酸反应，其产物经水解制得；一氯乙酸与硫脲反应，生成异硫脲代乙酸，然后用氢氧化钡转化沉淀，再用硫酸酸化制成巯基乙酸水溶液，经蒸发可制得60%-70%溶液，收率70%以上。

2.在温度不超过25℃下，将碳酸钠溶液加到氯乙酸中至ph值7～8，然后加入硫脲反应，生成乙酸脲，所得乙酸硫脲在保温78～80℃下与氢氧化钠反应2h，反应结束后冷却至40℃，加入浓盐酸至ph值为3，再用乙醚萃取，萃取所得乙醚层加入活性炭充分搅拌后过滤，滤液加锌粉后减压精馏，即得纯品硫代乙醇酸。
过程反应式为：

3.搅拌下将16%的氯乙酸水溶液与15%的硫氢化钾水溶液混合，ClCH2COOH∶KHS＝1∶ 2（摩尔比）。加热，加入与氯乙酸相同物质量的氯化钡饱和溶液，然后加入25%的浓氨水，搅拌均匀后，静置，过滤，滤液中加入等体积的浓盐酸，再用乙醚萃取，蒸馏除去乙醚，最后，在2000Pa蒸馏，收集104～106℃馏分，即得成品硫代乙醇酸。
反应式为：

4.硫氢化钠和氯乙酸在硫化氢和氮气的作用下制得。

5.氯乙酸、硫代硫酸钠与氢氧化钠合成，然后经酸解、萃取、蒸馏得到成品。

硫代乙醇酸(TGA)海关

[ 海关编码 ]: 2930909090

[ 中文概述 ]:
2930909090. 其他有机硫化合物. 增值税率:17.0%. 退税率:13.0%. 监管条件:无. 最惠国关税:6.5%. 普通关税:30.0%

[ 申报要素 ]: 品名, 成分含量, 用途

[ Summary ]:
2930909090. other organo-sulphur compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

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