367-51-1
Sodium thioglycolate
CAS: 367-51-1
Molecular Formula: C2H5NaO2S
367-51-1 - Names and Identifiers
| Name | Sodium thioglycolate |
| Synonyms | NATG SODIUM THIOGLYCOLATE Sodium thioglycolate SODIUM THIOGLYCOLLATE SODIUM MERCAPTOACETATE sodium sulfanylacetate Sodium mercaptoacetate THIOGLYCOLIC ACID SODIUM SALT Thioglycolic acid sodium salt Thioglycolic acid, sodium salt Mercaptoacetic acid sodium salt MERCAPTOACETIC ACID SODIUM SALT Mercaptoaceticacidmonosodiumsalt Aceticacid,mercapto-,monosodiumsalt |
| CAS | 367-51-1 |
| EINECS | 206-696-4 |
| InChI | InChI=1/C2H4O2S.Na/c3-2(4)1-5;/h5H,1H2,(H,3,4);/q;+1/p-1 |
367-51-1 - Physico-chemical Properties
| Molecular Formula | C2H5NaO2S |
| Molar Mass | 116.11 |
| Melting Point | >300 °C (lit.) |
| Boling Point | 225.5°C at 760 mmHg |
| Flash Point | 99.8°C |
| Water Solubility | soluble |
| Solubility | Soluble in water, solubility in water: 1000g/l (20°C), slightly soluble in alcohol. |
| Vapor Presure | <0.1 hPa (25 °C) |
| Appearance | White to white-like powder |
| Color | White powder |
| Odor | Stench odour |
| Exposure Limit | ACGIH: TWA 1 ppm (Skin) |
| Merck | 14,8692 |
| BRN | 4569109 |
| pKa | 3.82[at 20 ℃] |
| PH | 6.7 (100g/l, H2O, 20℃) |
| Storage Condition | -20°C |
| Sensitive | Air Sensitive & Hygroscopic |
| MDL | MFCD00043386 |
| Use | Used as an analytical reagent, but also for the preparation of chemical hot liquid |
367-51-1 - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R22 - Harmful if swallowed R38 - Irritating to the skin R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S36 - Wear suitable protective clothing. S28 - After contact with skin, wash immediately with plenty of soap-suds. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| UN IDs | 2811 |
| WGK Germany | 1 |
| RTECS | AI7700000 |
| FLUKA BRAND F CODES | 3-10-13-23 |
| TSCA | Yes |
| HS Code | 29309070 |
| Hazard Class | 6.1(b) |
| Packing Group | III |
| Toxicity | LD50 i.p. in rats: 148 mg/kg, Freeman, Rosenthal, Fed. Proc. 11, 347 (1952) |
367-51-1 - Nature
Open Data Verified Data
white crystals. Deliquescence. Slightly special odor. Melting point> 300 °c. Soluble in water, slightly soluble in ethanol. Exposure to air or in case of iron discoloration, such as color yellowing and blackening has deteriorated, can not be used.
Last Update：2025-06-10 22:55:16
367-51-1 - Application
Open Data Verified Data
measurement of Analytical reagents such as iron, molybdenum, silver, tin, etc. Preparation of bacterial culture medium.
Last Update：2025-08-19 16:24:40
367-51-1 - Introduction
It has a special smell, and it has a slight smell when it is first made. Hygroscopicity. Exposed to the air or discolored by iron, if the color turns yellow and black, it has deteriorated and cannot be used. Soluble in water, solubility in water: 1000g/l (20°C), slightly soluble in alcohol. Median lethal dose (rat, abdominal cavity) 148mg/kg · irritation.
Last Update：2022-10-16 17:24:55
367-51-1 - Safety
Open Data Verified Data
rats were injected intraperitoneally with LD50:148mg/kg. Irritant, the oral harmful. Irritating to the eyes, respiratory system and skin. If contact to the eyes, skin, should be immediately washed with a large amount of water after the doctor. Should be filled with argon, sealed and protected from light and dry place.
Last Update：2022-01-01 09:27:23
367-51-1 - Reference Information
| pH indicator color change ph range | 6.5 - 8 at 114g/l at 25 c |
| LogP | -2.99 at 20℃ |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| introduction | sodium thioglycolate (TGA) is an important flotation inhibitor. Used as an inhibitor of copper minerals and pyrite in copper-molybdenum ore flotation, it has obvious inhibitory effect on copper, sulfur and other minerals, and can effectively improve the grade of molybdenum concentrate. Sodium thioglycolate, as an effective inhibitor of a new type of sulfide ore, has been successfully used in molybdenum production for many years and has completely replaced the highly toxic inhibitor sodium cyanide. |
| Use | Used as an inhibitor for copper ore and magnesite in copper-molybdenum ore flotation Used as an analytical reagent and also used for chemical cold The preparation of hot liquid Mainly used as an inhibitor for copper-molybdenum minerals and pyrite. It is an effective inhibitor for the realization of cyanide-free flotation of molybdite, which can replace sodium cyanide (highly toxic) and sodium sulfide, and selectively inhibit copper and sulfur symbiotic with molybdite, especially for copper sulfide and pyrite. This product is non-toxic and has played a positive role in the environmental protection of the production area. It is an environmentally friendly non-polluting mineral processing product actively recommended by the national environmental protection department. bacterial medium. Iron test. |
| production method | 1. cool the previously filtered thioglycolic acid to 5 ℃, slowly add sodium hydroxide solution of 40% with temperature below 5 ℃ while stirring. when the temperature reaches 35 ℃, hydrogen sulfide gas starts to escape. when the solution is pink and stable crystals are precipitated, stop adding sodium hydroxide: cool to room temperature, filter, the crystallization is soaked in ethanol, then washed until colorless, and dried below 80°C to obtain the finished product. |
Last Update：2024-04-10 21:04:24
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