DITHIOOXALIC DIAMIDE
dithiooxamide
CAS: 79-40-3
Molecular Formula: C2H4N2S2
DITHIOOXALIC DIAMIDE - Names and Identifiers
| Name | dithiooxamide |
| Synonyms | RUBEANE Rubeanicacid Rubeanic acid RUBEANIC ACID dithiooxamide DITHIOOXAMIDE Dithio-oxamide RUBEAN-HYDROGEN Dithiooxalamide DITHIOOXALAMIDE ETHANEDITHIOAMIDE ethanebis(thioamide) DITHIOOXALIC DIAMIDE dithiono-oxalicacidiamide |
| CAS | 79-40-3 |
| EINECS | 201-203-9 |
| InChI | InChI=1/C2H4N2S2/c3-1(5)2(4)6/h(H2,3,5)(H2,4,6) |
| InChIKey | OAEGRYMCJYIXQT-UHFFFAOYSA-N |
DITHIOOXALIC DIAMIDE - Physico-chemical Properties
| Molecular Formula | C2H4N2S2 |
| Molar Mass | 120.2 |
| Density | 1.353 (estimate) |
| Melting Point | ≥300°C(lit.) |
| Boling Point | 287.76°C (estimate) |
| Flash Point | 106.2°C |
| Water Solubility | Soluble in alcohols. Slightly soluble in water. Insoluble in ether |
| Solubility | ethanol: soluble40mg/10 mL, clear, red |
| Vapor Presure | 0.0197mmHg at 25°C |
| Appearance | Brown crystalline powder |
| Color | Orange to Amber to Dark red |
| Merck | 14,8279 |
| BRN | 605577 |
| pKa | pK1:10.89 (25°C) |
| Storage Condition | Keep in dark place,Sealed in dry,Room Temperature |
| Stability | Stable. |
| Refractive Index | 1.5300 (estimate) |
| MDL | MFCD00004941 |
| Physical and Chemical Properties | Red Crystal or crystalline powder. Melting point 41. Decomposition at 200 °c. Soluble in alcohol and concentrated sulfuric acid in red. Slightly soluble in water, insoluble in ether. Can sublimate. |
| Use | Used as an analytical reagent |
DITHIOOXALIC DIAMIDE - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R22 - Harmful if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | 36/37 - Wear suitable protective clothing and gloves. |
| WGK Germany | 3 |
| RTECS | RP1575000 |
| TSCA | Yes |
| HS Code | 29309070 |
| Toxicity | LD50 orally in Rabbit: 500 mg/kg |
DITHIOOXALIC DIAMIDE - Reference
| Reference Show more | 1. Pan, Xiaowei, et al. "Functional porous organic polymer with high S and N for reversible iodine capture." Microporous and Mesoporous Materials 300 (2020): 110161.https://doi.org/10.1016/j.micromeso.2020.110161 2. [IF=5.455] Xiaowei Pan et al."Functional porous organic polymer with high S and N for reversible iodine capture."Micropor Mesopor Mat. 2020 Jun;300:110161 |
DITHIOOXALIC DIAMIDE - Introduction
Can sublimate. Decompose at about 200 ℃. Slightly soluble in water, soluble in ethanol, acetone, and chloroform, etc., insoluble in ether. It is red when dissolved in concentrated sulfuric acid. In ammonia solution, it forms water-insoluble colored complexes with Co2, Ni2, Pd2, Cu2, Ru3 and Fe3.
Last Update：2022-10-16 17:28:55
DITHIOOXALIC DIAMIDE - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Introduction | dithioxalyl amide can sublimate, decompose at about 200 ℃, slightly soluble in water, soluble in ethanol, acetone, and chloroform, etc., insoluble in ether. Dithioxalyl ammonia is red in concentrated sulfuric acid. Dithioxalyl amide forms water-insoluble colored complexes with Co2, Ni2, Pd2, Cu2, Ru3 and Fe3 in an ammoniacal solution. |
| Application | dithioxalyl amide for photometric turbidity determination of copper, nickel, cobalt, it can also be used for the determination of copper by spectrophotometry or potentiometric titration, and can be qualitatively detected Co2, Cu2, Ni2, ru3. |
| preparation | concentrated aqueous ammonia was added to the concentrated copper sulfate solution with stirring until the precipitated copper hydroxide was re-dissolved. After cooling, potassium cyanide solution was added slowly with constant stirring until the blue color disappeared. Hydrogen sulfide gas obtained by reacting sodium sulfide and hydrochloric acid was then introduced into the reaction solution. Hydrogen sulfide: Cyanogen = 3:1 was controlled, stirred evenly, then cooled thoroughly, allowed to stand, and filtered. The obtained crystals were washed with cold water, and recrystallized from ethanol to obtain the final dithioxalyl amide. |
| Use | is used to identify bismuth, cobalt, copper, iron, nickel, tungsten and ruthenium. It is also useful as a stabilizer for vitamin C solutions. used as analytical reagent |
| production method | from the reaction of Cyanogen gas and hydrogen sulfide gas into ethanol at the same time. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 02:00:11
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