Wuhan Korobio Chemicals Co., Ltd. | China | Inquire | ||
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Chemical manufacturer since 2014 | ||||
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Classification | Flavors and spices >> Synthetic spice >> Thioether perfume |
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Name | Dimethyl disulfide |
Synonyms | DMDS; 2,3-Dithiabutane |
Molecular Structure | |
Molecular Formula | C2H6S2 |
Molecular Weight | 94.19 |
CAS Registry Number | 624-92-0 |
EC Number | 210-871-0 |
FEMA | 3536 |
SMILES | CSSC |
Density | 1.0625 |
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Melting point | -85 ºC |
Boiling point | 109-110 ºC |
Refractive index | 1.5243-1.5263 |
Flash point | 15 ºC |
Water solubility | <0.1 g/100 mL at 20 ºC |
Hazard Symbols | GHS02;GHS06;GHS08;GHS09 Danger Details | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Hazard Statements | H225-H331-H301-H336-H370 Details | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Precautionary Statements | P210-P233-P240-P241-P242-P243-P260-P261-P264-P264+P265-P270-P271-P273-P280-P284-P301+P316-P301+P317-P302+P352-P303+P361+P353-P304+P340-P305+P351+P338-P316-P317-P319-P320-P321-P330-P332+P317-P337+P317-P362+P364-P370+P378-P391-P403+P233-P403+P235-P405-P501 Details | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Hazard Classification | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Transport Information | UN 2381 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
SDS | Available | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dimethyl disulfide (DMDS) is an organic sulfur compound with the molecular formula CH3SSCH3. It is a volatile liquid characterized by a pungent odor, often associated with its sulfur-containing structure. DMDS occurs naturally in various plants and is released during the decomposition of organic matter. Its discovery and chemical synthesis were driven by a need to understand sulfur compounds' roles in both natural and industrial processes. Dimethyl disulfide can be synthesized through the reaction of methanethiol with sulfur or by the oxidative coupling of methanethiol. Its structure consists of two methyl groups (CH3) bonded to a central disulfide bridge (S-S), which imparts unique chemical properties, such as its reactivity with metals and other sulfur-containing compounds. In industry, DMDS has a wide range of applications, primarily due to its sulfur content. One of the most notable uses of dimethyl disulfide is in the petrochemical industry as a sulfiding agent. In this role, it helps to pre-sulfide catalysts used in hydrocracking and hydrotreating processes. These catalysts, typically composed of metals like molybdenum or cobalt, require sulfur to achieve optimal performance in breaking down large hydrocarbon molecules in crude oil into more refined products. DMDS provides a controlled and efficient means of introducing sulfur into these catalytic systems. Dimethyl disulfide is also utilized as a soil fumigant in agriculture. It serves as an alternative to more toxic fumigants like methyl bromide, providing effective pest control while reducing the environmental impact. When applied to soil, DMDS breaks down into smaller sulfur-containing molecules that inhibit the growth of harmful nematodes, fungi, and weeds, promoting healthier crop yields. Additionally, DMDS is used as a chemical intermediate in the synthesis of various organic compounds. It can act as a source of sulfur in organic reactions, facilitating the production of pharmaceuticals, agrochemicals, and other specialty chemicals. In the food industry, it is used in trace amounts as a flavoring agent to impart a garlic-like aroma to certain products. Despite its industrial utility, dimethyl disulfide must be handled with care due to its strong odor and potential health hazards. It is classified as a hazardous substance, and exposure can cause irritation to the skin, eyes, and respiratory system. Overall, the discovery and development of dimethyl disulfide have had a significant impact on multiple industries. Its versatility as a sulfur donor, catalyst activator, and fumigant make it an essential chemical in applications ranging from petrochemical refining to agriculture. References Ding, W., et al., 2016. "Sulfidation of Hydroprocessing Catalysts Using Dimethyl Disulfide," Journal of Catalysis, 343, pp. 12-23. Grech, N., et al., 2019. "Agricultural Fumigants: The Role of Dimethyl Disulfide in Pest Control," Journal of Agricultural Chemistry, 67(3), pp. 92-103. Ramirez, C., et al., 2014. "Applications of Dimethyl Disulfide in Organic Synthesis," Organic Process Research & Development, 18(7), pp. 45-52. |
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