2,3-bis(2-sulfanylethylsulfanyl)propane-1-thiol
C7H16S5
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Identification
- CAS Number
- 131538-00-6
- EC Number
- 411-290-7
- UN Number
- 3082
- Index Number
- 016-076-00-3
- PubChem CID
- 21900456
Physical-chemical properties
- Molecular Formula
- C7H16S5
- Molar Mass
- 260.50 g/mol
- IUPAC Name
- 2,3-bis(2-sulfanylethylsulfanyl)propane-1-thiol
Chemical Identifiers
- InChI
- InChI=1S/C7H16S5/c8-1-3-11-6-7(5-10)12-4-2-9/h7-10H,1-6H2
- InChI Key
- CEUQYYYUSUCFKP-UHFFFAOYSA-N
Overview
2,3-bis(2-sulfanylethylsulfanyl)propane-1-thiol (CAS 131538-00-6) is a polysulfide organic compound with multiple thiol functional groups and chelating properties. This specialized organosulfur compound features a unique molecular structure containing five sulfur atoms distributed across thiol and sulfanyl groups, making it particularly valuable in industrial applications requiring strong metal coordination and reducing capabilities. With a molecular formula of C7H16S5 and molecular weight of 260.5 g/mol, this pentasulfide compound exhibits distinctive chemical reactivity patterns characteristic of polythiol systems. The compound presents significant safety considerations, classified under multiple hazard categories including acute toxicity (Category 4), specific target organ toxicity following repeated exposure (Category 2), and severe aquatic toxicity for both acute and chronic exposure scenarios. These classifications necessitate appropriate handling protocols, including proper ventilation systems and personal protective equipment. The GHS pictograms GHS07, GHS08, and GHS09 indicate health hazards, serious health impacts, and environmental dangers respectively, while the ADR Class 9 designation covers its transport as a miscellaneous dangerous good. Industrial applications primarily leverage the compound's multiple thiol functionalities for metal complexation processes, corrosion inhibition systems, and specialized chemical synthesis pathways. Its pentasulfide structure makes it particularly effective in applications requiring strong sulfur-metal interactions, distinguishing it from simpler organosulfur compounds. Unlike structurally different compounds such as 3-(4-chlorophenyl)-1-methoxy-1-methylurea, this polysulfide offers unique coordination chemistry advantages in metallurgical and surface treatment applications. OYSI maintains reliable supply chains for this technical grade compound, supporting European industrial customers with consistent quality and regulatory compliance documentation.
Safety & Classification
Acute Tox. 4 *; STOT RE 2 *; Aquatic Acute 1; Aquatic Chronic 1
GHS Pictograms
HHazard Statements (H-Statements)
Describe the nature and severity of the hazard
Classification according to CLP Regulation (EC) No 1272/2008. The complete list of hazard and precautionary statements can be found in the Safety Data Sheet (SDS).
First Aid Measures
Ingestion
Measures if substance is accidentally swallowed
First Aid Actions
- +P301IF SWALLOWED:
- +P330Rinse mouth.
- +P331Do NOT induce vomiting.
- +P310Immediately call a POISON CENTER/doctor.
Related hazard statements:
General Measures
Emergency 112 | Poison Control: +49 30 19240 (DE), +33 1 45 42 59 59 (FR), +31 30 274 88 88 (NL)
First aid measures are based on CLP classification and associated P-statements. They do not replace the Safety Data Sheet (SDS). In case of emergency, always consult the full SDS and a physician.
Transport (ADR)
| UN Number | 3082 |
| ADR Class | 9 |
| Packing Group | III |
| Tunnel Code | - |
| Proper Shipping Name | 2,3-Bis(2-mercaptoethylsulfanyl)propan-1-thiol |
| Marine Pollutant | No |
Frequently Asked Questions
What is 2,3-bis(2-sulfanylethylsulfanyl)propane-1-thiol?
2,3-bis(2-sulfanylethylsulfanyl)propane-1-thiol is an organosulfur compound with the molecular formula C7H16S5 and CAS number 131538-00-6. This chemical features multiple thiol (-SH) groups and sulfur bridges in its structure, giving it a molecular weight of 260.5 g/mol. It belongs to the class of polysulfide compounds and is classified as hazardous with moderate acute toxicity and environmental concerns.
What are the physicochemical properties of 2,3-bis(2-sulfanylethylsulfanyl)propane-1-thiol?
2,3-bis(2-sulfanylethylsulfanyl)propane-1-thiol is a sulfur-rich organic compound with five sulfur atoms in its molecular structure. Due to the presence of multiple thiol groups, it likely exhibits a characteristic sulfur-containing odor and may appear as a viscous liquid or solid at room temperature. The compound's high sulfur content affects its solubility properties and chemical reactivity, particularly its tendency to form disulfide bonds.
What is 2,3-bis(2-sulfanylethylsulfanyl)propane-1-thiol used for?
2,3-bis(2-sulfanylethylsulfanyl)propane-1-thiol is primarily used as a chemical intermediate in specialized industrial applications. Its multiple thiol groups make it valuable in polymer chemistry, particularly as a cross-linking agent or chain extender in rubber and plastic manufacturing. The compound may also serve as a precursor for synthesizing other organosulfur compounds or as a reducing agent in specific chemical processes requiring multiple sulfur functionalities.
How to handle 2,3-bis(2-sulfanylethylsulfanyl)propane-1-thiol safely?
2,3-bis(2-sulfanylethylsulfanyl)propane-1-thiol requires careful handling due to its Acute Tox. 4 and STOT RE 2 classifications. Always wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Work in well-ventilated areas or under fume extraction to avoid inhalation. The Warning signal word indicates moderate hazard level, but proper safety protocols must be followed to prevent skin contact, ingestion, or prolonged exposure.
How to store 2,3-bis(2-sulfanylethylsulfanyl)propane-1-thiol correctly?
2,3-bis(2-sulfanylethylsulfanyl)propane-1-thiol should be stored in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Due to its multiple thiol groups, avoid contact with oxidizing agents and metals that could catalyze unwanted reactions. Store in tightly sealed original containers to prevent contamination and minimize odor release. Keep away from environmental discharge points due to its aquatic toxicity classification.
What to do in case of contact with 2,3-bis(2-sulfanylethylsulfanyl)propane-1-thiol?
In case of skin contact with 2,3-bis(2-sulfanylethylsulfanyl)propane-1-thiol, immediately remove contaminated clothing and wash the affected area thoroughly with soap and water for at least 15 minutes. If inhaled, move to fresh air immediately. In case of eye contact, rinse with clean water for at least 15 minutes. If ingested, do not induce vomiting and seek immediate medical attention. Always consult the safety data sheet for specific first aid measures.
How to dispose of 2,3-bis(2-sulfanylethylsulfanyl)propane-1-thiol appropriately?
2,3-bis(2-sulfanylethylsulfanyl)propane-1-thiol must be disposed of as hazardous waste through licensed waste management companies due to its environmental toxicity classification (Aquatic Acute 1, Aquatic Chronic 1). Never discharge into sewers, waterways, or soil. Contact authorized hazardous waste disposal services for proper treatment. Follow local and national regulations for hazardous chemical waste disposal, and maintain proper documentation of disposal activities for regulatory compliance.
How to transport 2,3-bis(2-sulfanylethylsulfanyl)propane-1-thiol?
2,3-bis(2-sulfanylethylsulfanyl)propane-1-thiol is classified as ADR Class 9 (Miscellaneous dangerous substances), Packing Group III for transportation purposes. This indicates it requires proper packaging, labeling, and documentation according to dangerous goods regulations. Use UN-approved packaging and ensure proper hazard identification on transport documents. While not extremely hazardous for transport, standard dangerous goods handling procedures must be followed during shipping and logistics operations.
Is 2,3-bis(2-sulfanylethylsulfanyl)propane-1-thiol subject to specific regulations?
2,3-bis(2-sulfanylethylsulfanyl)propane-1-thiol is subject to CLP regulation classification with GHS07, GHS08, and GHS09 pictograms indicating health and environmental hazards. While not currently listed as an SVHC (Substance of Very High Concern), it falls under REACH registration requirements for chemical substances in the EU. Users must comply with occupational health regulations due to its toxicity classifications and environmental protection measures due to its aquatic toxicity.
Where to buy 2,3-bis(2-sulfanylethylsulfanyl)propane-1-thiol in Europe?
2,3-bis(2-sulfanylethylsulfanyl)propane-1-thiol is available through OYSI, a specialized European chemical distributor offering high-quality chemical products to industrial and research customers. As a professional chemical supplier, OYSI provides proper documentation, safety data sheets, and regulatory compliance support for this specialized organosulfur compound. Contact OYSI directly to discuss availability, specifications, and delivery options for your specific requirements in European markets.
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2,3-bis(2-sulfanylethylsulfanyl)propane-1-thiol is a dangerous good. We support you with labeling, packaging, and transport documentation.
Data Sources
Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.