PRODUCT
Description
1. Chemical properties and classification
Bismuththiol， The chemical name is 2,5-dimercapto-1,3,4-thiadiazole, which is a sulfur-containing heterocyclic organic compound. Its molecular formula is C ₂ H ₂ N ₂ S ∝, molecular weight is 150.25, and CAS number is 1072-71-5. In terms of chemical structure, the compound is centered around a 1,3,4-thiadiazole ring, with a thiol group (- SH) attached to each of the 2nd and 5th positions. This “double thiol+heterocyclic” structure endows it with strong coordination ability and reactivity. In chemical classification, it belongs to heterocyclic thiols and is often referred to as “Bismuththiol I” to distinguish it from its phenyl substituted derivative “Bismuththiol II”.
2. Physical characteristics and morphology
At room temperature, Bismuththiol is a white to pale yellow crystalline powder with a slight irritating odor. Its melting point is about 162 ° C (decomposition) and its density is about 1.8 g/cm ³. This compound is slightly soluble in water (with a solubility of 20 g/L at 20 ° C), easily soluble in methanol and alkaline solutions, but insoluble in non-polar organic solvents such as benzene and chloroform. In terms of storage, this compound is sensitive to air and is recommended to be sealed and stored in a cool and dry place under inert gas protection. Low temperature conditions of 2-8 ° C are more suitable for long-term storage.
3. Industry positioning and preparation background
Bismuththiol is a multifunctional fine chemical intermediate and analytical reagent, mainly prepared by reacting hydrazine with carbon disulfide under alkaline conditions in industry. Its most prominent feature is its specific chelating ability for heavy metal ions – the sulfur atom on the thiol group can form stable colored complexes with metal ions such as bismuth, copper, and lead (red when reacting with bismuth, brown when reacting with copper, and bright yellow when reacting with lead). This characteristic makes it a classic metal ion detection reagent in analytical chemistry, and its name “Bismuththiol” comes from this. At the same time, this compound is widely used in fields such as pharmaceutical synthesis, polymer material additives, and industrial corrosion prevention due to its unique molecular structure. It should be noted that this compound is toxic to aquatic organisms and has long-term and persistent effects. When used, it should be avoided from being released into the environment.
Product Images & Packaging
Bismuththiol Parameters
| Bismuththiol Chemical Properties |
| Melting point | 162 °C (dec.)(lit.) |
| Boiling point | 211.3±23.0 °C(Predicted) |
| density | 1.575 (estimate) |
| vapor pressure | 0.013Pa at 20℃ |
| refractive index | 1.5300 (estimate) |
| storage temp. | Store below +30°C. |
| form | Powder |
| pka | 5.66±0.20(Predicted) |
| color | Off-white to yellow |
| Water Solubility | 20 g/L (20 ºC) |
| λmax | 320nm(CH3CN)(lit.) |
| BRN | 113444 |
| InChI | 1S/C2H2N2S3/c5-1-3-4-2(6)7-1/h(H,3,5)(H,4,6) |
| InChIKey | BIGYLAKFCGVRAN-UHFFFAOYSA-N |
| SMILES | Sc1nnc(S)s1 |
The application of Bismuththiol
The main use of Bismuththiol
Bismuththiol plays an important role in various fields such as analysis and detection, pharmaceutical and chemical engineering, and industrial additives due to its unique bis mercapto heterocyclic structure, which combines strong coordination ability and chemical reactivity.
This is the classic and most distinctive application of Bismuththiol in the field of Analytical Chemistry. It is used as a highly-selective analytical reagent for the qualitative and quantitative detection heavy metal ions, such as bismuth and copper. Bismuththiol reacts with bismuth to produce red complexes. Copper ions can form brown complexes. Lead ions will form bright yellow precipitates. The presence of metal ions can be determined quickly by these characteristic color changes. This compound is used in photometric analysis for the colorimetric determinations of bismuth, as well as the photometric determinations of metal elements like antimony and palladium. Its high sensitivity and selectivity make it a valuable application for fields like environmental monitor, metallurgical analyses, and geological exploration.
Pharmaceutical and fine chemical industries
Bismuththiol is an important intermediate for synthesizing various bioactive molecules in the fields of medicine and fine chemicals. The thiadiazole ring structure is the core skeleton of many antibacterial, antifungal, and antiviral drug molecules. By further modifying its thiol functional group (such as alkylation, acylation), derivatives with different pharmacological activities can be prepared. In addition, Bismuththiol and its derivatives can also be used as catalyst ligands or reaction intermediates in organic synthesis, participating in the construction of complex sulfur-containing heterocyclic compounds. Although the specific listed drug information involves trade secrets, the widespread application of this compound in the pharmaceutical intermediate market fully demonstrates its core position.
Industrial additives and functional materials field
Bismuththiol plays an important role as an industrial additive in the fields of polymer materials and petrochemicals. It is widely used as a metal passivator in lubricating oil and engine oil, which can form stable complexes with metal ions such as copper and iron that have catalytic oxidation effects in the oil, passivating their catalytic activity, thereby inhibiting oil oxidation and deterioration, and extending the service life of lubricating oil. At the same time, it is also used as an antioxidant and corrosion inhibitor to protect metal components from corrosion. In the plastic and rubber industries, Bismuthhiol can be used as an anti-aging agent for polymer materials to improve their heat and oxidation stability. In addition, it can also be used for the production of photographic developing chemicals, flame retardants, and fuel additives. There are research reports that there have been cases of occupational allergic contact dermatitis in Bismuththiol’s production factory, reminding relevant practitioners to pay attention to protection.
The use of Bismuththiol deeply reflects the core value of sulfur-containing heterocyclic compounds in interdisciplinary applications. It is not only a “chromogenic probe” for identifying heavy metal ions in analytical laboratories, but also a “pharmaceutical cornerstone” for synthesizing complex drug molecules, and an “industrial guardian” for protecting engine oils and metal equipment. This structurally simple yet functionally diverse compound continues to play an indispensable role in various stages such as scientific exploration, pharmaceutical research and development, and industrial manufacturing.
Bismuththiol 's Procurement Guide
Procurement Guidelines
1. Sample Policy
We can provide a 2-3g free trial package (shipping fee required)
2. Batch procurement
Packaging: 25kg/bag; 220kg/barrel; Special packaging according to your needs
MOQ：1kg
3. Customized services
Concentration customization (90% -99%)
Paeonol’s outsourcing services
FAQ
The color reaction or precipitation can be used to detect bismuth, copper (brown), antimony (red), and lead (yellow).
It protects gears and bearings from heavy loads, while also inhibiting corrosion and passivating copper.
We supply >=99.0% purity industrial/analytical grade DMTD with low moisture and heavy metals.
Escrow and T/T in advance are highly recommended. We can accept Western Union, Money Gram and Paypal as well.
Related References
Manufacturer of Bismuththiol
Achievements
Advantage
Service
FAQ
Advice on Shipping
Achievements
Zhishang Bio is based in Shandong, serves the whole country, faces the world, and is determined to become an excellent supplier and service provider in the chemical industry.
As a top manufacturer of cosmetic raw materials, disinfectants, flavors and fragrances in China, we are committed to producing high-quality products and have won high praise from customers all over the world.
In the next 10 years or even longer, Zhishang Bio will always adhere to the tenet of quality first and reputation first, and devote itself to providing customers with thoughtful and perfect services.
As a professional Bismuththiol manufacturer, Zhi shang Bio has served more than 6,000 customers around the world. Because of our high-quality products and professional services, we have won high praise from most of our customers.
Advantage
Zhishang Bio is a professional enterprise engaged in the research and development, production, and sales of chemical raw materials. It has a strong supply chain system and strict quality control standards to ensure the provision of high-quality products with high purity and stability to customers.
Zhishang Bio’s core strength is its independent research and design capabilities. It has advanced production equipment, testing laboratories and can customize chemical raw materials to meet the market demands. This includes pharmaceuticals, electronic, coatings and agricultural applications.
Zhishang Bio’s supply chain management is based on long-term relationships with domestic and international suppliers of high quality to guarantee a stable supply, optimize logistic systems, and achieve efficient distribution. This helps reduce the cost of customer purchases.
We adhere to international environmental standards and we also adhere to the concept that environmental protection and safety production are important. All production processes must comply with these standards in order to guarantee that our products will be green and sustainable.
With a professional technical team and comprehensive after-sales service, Zhishang Bio can provide customers with precise technical support, solve application problems, and help customers enhance product competitiveness.
We are always customer-oriented and committed to becoming a trusted chemical raw material partner.
Service
Zhishang Biography is dedicated to using clients extensive and expert service, including chemical raw material. The customers will certainly receive hassle-free, efficient and one-stop options.
1. Custom-made Supply Solutions
Zhishang Bio provides tailored services for clients in the chemical basic material sector, including special bit dimension, solvent residue control, stability optimizations and more. Clients can personalize their services to satisfy details requirements in industries such as drugs, electronic devices, and finishings.
2. Strict quality assurance
Zhishang Bio utilizes advanced screening equipment and stringent quality examination procedures, in addition to various other files, to guarantee that every batch of products is certified with international criteria such ISO GMP, REACH, and so on. Customers are also given with full quality records and conformity documents.
The supply chain is secure
Zhishang Bio has actually established lasting calculated collaborations with worldwide makers of top notch raw materials to make certain a secure supply, maximize the storage facility and logistics system, and assistance both small-scale examinations and large orders. It adjusted to the changing requirements of clients by responding flexibly to these changes.
4. Technical support
Zhishang Bio’s technical group can offer suggestions on product applications, formula optimization and analysis of industry patterns to aid clients fix technological troubles during production and boost item efficiency.
5. Efficient after-sales service
Zhishang Bio provides complete monitoring, reacts to client requests and delivers promptly. This will certainly make certain customer complete satisfaction.
Zhishang Biography intends to help consumers expand their service by providing the very best solutions and chemical resources.
FAQ
DO YOU ACCEPT SAMPLE ORDER?
We will make samples before mass production. After the samples are approved by the department and users, we will start mass production. During the production process, we will carry out 100% inspection, and then carry out random inspection before packaging.
WHAT’S YOUR MOQ?
Our MOQ is 1kg. But usually we can also accept a smaller quantity, such as 100g, if you need it, provided that the sample fee is 100% paid.
IS THERE A DISCOUNT?
Different quantity has different discount.
HOW TO CONFIRM WHETHER THE PRODUCT QUALITY MEETS OUR NEEDS BEFORE PLACING AN ORDER?
You can consult us to get free samples of some products, you only need to pay the freight or arrange express delivery to us and get the samples. You can send us the product specifications and requirements you need, and we will manufacture products according to your requirements.
DO YOU SUPPLY PRODUCT REPORT?
Yes. We’ll give you product analysis report before shipping.
LEARN MORE ABOUT US
Shandong Look Chemical
Advice on Shipping
1. For products ≤50kg, we recommend using express delivery, which is usually called DDU service (discounted, convenient).
2. For products ≤500kg, we generally recommend air freight, which is usually called FOB, CFR or CIF service (fast and efficient).
3. For products >500kg, we generally recommend shipping by sea, which is usually called FOB, CFR or CIF service (economical, safe).
4. For high-value products, please choose air or express to ensure the safety of product transportation.
Company Info
Zhishang Bio company in China that exports chemicals, Cosmetic raw materials, and Intermediates for over 70 countries now.
And a range of 50,000 products with the best quality and competitive price to meet your different purchasing needs.
The company integrates research and development, production, and trade, with a modern production base, advanced testing equipment, and an experienced technical team to ensure that products reach industry-leading levels in purity, stability, and environmental friendliness.
