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Buy sulfur of the highest purity
High-purity sulfur from ChemPUR: various purity levels and forms for demanding applications.
Our Sulfur Product Range
Sulfur in many forms and purities
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Physical Properties
Melting Point
115.2 °C
Boiling Point
444.7 °C
Frequently Asked Questions
Our FAQs provide you with a quick overview of important topics related to our product range. If you have any further questions, we will of course also be happy to assist you personally.
Purchasing / Sales
We will be happy to advise you individually
What distinguishes sulfur from other elements?
Sulfur is a particularly versatile non-metal used in research, synthesis, and material development for numerous applications. Its strength lies primarily in forming stable compounds with many metals and non-metals. This makes sulfur suitable as a starting material for sulfides, sulfur-containing functional materials, and special synthesis processes.
For users, sulfur is particularly interesting when a reactive, lightweight, and well-characterizable element is needed. High-purity grades can be used, for example, in materials research, thin-film technology, or battery research, such as in the development of sulfur-containing cathode materials.
ChemPUR offers sulfur in various purity levels from 99.5+% to 99.999%, as well as in different physical forms. This allows the material to be specifically adapted to the respective application – from preparative synthesis to demanding research projects. Our expert team will be happy to assist you with questions regarding the appropriate purity, form, or specification.
Which sulfur compounds are available?
In addition to elemental sulfur, our product range also covers a number of inorganic and organic sulfur compounds that are regularly required in research and industry. These include, among others, sulfides, sulfates, sulfites, and thiosulfates of various metals and elements. Sulfur compounds such as sodium sulfide, ammonium sulfate, or copper sulfate are typical representatives available in the standard range or through our global procurement network.
For special applications, such as in semiconductor technology or catalysis research, less common compounds like metal sulfides can also be procured in defined purities. Those seeking specific compounds with specific purity requirements are invited to contact our expert team directly to clarify availability and specifications.
For which applications is sulfur used?
Sulfur is used in many areas as a starting material, reactant, or functional material component. In chemical synthesis, it serves, among other things, for the production of sulfur-containing compounds such as sulfides, polysulfides, thiols, or sulfonated intermediates. In materials research, sulfur is particularly relevant when metal or non-metal sulfides are to be specifically produced. Such materials are investigated, for example, for functional layers, optical materials, sensor technology, or semiconductor-related applications. High-purity sulfur can help minimize unwanted impurities in the reaction system.
Sulfur also plays an important role in battery research, particularly in the development of lithium-sulfur systems. There, it is investigated as an active cathode material. For analytical, pharmaceutical, or particularly sensitive research applications, correspondingly higher purity levels may be required. The suitable sulfur quality depends on the desired purity, form, and process control. Our expert team will be happy to assist you in selecting the appropriate sulfur product.
Is sulfur delivered worldwide?
ChemPUR delivers sulfur in the offered purities and forms to customers in Germany and internationally. Shipping is carried out in compliance with the transport regulations applicable to sulfur, as it is a flammable solid that must be classified and declared accordingly. For international deliveries, the respective valid import and export regulations of the destination country apply and are taken into account during order processing. Customers who regularly purchase larger quantities or have special logistical requirements can discuss this as part of a direct inquiry. Our ChemPUR expert team is personally available for questions regarding delivery conditions, packaging, and shipping methods.
Why is ChemPUR the right partner for sulfur?
Reliable material procurement begins with a supplier who not only knows the product but also understands the context of its use. ChemPUR is an owner-managed family business with ISO 9001:2015 certification, offering sulfur in several purity levels and forms from a broad, globally networked procurement system. You will not receive standardized information from a call center, but will speak directly with experienced specialists who can advise you on material science.
Should a required specification not be included in the standard range, our international dealer network enables the procurement of even rarer qualities or packaging. Customizations, such as in different grain sizes or purities, are also reviewed upon request. This combination of technical expertise, short decision-making processes, and flexible procurement makes ChemPUR a reliable partner for laboratories, research institutions, and industrial customers.
In what purities is sulfur available from ChemPUR?
ChemPUR offers sulfur in several defined purity levels. Sulfur powder with 99.5+% and 99.95+% is available, as well as sulfur pieces with 99.99% and 99.999%. This provides qualities for preparative and technical applications as well as high-purity variants for demanding research and analysis processes.
The degree of purity is particularly important when sulfur is used as a starting material in sensitive syntheses, in the production of sulfides, or in materials research. Lower impurities can help reduce side reactions, achieve reproducible results, and better control the composition of the final material.
Powder is particularly suitable for applications where good dispersibility or rapid reaction is desired. Pieces, on the other hand, are advantageous when defined handling, dosing, or particularly high purity is paramount. The most suitable sulfur quality depends on your application, the desired form, and the permissible impurities. Our expert team will be happy to assist you in selecting the appropriate purity level.
What forms of sulfur does ChemPUR offer?
We offer sulfur in two practically relevant forms: as powder and as pieces. Sulfur powder is available, among other things, with a grain size of < 45 µm and is particularly suitable for applications where good dispersibility, easy weighing, or rapid conversion in the reaction system is required.
Sulfur pieces with a size of < 12 mm, on the other hand, are advantageous when a more manageable, less dusty form is needed. They are particularly suitable for applications where defined quantities are used or high-purity qualities are to be specifically processed further. The choice of the appropriate form depends on the respective process. Powder offers advantages in syntheses, mixing processes, and applications with a high contact surface. Pieces are useful when handling, storage, or dosing are paramount. Our expert team will be happy to assist you in selecting the appropriate sulfur form and purity level.