Reaxis® C162 - Stannous Chloride, Anhydrous
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REAXIS® C162, Stannous Chloride Anhydrous, also known as Anhydrous Stannous Chloride or Tin Dichloride, is a versatile high metal content stannous inorganic tin that is used in several reactions, including use as a reducing agent and esterification catalyst. Anhydrous Stannous Chloride is produced to the highest standards utilizing high-purity tin metal while minimizing stannic and maximizing stannous content. Anhydrous stannous chloride is differentiated from the dihydrate form, known as REAXIS® C154, in a few different ways. REAXIS® C162 has a higher percentage of active stannous tin, is less hygroscopic and has a higher melting temperature than REAXIS® C154. The latter two characteristics result in a more stable product. Stability/free-flowability can be enhanced via blends with various products including silica, talc, and numerous solid resins. Stannous chloride, anhydrous, is present in a wide range of international regulatory inventories and can be used in formulations requiring USFDA compliance, making it a great choice for international formula development.
For more information, be sure to read our technical bulletins on the chemistry and toxicity of inorganic tins and bio-based catalysts, as well as our product spotlight on stannous chloride dihydrate and silica blends.
Technical Information
- Product Category Inorganic Tin
- Chemical Name Stannous Chloride, Anhydrous
- CAS Number 7772-99-8
Typical Specifications
Parameter | Range |
---|---|
Stannous Tin (%) | 62.2 |
Fe (ppm) | 50 Max |
Pb (ppm) | 75 Max |
International Regulatory Listings
- TSCA (US) Yes
- DSL (Canada) Yes
- REACH (EU) Yes
- AICS (Australia) Yes
- KECI (South Korea) Yes
- IECSC (China) Yes
- ENCS (Japan) Yes
- TCSI (Taiwan) Yes
- NZloC (New Zealand) Yes
- PICCS (The Philippines) Yes
- NDSL (Canada) No
Applications
Common end-use chemistries and applications for REAXIS® C162 include: esterifications, thermoplastic elastomers, personal care, surface finishing, oil well stimulation (acidizing additive), corrosion inhibition, and glass (silver mirroring and color modifier). As a catalyst, stannous chloride, anhydrous plays a crucial role in the esterification process, which is fundamental to the production of various poly- and monomeric esters. REAXIS® C162 is ideal in esterifications due to its high catalytically active stannous tin content and minimal moisture content. Stannous chloride anhydrous, as a reducing agent, finds diverse applications and benefits in various specialty chemical applications such as those applications requiring the reduction of silver used for mirror coatings. As a plating agent in electroplating, it serves as a primary reducing agent to deposit metal layers, such as silver or tin, onto a wide range of substrates. By donating electrons, REAXIS® C162 reduces the metal ions to their corresponding metallic forms, which adhere to the substrate’s surface. This process results in a uniform, thin coating that improves the final product’s appearance, durability, and corrosion resistance.
Reactivity
Due to its high tin concentration and small ligand, REAXIS® C162 is a very active esterification catalyst with comparable reactivity to common organotin catalysts such as dibutyl and monobutyl tin oxides. Given its inorganic tin nature, stannous chloride, anhydrous is stable at high reaction temperatures typical of many esterification reactions. Due to the presence of chlorides, color formation may be an issue with some ester formulations.
Package & Storage
- 55 lb (25 kg) plastic pail
REAXIS® C162 should be stored in the original packaging. The container should be closed tightly after each use to maximize shelf life. Characteristic of most inorganic tins (Sn(II)), the primary cause of instability would be oxidation, where the signs of oxidation would be the yellowing of the white crystals. Additionally, REAXIS® C162 is slightly hygroscopic.
Safety and Handling
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Hazard Classification (US SDS)
Section | Hazard Class | Category | Hazard Statement |
---|---|---|---|
A.10 | acute toxicity (oral) | 4 | H302 |
A.1I | acute toxicity (inhal.) | 4 | H332 |
A.2 | skin corrosion/irritation | 1 | H314 |
A.3 | serious eye damage/eye irritation | 1 | H318 |
A.4S | skin sensitization | 1 | H317 |
A.8R | specific target organ toxicity - single exposure (respiratory tract irritation) | 3 | H335 |
A.9 | specific target organ toxicity - repeated exposure | 2 | H373 |
B.16 | substance or mixture corrosive to metals | 1 | H290 |
Hazard Pictograms (US SDS)
Transportation Information (US SDS)
DOT | IMDG | ICAO | Environment Hazard | |
---|---|---|---|---|
UN Number | UN 3260 | UN 3260 | UN 3260 | non-environmentally hazardous acc. to the dangerous goods regulations |
UN Proper Shipping Name | Corrosive solid, acidic, inorganic, n.o.s. | CORROSIVE SOLID, ACIDIC, INORGANIC, N.O.S. | Corrosive solid, acidic, inorganic, n.o.s. | |
Transport Class | 8 | 8 | 8 | |
Packing Group | ll | ll | ll |
Primary Composition Substance(s)
- tin dichloride
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This information is provided to the best of our knowledge but without obligation. Reaxis is not liable for any incorrect or missing information. This data sheet becomes invalid upon publication of a new version. Please contact us for the latest version.