Creating tomorrow s solutions. Pharmaceutical Factbook
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1 Creating tomorrow s solutions Colloidal Anhydrous SILICA I Pharma HDK Pharmaceutical Factbook
2 Welcome to the WACKER Family of Pharmaceutical Products
3 WACKER has been producing and refining its brand of HDK colloidal anhydrous silica for over 40 years. Our integrated closed-loop technology, statistical process control and highly efficient reactor dynamics produce exceptionally pure grades of inorganic, colloidal anhydrous silica. These grades are especially well suited for pharmaceutical applications. Fascinatingly Versatile Although HDK colloidal anhydrous silica is an established and highly successful product, WACKER continues to push forward with its R&D to seek new potential solutions for further boosting product performance and quality. The extensive selection of both hydrophobic and hydrophilic HDK grades and HDK dispersions offers highly versatile and comprehensive solutions for a wide range of pharmaceutical applications. Focused on Quality With our long experience in the control and vertical integration of the colloidal anhydrous silica manufacturing process, we are able to provide ultra-high purity products which are consistent from batch to batch, allowing our customers to enjoy uniform production performance. With competence centers in the major regions of the world, we are here to support your requirements. The HDK production sites are certified worldwide in accordance with the ISO 9001 and ISO standards, which are a constituent part of WACKER s Group certification. Unparalleled Support By spending about 5 6 % of sales on R&D, we are determined to support you with innovative research laboratories, scientific knowledge and advanced analytics. This dedication makes WACKER one of the most research-intensive chemical companies worldwide. HDK is a registered trademark of Wacker Chemie AG. 3
4 THE BASIC colloidal ANHYDROUS SILICA REACTION PROCESS PURITY of The highest class HDK colloidal anhydrous silica formation in a flame Reactor Molecules Protoparticles Primary particles Aggregates Agglomerates Air SiO 2 SiO 2 SiO 2 SiO 2 Particle diameter 5 50 nm nm >> 1 μm 1,200 1,500 C SiCl4 + 2H2 + O2 SiO2 + 4HCl Isolated primary particles do not exist as individual units outside the flame WACKER has been producing colloidal anhydrous silica for the world market for more than 40 years, and has continually optimized its production processes ever since. HDK is produced at multiple sites by an integrated, efficient and environmentally compatible process that saves energy and raw materials. Hydrophilic HDK with a Large Surface Area The production parameters are responsible for the excellent properties of hydrophilic, pure and odorless HDK. Colloidal anhydrous silica is formed by hydrolysis at over 1,000 C. This is achieved by introducing chlorosilanes into an oxyhydrogen flame, producing SiO 2 primary particles about 5 50 nanometers (10 9 m) in size. In the flame, the primary particles fuse together permanently to form large units, or aggregates (100 1,000 nm in size). That is to say, individual primary particles only exist in the reaction zone itself. On cooling, the aggregates mechanically entangle to form agglomerates, known as tertiary structures. The aggregates have sizes in the range of microns. HDK has a very high specific surface area (BET) because of the small diameters of its primary building blocks. The primary particles that are fused together in the aggregates finally arrange themselves into agglomerates. This inherently large surface area-to-mass ratio causes intense interparticulate interactions, which are the result of attractive dispersion and dipolar forces. And that is precisely the reason for the outstanding properties of HDK. 4
5 HDK colloidal anhydrous Silica Product Range Standard Grades Specific surface area (BET) [m 2 /g] Hydrophilic HDK Hydrophobic HDK ~ 50 HDK D05 ~ 100 HDK C10 ~ 130 HDK S13 HDK H13L ~ 150 HDK V15 HDK H15, HDK H17 ~ 200 HDK N20 HDK H18, HDK H20 HDK N20 Pharma HDK H2000 ~ 300 HDK T30 HDK H30 ~ 400 HDK T40 HDK dispersions and further special grades are available upon request WACKER only authorizes HDK Pharma grades for use in pharmaceutical applications. The use of other grades is not supported by WACKER. Consistency and Purity Typical analytical data of HDK Trace element impurities Element Measured levels (mg/kg) Element Ag < 2 K < 2 Al < 2 Mg < 2 As < 2 Mn < 2 Ba < 2 Mo < 2 Bi < 2 Na < 2 Ca < 2 Ni < 2 Cd < 2 Pb < 2 Co < 2 Sn < 2 Cr < 2 Sr < 2 Cu < 2 Ti < 2 Fe < 2 Zn < 2 Ge < 2 Zr < 2 Hg < 1 Total < 20 Measured levels (mg/kg) Inorganic impurities Element Cl < 100 Measured levels (mg/kg) Standard tests: BET surface area Sieve residue ph in a 4 % aqueous dispersion Typical general properties: Tap density: approx. 40 grams/liter Loss on drying (2 hours at 105 ºC): < 1.5 % SiO 2 content: > 99.8 % Analytical methods for elements: Flame AES and ICP < indicates the detection limit has been reached The figures are only intended as a guide and should not be used in preparing specifications. 5
6 HDK Excellent as an Excipient for optimum Quality Whether your primary goal is gaining a competitive edge, maximizing your product s capabilities or optimizing your production processes, HDK colloidal anhydrous silica is the right choice. We understand your needs precisely and develop integrated solutions to fit your particular market or product application. A typical tablet contains: Flavorings & colorings Lubricant, glidant & anti-adherent Binder Active ingredient Disintegrant Filler/diluent Filler/diluent HDK helps manage tablet dosage Binder HDK helps hold a tablet together Disintegrant HDK helps control disintegration Glidant HDK helps free-flow Lubricant HDK helps improve release properties Sorbent HDK helps as a moisture scavenger and adsorbs some liquid active ingredients 6
7 HDK Certified Quality Pharmaceutical Regulations Colloidal anhydrous silica is approved as an excipient in pharmaceutical applications. HDK N20 Pharma complies with pharmaceutical monographs and the specifications given in the corresponding monographs silica, colloidal anhydrous of the European Pharmacopeia and colloidal silicon dioxide of the US Pharmacopeia. HDK N20 Pharma meets the purity requirements for light anhydrous silicic acid in the monograph of the Japanese Pharmacopeia 16th edition (March 2011), as well as the purity requirements for colloidal anhydrous silica in the monograph of the British Pharmacopeia 2008, Volume II. Additional Information European Union Colloidal anhydrous silica may be used as a direct food additive in accordance with Regulations (EU) No and 1130/2011 (superseding Directive 95/2/EC). It is also approved as an additive in plastic food contact materials in compliance with Regulation (EU) No. 10/2011 (superseding Directive 2002/72/EC). HACCP HDK N20 Pharma is certified for HACCP. HDK N20 Pharma is in compliance with regulation Title 21, Code of Federal Regulations part as interpreted in Guidelines for Drug Master Files (HEW FDAO ). HDK N20 Pharma is fully registered a US Type IV Drug Master File. Kosher HDK N20 Pharma is Kosher certified for use in Kosher milk and meat products. 7
8 PerFormance attributes Solids and Powders Tablets, Capsules, Powders Improves product free-flow properties by reducing aerated density Improves compaction properties of tablets and capsules by coating larger raw materials Facilitates compression by reducing particle interaction Acts as a spacer between particles, distributed as a mono-particulate layer on the powder surface (reduces surface roughness) Improves solubility of certain APIs Adsorbs moisture from hygroscopic materials Adsorbs liquids. Can convert liquids into powders depending upon loading level Reduces incompatibility between different components of a preparation by encapsulating powdery substances Improved disintegration in dissolving tablets Prevents formation of powder bridges Gels, Suppositories and Transdermals Modifies and controls viscosity Stabilizes suspensions Stabilizes suppositories Improves gel clarity Improves and controls thickening Improves uniformity of raw material distribution in formulated products Liquids, Creams, Suspensions Modifies and controls viscosity Stabilizes gels and creams Stabilizes suspensions and emulsions Improves and controls thickening Prevents hard settling, sedimentation and striation in formulated products Enhances suspension and stops hard packing / settling in aerosols Production Process and End Product Incorporates cutting-edge expertise and production technologies Synthetic origin - not of animal origin thus infection with bovine spongiform encephalopathy (BSE) not expected to be present - not of plant origin thus contamination with genetically modified organisms (GMO) not expected to be present Substances such as herbicides, organic solvents, animal products, fungicides, insecticides, aflotoxins, dioxins, and furans are not added intentionally Does not form a culture medium for microbes 8
9 Packaging Pallets with Paper Bags HDK is available in multilayer valved paper bags which contain 10 kg of product. The bags are delivered on palettes which are shrink-wrapped with a polyethylene foil to protect the HDK against moisture. This allows the product to be stored without any moisture uptake. If the shrink foil is damaged or single bags are removed, care must be taken to protect the remaining bags/individual bags against moisture by either wrapping in plastic or other appropriate measures. Palletized and shrink-wrapped for good product protection, storage and handling Three-ply paper for added strength Bags are disposable 9
10 EXPERTISE AND SERVICE NETWORK ON FIVE CONTINENTS Sales and production sites, plus 20 technical centers, ensure you a local presence worldwide. WACKER is one of the world s leading and most research-intensive chemical companies, with total sales of 4.91 billion. Products range from silicones, binders and polymer additives for diverse industrial sectors to bio-engineered pharmaceutical actives and hyperpure silicon for semiconductor and solar applications. As a technology leader focusing on sustainability, WACKER promotes products and ideas that offer a high value-added potential to ensure that current and future generations enjoy a better quality of life based on energy effi ciency and protection of the climate and environment. Spanning the globe with five business divisions, operating 25 production sites, WACKER is currently active in over 100 countries. The Group maintains subsidiaries and sales offi ces in 29 countries across Europe, the Americas and Asia including a solidly established presence in China. With a workforce of 17,200, WACKER sees itself as a reliable innovation partner that develops trailblazing solutions for, and in collaboration with, its customers. WACKER also helps them boost their own success. Our technical centers employ local
11 specialists who assist customers worldwide in the development of products tailored to regional demands, supporting them during every stage of their complex production processes, if required. WACKER e-solutions are online services provided via our customer portal and as integrated process solutions. Our customers and business partners thus benefi t from comprehensive information and reliable service to enable projects and orders to be handled fast, reliably and highly effi ciently. Visit us anywhere, anytime around the world at: All figures are based on fiscal 2011.
12 Wacker Chemie AG Hanns-Seidel-Platz München, Germany Tel info@wacker.com e/10.12 supersedes 6287e/10.10 The data presented in this brochure are in accordance with the present state of our knowledge, but do not absolve the user from carefully checking all supplies immediately upon receipt. We reserve the right to alter product constants with the scope of technical progress or new developments. The information given in this brochure should be checked by preliminary trials because of conditions during processing over which we have no control, especially where other companies raw materials are also being used. The information provided by us does not absolve the user from the obligation of investigating the possibility of infringement of third parties rights and, if necessary, clarifying the position. Recommendations for use do not constitute a warranty, either express or implied, of the fitness or suitability of the product for a particular purpose.
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