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Soda ash light, Sodium carbonate (also known as washing soda, soda and soda crystals, and crystalline carbonate in monohydrate form such as Na 2 CO 3 ) is the water-soluble sodium salt of carbonic acid. It is usually found as a crystalline decahydrate that is easily absorbed to form a white powder, monohydrate. Pure sodium carbonate is a hygroscopic (absorbs moisture from the air) white, odorless powder. It has a very alkaline taste and forms a moderately simple solution in water. Sodium carbonate is well known domestically for its daily use as a water softener. Historically, vegetation in the Middle East has been mined from the ashes of plants grown in sodium-rich soils, such as semen from Scotland and seaweed from Spain. The ashes of these sodium-rich plants differed markedly from timber ashes (used to create potash), becoming known as “soda ash”. [12] Synthetically, from salt (sodium chloride) and limestone

Low maintenance requirements, ease of use and a long life time, make the Dynaco M2/M3 Power high-speed door an ideal exterior door for every industrial building, warehouse, hangar, production or transport facility. This high-speed door is wind resistant up to class 4 (M2) or class 3 (M3) of the European standard EN 12424. It remains operational even in bad weather. Combined with its fast door cycle it ensures smooth business activities at all times. Maximum height:H 5.500 mm Maximum width:W 5.500 mm (M2) - 9.000 mm (M3) Opening speed:up to 2,4 m/s (M2) - 1,4 m/s (M3) Closing speed:1,2 m/s (M2) - 0,6 m/s (M3)

The Dynaco S-535 Atex Category 3 Compact high-speed door is specifically designed for inside use in explosion sensitive environments. This interior high-speed roll-up door is approved by Apragaz, an official inspection authority for equipment used in potentially explosive atmospheres. All metal parts of the high-speed door are manufactured in stainless steel. All non-metallic parts are composed of antistatic or electrical conductive materials. These characteristics avoid the build up of static electricity that could generate sparks. Maximum height:H 5.500 mm Maximum width:W 5.500 mm Opening speed:maximum 1 m/s Closing speed:1 m/s