sodium alginate extract from kelp in chemical

Brief Description
CAS No.: 9005-38-3 Other Names: algin MF: C6H7O6Na
Place of Origin: Shandong China (Mainland) Purity: accord with test Classification: General Reagents
Brand Name: kelp Model Number: industrial grade 
Delivery Terms & Packaging
Packaging Detail:n.t.25kgs/bag
Delivery Detail:within 30 days or as the case
Specifications
sodium alginate extract from kelp in chemical

business scope include :
sodium alginate,potassiumalginate;calcium alginate
lithium alginate;;ammonism alginate;;acid alginate

1.welding rods  

Coatings are applied to welding rods or electrodes to act as a flux and to control the conditions in the immediate vicinity of the weld, such as temperature or oxygen and hydrogen availability. The dry ingredients of the coating are mixed with sodium silicate (water glass) which gives some of the plasticity necessary for extrusion of the coating onto the rod and which also acts as the binder for the dried coating on the rod. However the wet silicate has no binding action and does not provide sufficient lubrication to allow effective and smooth extrusion. An additional lubricant is needed, and a binder which will hold the damp mass together before extrusion and maintain the shape of the coating on the rod during drying and baking. Alginates are used to meet these requirements.
 2.The quantities of alginates used

Alginate dosage is very dependent on the type of welding rod being coated and the extrusion equipment being used. For soluble alginates it may be 0.4-1.2% or low-hydrogen welding rods and 0.15-0.25% for acid and organigc types. For the thixotropic alginates, manufacturers often find it more effective to use a mixture of calcium alginate and sodium alginate with a total alginate content of 0.4-0.6% for low hydrogen electrodes.