Viscose is a viscous organic liquid used to make rayon and cellophane. Viscose is becoming synonymous with rayon , a soft material commonly used in outer wear.
"Raw-material generally from wood pulp, Depending on what type of process, the rayon can end up as Rayon, Viscose , Modal , Lyocell or Bamboo."

Manufacturing

At first pulp is dissolved in caustic soda and after steeping it for a specified period of time it is shredded and allowed to age. Aging contributes to viscosity of viscose. The longer the ageing time the less viscosity it will have. The aged pulp is then treated with carbon disulfide to form a yellow-colored cellulose xanthate, which is dissolved in caustic soda again, but of a lower concentration. This is the starting stage of viscose formation. During the process an acetate dope is added to alkali cellulose which is necessary for the yarn lustre..

Difference between Viscose ,Rayon and others ?

Environmental profiles of Viscose or Rayon  and they different. The Fibres are not named for its raw-material, but for its process.This  is confusing  many people.

Producing  the yarn that is the basis for rayon or vicose, raw-material generally from wood pulp, has to go through a chemical process. The process is much like how one produces paper. Depending on what type of process, the rayon can end up as Rayon, Viscose , Modal , Lyocell or Bamboo.

If we use Tencel (which is lycocell) as an example, Tencel® produced by Austrian Lenzing uses eucalyptus from sustainable forestry, and they have a project working on sustainable forestry also for their other raw-materials. They have EU-flower classification for both Tencel® and Modal®. These are third- and second-generation viscose, and the lyocell-process is very efficient.Another raw-material being touted as eco-friendly is bamboo. As both forests and bamboo-plantations capture CO² while they grow, one could argue that they partly neutralize their production-process and CO²-emissions. But there have been concerns about bamboo-farming and the lack of transparency within China (where just about all bamboo is grown) has brought forward claims of over-taxation. Since many clothing companies and designers have boasted the use of bamboo fibres that are actually viscose or rayon, there has been even more confusion as to the eco-profile of this raw-material. If the bamboo is mechanically treated it can keep its raw-material name, if chemically treated it may not. The same way lyocell is not named eucalyptus...

Modal , Micromodal, Tencel are also textiles that one tends not to wash so often, which gives them a better eco-profile.

All Viscose Yarns and  Fabrics can be supplied from KMK MODA LTD located in Istanbul/Turkey