Rung International Mumbai, Maharashtra

Food Dyes

Direct Dyes

Direct Dyes

Direct dyes offered by us are anionic dyes that come with substantively for cellulosic fibres. These are normally applied from aqueous dye bath that contain an Electrolyte, either:

With the dyeing process with direct dyes being very simple, the dyeing is carried out in neutral/slight alkaline dye bath at/near boiling point. But, here a separate after treatment like cationic dye fixing that helps in enhancing wet fastness is also required for most direct dyeing processes. Being salts of complex sulfonic acids, chemically more than 75% of all direct dyes are un-metalized Azo structures with a great majority being:

With ionic nature being anionic and soluble in water, these have affinity for wide variety of fibers like:

Further, these are also used as pH indicators and as biological stains. As these do not make any permanent chemical bond with cellulosic fibers, here, these are attached to it using:
The flat shape and length of these dyes also enable them to:
Solving wash fastness issue for Direct Dyes:
The quality of wash fastness is poor unless it is treated with suitable:
For overcoming this, a special after treatment process is used. Under this process, a cationic bulking agent ‘RETAYNE’ is used where this agent glues dyes into fibers.

Major types of Direct Dyes:

Anionic Direct Dyes:
These are used for:
Structural features:
The main structural features of Anionic Direct Dyes are:
Cationic Direct Dyes:
The main structural features of cationic direct dyes are:

Optical Brighteners

Optical Brighteners

We are also one of the leading names in the field of Optical brighteners which are also known as optical brightening agents. These have in them capacity to absorb light in violet/ultraviolet region of electromagnetic spectrum ad subsequently re-emit light in blue region. With the coloring matter, be it natural/present as contaminant in fiber being generally decolorized by different bleaching methods, the appearance of textile substrate is creamish after bleaching. Thus it is necessary that chemical treatment is done to neutralize yellow tint of textile fibers.

The usage areas of Optical brightening agents (OBA) include but are not limited to:
Arriving at optical brightening effect:
Optical brightening effect is gained by addition of light (meaning amount of light reflected by Fluorescent Whitening Agents absorbing high energy radiation in ultraviolet/violet region (330nm-380nm) on part of characteristic molecules and in turn emitting lower energy radiation in blue region). The same is visible through spectrum (400nm-450nm) and yields yellow appearance.

Characteristics:
Application of Optical Brighteners:
Optical brighteners are widely used in:

Dyestuffs

Dyestuffs

We are leading Manufacturer, Exporter of Reactive Dyes.

Food Dyes

Food Dyes

Food coloring dyes are also called color additives and acts as pigment/substance that imparts color when added to food or drink. These are made available in variety of forms comprising :
Food coloring is used in commercial food as well as in domestic cooking. Further, it also finds usage in a variety of non-food applications like :
Why Food Colors :
Colors are associated with certain flavors, where colors of food influence perceived flavor in products like candy, wine and others. The food color also simulate color perceived by consumers and are used as additives in foods for many reasons including:
These help in achieving :
Water soluble synthetic dyes :
These are permitted for application in food industry as well as in pharmaceutical and personal care applications. Some of the available forms of these dyes include:
As one of the leading names in offering Water Soluble Dyes for food industry, we ensure these are made available in:
Lake Pigments :
These Lake Pigments find application where dyes are unsuitable because of their solubility in water. Some common applications are:
These Lake Pigments are available in two main forms:
Our products provide customers with following advantages:

Tartrazine

Tartrazine
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    Bhavesh Mehta

    (Proprietor)

    Rung International

    Malad West, Mumbai, Maharashtra, India

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