NGHI SON CHEMICALS EXPORT IMPORT COMPANY LIMITED

Citric Acid Monohydrate 99%Min.(C6H8O7.H2O)

Chemical Name :  Citric Acid Monohydrate 99%Min

Formula :               C6H8O7.H2O 

Cas No. :               5949-29-1

UN No. :                UN1090

Package :              25Kg/Kraft Paper

Origin :                  China, Australia…


Category : Textile Dyeing, Food Preservation, Pharmaceutical materials, Beverages…

Product code:

citric acid/c6h8o7
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Usage & Application in Textile Industry

Citric Acid Monohydrate (C₆H₈O₇ · H₂O) is a natural, biodegradable organic acid widely used as a pH adjuster, chelating agent, descaler, and neutralizer across multiple industries. In textiles, it plays an important role in dyeing, finishing, and wastewater treatment.


1. Applications in Textile Industry

✔ 1. pH Neutralization After Dyeing

Citric acid is commonly used to neutralize excess alkali after:

Cotton reactive dyeing

Vat dyeing

Sulphur dyeing

Scouring/bleaching processes

Benefits:

Stabilizes fabric pH

Prevents yellowing or shade changes

Enhances color fastness


✔ 2. Chelating Agent / Water Softener

Effectively binds metal ions such as:

Calcium

Magnesium

Iron

Functions:

Prevents metal contamination in dye baths

Ensures uniform dyeing

Improves shade accuracy


✔ 3. Scale & Rust Removal

Used to remove:

Limescale buildup in machines

Iron stains on fabrics

Mineral deposits in pipelines and boilers


✔ 4. Anti-Yellowing Agent

After bleaching, citric acid is used to prevent:

Alkaline-induced yellowing

Oxidation yellowing during drying


✔ 5. Finishing Agent (pH Buffer)

Used in finishing baths to:

Maintain stable pH

Improve softness and handle

Protect sensitive fibers


✔ 6. Wastewater Treatment

Citric acid is used for:

pH adjustment

Chelation of heavy metals

Improving coagulation efficiency


2. Dosage Guidelines (Industry Range)

Dosage depends on process type and water hardness.

Neutralization after dyeing: 0.5–2 g/L

Chelation/water softening: 0.1–1 g/L

Descaling/cleaning: 1–5% solution

Wastewater treatment: 10–200 mg/L depending on pH correction needs


3. Advantages

Biodegradable and eco-friendly

Safe alternative to strong mineral acids

Excellent chelating power

Multi-functional across dyeing and finishing

Improves process stability and fabric quality


4. Applications in Other Industries

✔ Food & Beverage Industry

Acidity regulator

Flavor enhancer

Preservative

Fruit drinks, soft drinks, candies, jams

✔ Detergent & Cleaning Products

Chelating agent to improve cleaning efficiency

Scale removal in household cleaners

Dishwasher tablets, laundry detergents

✔ Cosmetics & Personal Care

pH adjuster in creams, lotions, shampoos

Antioxidant stabilizer

Used in bath bombs and skincare formulas

✔ Pharmaceuticals

Buffering agent in syrups and solutions

Effervescent tablets (combined with sodium bicarbonate)

Stabilizer in vitamin C products

✔ Water Treatment

Neutralization

Metal removal

Boiler and cooling system descaling

✔ Agriculture

pH adjustment in nutrient solutions

Chelating agent in fertilizers

Soil conditioner for alkaline soils


5. Safety & Handling

Non-toxic and safe under normal handling

Avoid inhalation of dust

Store in cool, dry areas

Use gloves and eye protection during industrial use

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