AR 
EN 
BN 
UR 
TR 
ID 
RU Sodium Alginate
Digital Printing Paste & Thickener
Digital Printing Paste & Thickener for Reactive, Disperse and Pigment Textile Printing
FSX Chemical supports textile printing mills and chemical distributors with DP-R, DP-D and DP-P product routes, sample matching, technical documents and export supply support.
Product Definition
What is Sodium Alginate?
What is sodium alginate?
Sodium alginate is a seaweed-derived, water-soluble polysaccharide widely used as a textile printing thickener. In reactive dye printing, it helps build smooth paste body, stable viscosity, clean print outlines and reliable wash-off after steaming.
What does sodium alginate do in textile printing?
Sodium alginate is mainly used for reactive printing on cotton, viscose, silk and other cellulosic fabrics. It supports paste preparation, screen penetration, color yield, print definition and wash-off performance under proper process conditions.
How should sodium alginate grades be compared?
Sodium alginate grades should be compared by reference viscosity, test concentration, test temperature, hydration conditions, printing process and final paste performance. The same viscosity range may represent different use directions when the test concentration is different.
Sodium alginate should not be selected only by viscosity number. Start from fabric, reactive dye system, paste concentration, printing process and sample performance under actual production conditions.
Application Selector
Explore the reactive printing routes connected to this sodium alginate family
Product pages explain what FSX Chemical supplies. Application pages explain how sodium alginate is evaluated within reactive printing processes, fabric routes and paste performance requirements.
Sodium Alginate for Reactive Cotton Printing
Used for reactive dye printing on cotton where smooth paste body, color yield, print definition and clean wash-off are important.
Sodium Alginate for Viscose and Cellulosic Fabrics
Evaluated for viscose, silk and cellulosic blends where stable viscosity and practical wash-off performance are required.
Sodium Alginate for High-Body Paste
HV route may be evaluated when lower dosage, higher paste body and stable viscosity are required under proper process conditions.
Sodium Alginate for High-Speed Rotary Printing
LV route may be evaluated for high-speed rotary systems where flow behavior, screen passage and process stability are key concerns.
Grade Comparison
Compare sodium alginate grades by viscosity method and application route
Use this table as a starting point for sodium alginate grade comparison. The same reference viscosity range may use different test concentrations, so viscosity should only be compared under the same test method.
Fushixin Print HV data is based on the current HV TDS. Fushixin Print MV and LV data is based on the 2026 product catalogue until grade-specific TDS files are added. Final selection should be confirmed by laboratory or production-side testing.
| Grade | Viscosity / Method | Key Parameter | pH / Moisture | Application | Recommended Process | Action |
|---|---|---|---|---|---|---|
| Fushixin Print HVHigh Viscosity Sodium Alginate | 20,000–30,000 mPa·s3% · 20°C | D.S. N/A | 7.0–8.0 / Max. 12.0% | High-body paste and lower-dosage reactive printing | High-viscosity sodium alginate route for reactive printing, high-body paste and lower-dosage applications. Recommended for buyers requiring smooth paste body, stable viscosity, clean print definition and good wash-off performance. | Request TDS |
| Fushixin Print MVMedium Viscosity Sodium Alginate | 20,000–30,000 mPa·s5% · 20°C | D.S. N/A | 7–8 / Confirm by selected TDS / batch COA | General-purpose reactive printing | General-purpose sodium alginate route for reactive textile printing. Recommended for buyers evaluating balanced paste body, stable viscosity, print definition and practical reactive printing performance. | Request TDS |
| Fushixin Print LVLow Viscosity Sodium Alginate | 20,000–30,000 mPa·s8% · 20°C | D.S. N/A | 7–8 / Confirm by selected TDS / batch COA | High-speed rotary reactive printing | Low-viscosity sodium alginate route for high-speed rotary printing and systems requiring lower paste body under proper process conditions. Recommended for buyers comparing flow behavior and screen passage. | Request TDS |
High-viscosity sodium alginate route for reactive printing, high-body paste and lower-dosage applications. Recommended for buyers requiring smooth paste body, stable viscosity, clean print definition and good wash-off performance.
General-purpose sodium alginate route for reactive textile printing. Recommended for buyers evaluating balanced paste body, stable viscosity, print definition and practical reactive printing performance.
Low-viscosity sodium alginate route for high-speed rotary printing and systems requiring lower paste body under proper process conditions. Recommended for buyers comparing flow behavior and screen passage.
Not sure which sodium alginate grade matches your process?
Send your current TDS, COA, viscosity method, fabric type, reactive dye system or sample requirement. FSX Chemical can compare sodium alginate grade direction before recommending a validation route.
Grade Selection Method
How to choose the right sodium alginate grade
Select sodium alginate by fabric, reactive dye process, paste concentration, viscosity method and sample performance under actual production conditions.
Step 1: Confirm fabric and dye process
Start from reactive printing on cotton, viscose, silk or other cellulosic fabrics. Different printing processes may require different paste body and screen behavior.
Step 2: Compare concentration and viscosity method
HV, MV and LV may share a similar reference viscosity range but use different test concentrations. Compare concentration, temperature, hydration and testing method before selection.
Step 3: Test before bulk order
Run laboratory or production-side testing to confirm paste body, color yield, print definition, screen penetration and wash-off before commercial use.
Sample Matching & Documents
Match your current sodium alginate before bulk purchasing
Send your current sample, TDS or COA so our technical team can compare sodium alginate grade direction and document support before order confirmation.
Matching Workflow
Send your current TDS, COA, viscosity method or physical sample
We compare your current specification with FSX Chemical product data and recommend a matched sodium alginate route for validation.
Send TDS, COA or a current sodium alginate sample for comparison.
Confirm concentration, temperature, hydration time, instrument and test method before judging viscosity equivalence.
Compare whether the product is used for high-body paste, general reactive printing or high-speed rotary printing.
Run internal or production-side testing before commercial use.
Factory / Lab / QC Proof
Factory, lab and QC proof
Use real production, testing and packing images to verify supply capability before sample evaluation.
Use real workshop, product sample, viscosity testing or export packing image here only after you insert the image.
Review formal manufacturing and production support for sodium alginate orders.
Use viscosity testing, sample comparison and method-review images.
Batch documents and COA support for confirmed orders.
Standard 25 kg bags, customized labels and export document support for international shipment.
Product FAQ
Resolve sodium alginate grade risk before sample testing
Use real laboratory, product sample or engineer communication image.
Product FAQ
Questions buyers ask before selecting a sodium alginate grade
These answers help buyers compare viscosity method, grade direction, samples and documents before sending an inquiry.
01What is sodium alginate used for in textile printing?
Sodium alginate is widely used as a reactive textile printing thickener for cotton, viscose, silk and other cellulosic fabrics. It helps build smooth paste body, stable viscosity, clean print definition, color yield and easy wash-off after steaming.
02How do I choose between HV, MV and LV?
Start from the printing process and paste requirement. HV is positioned for high-body paste and lower dosage, MV for general-purpose reactive printing, and LV for high-speed rotary printing. Final selection should be confirmed by sample testing.
03Why do HV, MV and LV show the same viscosity range?
The reference viscosity range may look similar, but the test concentration is different: HV is tested at 3%, MV at 5%, and LV at 8%. The concentration difference reflects different paste body and application directions.
04Can sodium alginate be replaced by CMC or CMS?
CMC or CMS may be evaluated in selected systems for cost or formulation adjustment, but they are not universal one-to-one replacements for sodium alginate. Suitability depends on dye system, fabric, paste recipe, color yield, wash-off and final print performance.
05What documents can FSX Chemical provide before order confirmation?
TDS and SDS can be provided for the selected sodium alginate product route. A batch-specific COA is normally prepared according to confirmed production batch and order requirements.
06How should sodium alginate be stored?
Store sodium alginate sealed in a cool, dry and ventilated place. Avoid moisture exposure after opening. Standard packing is normally 25 kg bag, with customized labels available upon request.
