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Send EmailGel Starch, Coal Binder Starch, Modified Corn Starch, Pregelatinized Starch, Waste Pressing Starch, Gomagel, 9005-25-8
GOMAJEL – PREGELATINIZED STARCH / MODIFIED CORNSTARCH
CAS Number: 9005-25-8
EC Number (EINECS): 232-679-6
Molecular Formula: (C₆H₁₀O₅)ₙ
Molecular Weight: Variable (polymer)
E Number: Not applicable (food grade available)
1. IDENTIFICATION INFORMATION
| Parameter | Information |
|---|---|
| Product Name | Gomajel / Pregelatinized Starch / Modified Cornstarch |
| Other Names (English) | Pregelatinized Starch, Modified Cornstarch, Coal Binder Starch, Dextrin Adhesive, Waste Pressing Starch, Instant Starch, Cold Water Soluble Starch |
| Other Names (Turkish) | Jel Nişasta, Kömür Bağlayıcı Nişasta, Prejelatinize Nişasta, Atık Presleme Nişastası, Dekstrin Tutkalı, Gomajel |
| Chemical Class | Modified carbohydrate polymer (starch derivative) |
| CAS Number | 9005-25-8 |
| EC Number (EINECS) | 232-679-6 |
| Appearance | White to off-white, fine powder |
| Odor | Odorless |
| Physical State (20°C) | Solid (fine powder) |
| Raw Material Source | Corn (maize), wheat, potato, or tapioca starch |
2. PHYSICAL PROPERTIES
| Property | Value |
|---|---|
| Physical State (20°C) | Solid (fine powder) |
| Appearance | White to off-white, fine powder |
| Odor | Odorless |
| Moisture Content | ≤ 10-12% |
| Solubility in Cold Water | Soluble / Dispersible (cold water soluble) |
| Solubility in Hot Water | Soluble |
| pH (1:10 dispersion) | 6.5 – 8.5 (neutral to slightly alkaline) |
| Gelatinization Temperature | Cold water swelling (pre-gelatinized) |
| Bulk Density | ~0.6 – 0.8 g/cm³ |
| Particle Size | 100-200 mesh (variable) |
| Color (Gardner) | ≤ 2.0 |
3. CHEMICAL PROPERTIES
| Property | Information |
|---|---|
| Chemical Class | Modified carbohydrate polymer |
| Chemical Structure | Amylose and amylopectin (gelatinized) |
| Functional Groups | Hydroxyl (-OH), glycosidic bonds |
| Protein Content | ≤ 0.5% |
| Ash Content | ≤ 0.5% |
| Amylose Content | ~25-30% (corn based) |
| Amylopectin Content | ~70-75% (corn based) |
| Stability | Stable under normal conditions; resistant to heat and mild acids |
| Hygroscopicity | Medium (absorbs moisture) |
| Incompatible Materials | Strong oxidizing agents, strong acids, strong bases |
Chemical Structure (Schematic):
Pregelatinized Starch: (C₆H₁₀O₅)ₙ
- Amylose: Linear α-1,4 linked glucose polymer (~25%)
- Amylopectin: Branched α-1,4 and α-1,6 linked glucose polymer (~75%)
4. PRODUCTION PROCESS
4.1. Pregelatinization Process
| Stage | Process | Description |
|---|---|---|
| 1 | Starch Slurry Preparation | Native starch mixed with water (~30-40% solids) |
| 2 | Gelatinization | Heating to 70-90°C with or without pressure; starch granules swell and rupture |
| 3 | Drum Drying / Spray Drying | Gelatinized starch dried on drum dryer or spray dryer |
| 4 | Milling | Dried product milled to desired particle size (100-200 mesh) |
| 5 | Sieving and Packaging | Sieved to remove oversize particles; packed in moisture-proof bags |
4.2. Key Modifications (Optional)
| Modification | Effect |
|---|---|
| Acid Modification | Reduced viscosity; improved solubility |
| Oxidation | Increased whiteness; reduced viscosity |
| Cross-linking | Increased stability; resistance to shear and heat |
| Hydroxypropylation | Improved cold water solubility; freeze-thaw stability |
5. FUNCTIONAL PROPERTIES
5.1. Binding and Adhesive Properties
| Parameter | Description |
|---|---|
| Primary Function | High adhesion and binding capacity |
| Mechanism | Swelling and gel formation in water; forms hydrogen bonds with substrate particles |
| Cold Water Solubility | Dissolves or disperses in cold water without heating (no cooking required) |
| Setting Time | Rapid setting upon drying |
| Application | Coal briquetting, pellet binding, waste pressing |
5.2. Thickening Properties
| Parameter | Description |
|---|---|
| Primary Function | General purpose thickener for no-cook applications |
| Viscosity Range | Medium to high viscosity |
| Temperature Tolerance | Heat stable |
| pH Tolerance | Stable at pH 4.0-9.0 |
5.3. Film-Forming Properties
| Parameter | Description |
|---|---|
| Film Formation | Forms clear, flexible films upon drying |
| Adhesion | Good adhesion to paper, textiles, coal, and mineral surfaces |
| Brittleness | Low (flexible films) |
6. INDUSTRIAL APPLICATIONS AND DOSAGE
6.1. Coal Industry
| Application | Function | Recommended Dosage | Suitability |
|---|---|---|---|
| Coal Briquetting | Natural coal binder; improves strength | 3-8% of coal mixture | Very High |
| Hookah / Charcoal Briquettes | Binder; provides hardness and long burning | 3-8% of mixture | Very High |
| Briquette Coal Production | Binder; improves mechanical durability | 3-8% of mixture | Very High |
| Pressed Coal | Binder; enhances shaping and stability | 3-8% of mixture | Very High |
Advantages in Coal Applications:
-
Energy Saving: Reduces electricity consumption by 10-15%
-
Extended Machine Life: Reduces wear on pressing equipment
-
Fast Drying: Rapid drying time in briquette production
-
Hardness: Provides hardness and long burning time
-
Odorless: No odor emissions during processing
6.2. Animal Feed Industry
| Application | Function | Recommended Dosage | Suitability |
|---|---|---|---|
| Pellet Binding | Binder in animal feed pellets | 1-3% of feed formula | High |
| Fish Feed | Binding agent for aquatic feed pellets | 2-4% of feed formula | High |
6.3. Paper and Textile Industry
| Application | Function | Recommended Dosage | Suitability |
|---|---|---|---|
| Waste Paper Pressing | Binder for paper dust waste | 2-5% of waste | Medium |
| Textile Dust Pressing | Binder for textile waste | 2-5% of waste | Medium |
| Paper Coating | Binder in paper coating formulations | 1-3% of coating | Medium |
6.4. Chemical and Construction Industry
| Application | Function | Recommended Dosage | Suitability |
|---|---|---|---|
| Foundry Sand Binder | Binder in casting mold sand | 1-3% of sand mixture | Medium |
| Drilling Fluids | Viscosity modifier and fluid loss control | 1-3% of fluid | Medium |
| Ceramics | Binder in ceramic pressing | 1-3% of ceramic mix | Medium |
| Water Leak Prevention | Sealant and water-stop agent | 2-5% of mixture | Medium |
| Fire Extinguishers | Fire extinguishing agent | As formulated | Medium |
7. KEY ADVANTAGES
| Advantage | Description |
|---|---|
| Natural and Eco-Friendly | 100% natural, biodegradable product; non-toxic; no harmful chemicals |
| Cold Water Soluble | No cooking required; dissolves or disperses in cold water |
| Versatile Applications | Multiple industrial uses (coal, feed, paper, textile, ceramics, drilling) |
| High Binding Capacity | Excellent adhesion and binding properties |
| Odorless | Odorless; no unpleasant smell during processing |
| Non-Toxic | Safe for food and feed applications |
| Fast Drying | Rapid setting and drying time |
| Improved Durability | Provides hardness, mechanical strength, and durability |
| Energy Efficient | Reduces electricity consumption by 10-15% |
| Extended Equipment Life | Reduces wear on machinery and equipment |
| Long Burning Time | Provides extended burning time in coal applications |
| Heat and Acid Resistant | Stable under heat and mild acid conditions |
| Cost-Effective | Economical solution with high efficiency |
8. QUALITY SPECIFICATIONS (INDUSTRIAL GRADE)
| Parameter | Specification |
|---|---|
| Appearance | White to off-white, fine powder |
| Odor | Odorless |
| Moisture Content | ≤ 10-12% |
| pH (1:10 dispersion) | 6.5 – 8.5 |
| Solubility (Cold Water) | ≥ 95% |
| Protein Content | ≤ 0.5% |
| Ash Content | ≤ 0.5% |
| Particle Size (100 mesh) | ≥ 95% passing |
| Viscosity (6%, 25°C) | Variable (depends on modification) |
| Gelatinization Temperature | Cold water swelling (pre-gelatinized) |
| Heavy Metals (as Pb) | ≤ 10 ppm |
| Arsenic (As) | ≤ 1 ppm |
| Sulfur Dioxide (SO₂) | ≤ 30 ppm |
9. MICROBIOLOGICAL SPECIFICATIONS (FOOD GRADE)
| Parameter | Specification |
|---|---|
| Total Aerobic Mesophilic Bacteria | ≤ 1,000 CFU/g |
| Yeast and Mold | ≤ 100 CFU/g |
| Salmonella spp. | Negative in 25g |
| Escherichia coli | Negative in 10g |
10. STORAGE AND SHELF LIFE
| Parameter | Information |
|---|---|
| Storage Conditions | Cool (15-25°C), dry, well-ventilated area |
| Container Requirements | Tightly closed, original packaging (hygroscopic) |
| Protect From | Moisture (causes caking), direct sunlight, strong oxidizing agents |
| Shelf Life | 24-36 months (unopened original packaging, recommended conditions) |
| Stability Note | Hygroscopic; store in airtight containers after opening |
11. PACKAGING OPTIONS
| Packaging Type | Quantity | Material |
|---|---|---|
| Multi-wall paper bag with PE inner liner | 25 kg | Kraft paper + PE |
| Plastic bag | 25-50 kg | HDPE / LDPE |
| Big-Bag (bulk bag) | 500-1,000 kg | Polypropylene |
| Bulk | 20-25 tons | Pneumatic tanker / Bulk trailer |
12. SAFETY AND HEALTH INFORMATION
GHS Classification (Bulk Powder)
| Hazard Class | Category |
|---|---|
| Not classified as hazardous | (Non-hazardous substance) |
Hazard Statements
| Code | Statement |
|---|---|
| None | Not classified as hazardous |
Precautionary Statements
| Code | Statement |
|---|---|
| P261 | Avoid breathing dust |
| P280 | Wear protective gloves/eye protection |
| P305+P351+P338 | IF IN EYES: Rinse cautiously with water for several minutes |
Adverse Effects (Industrial Exposure)
| Type | Effects |
|---|---|
| Inhalation | Dust may cause mild respiratory irritation |
| Skin Contact | Generally non-irritating |
| Eye Contact | Mechanical irritation from dust |
| Ingestion | Low toxicity; food grade available |
First Aid Measures
| Exposure Route | Action |
|---|---|
| Inhalation | Move to fresh air. If respiratory irritation persists, seek medical attention. |
| Skin Contact | Wash with plenty of soap and water. |
| Eye Contact | Rinse immediately with plenty of water for at least 15 minutes. Seek medical attention. |
| Ingestion | Rinse mouth. Drink plenty of water. |
13. OTHER NAMES AND SYNONYMS
| Type | Name |
|---|---|
| Turkish Names | Jel Nişasta, Kömür Bağlayıcı Nişasta, Prejelatinize Nişasta, Atık Presleme Nişastası, Dekstrin Tutkalı, Gomajel |
| English Names | Pregelatinized Starch, Modified Cornstarch, Coal Binder Starch, Dextrin Adhesive, Waste Pressing Starch, Instant Starch, Cold Water Soluble Starch |
| CAS Number | 9005-25-8 |
| EC Number | 232-679-6 |
Trade Names (Partial List):
-
Gomajel®
-
Coal Binder Starch
-
Pregelatinized Cornstarch
-
Various generic suppliers
14. COMPARISON: GOMAJE (PREGELATINIZED STARCH) VS NATIVE STARCH
| Property | Gomajel (Pregelatinized) | Native Starch |
|---|---|---|
| Cold Water Solubility | Yes (soluble/dispersible) | No |
| Gelatinization | Requires no heating | Requires heating (70-90°C) |
| Binding Strength | Higher (immediate) | Lower (requires cooking) |
| Drying Time | Fast | Slow |
| Application | No-cook, instant applications | Requires cooking process |
| Viscosity Control | Immediate | Requires heating |
| Storage Stability | Stable | Stable (hygroscopic) |
15. SUMMARY AND CRITICAL WARNINGS
Product Summary
| Parameter | Value |
|---|---|
| Product | Gomajel / Pregelatinized Starch / Modified Cornstarch |
| CAS | 9005-25-8 |
| Appearance | White to off-white, fine powder |
| Moisture Content | ≤ 10-12% |
| pH | 6.5 – 8.5 |
| Primary Sector | Coal, animal feed, paper, textile, chemical, construction |
Key Properties
| Property | Description |
|---|---|
| Chemical Class | Modified carbohydrate polymer |
| Primary Function | Cold water soluble binder, thickener |
| Secondary Function | Adhesive, film-former, coal binder |
| Key Advantage | Natural, eco-friendly, non-toxic |
Critical Warnings
| No | Warning |
|---|---|
| 1 | Gomajel is cold water soluble; dissolves or disperses in cold water without heating. No cooking required. |
| 2 | Coal Binder Application: For coal briquetting, recommended dosage is 3-8% of coal mixture. Provides hardness, long burning time, and reduces electricity consumption by 10-15%. |
| 3 | Hygroscopic: Absorbs moisture from air; may cake if exposed to humidity. Store in airtight containers. |
| 4 | Animal Feed: Suitable as a binder in animal feed pellets; dosage 1-3% of feed formula. |
| 5 | Non-Toxic: Food grade available; safe for feed and food applications. |
| 6 | Dust Precautions: Avoid breathing dust; may cause mild respiratory irritation. Use N95 mask during handling. |
| 7 | Heat and Acid Resistance: Resistant to heat and mild acids; suitable for multiple industrial applications. |
| 8 | Customizable: Various modifications available (acid-thinned, oxidized, cross-linked, hydroxypropylated) for specific application requirements. |
| 9 | Storage: Store in cool, dry place; shelf life 24-36 months. |
IMPORTANT DECLARATION: This Technical Data Sheet (TDS) is for informational purposes only and has been prepared based on available technical data. The user is responsible for determining the product's suitability for their specific application and for complying with all local, national, and international regulations. For complete safety, storage, use, transport, waste, and regulatory compliance information, refer to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier. The user is responsible for testing the product in their own processes and applications.
