Pharmaceutical Intermediates
Ammonium Alginate CAS 9005-34-9
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Buyer summary
Verified identity details
Identity fields are separated from historical commercial records. Confirm the current test method and acceptance criteria with the quotation.
- CAS number
- 9005-34-9
Technical information
Identity, specifications and application context
Legacy content may include historical source-record fields. Request the current specification, lot COA and SDS before making a purchasing decision.
Longchang sourcing page for Ammonium Alginate CAS 9005-34-9. Send the destination market, intended food category or industrial function, target viscosity and complete method, required purity/microbiological limits, quantity, packaging and documents to request a current supplier specification, applicable lot COA, SDS status, sample availability, MOQ, current availability, quotation validity and confirmed lead time. No historical webpage value is a current specification or supply commitment.
Public identity fields
| Product name | Ammonium Alginate; ammonium salt of alginic acid |
|---|---|
| CAS Registry Number | 9005-34-9 |
| JECFA / Codex identifier | INS 403 |
| EU identifier | E403 |
| Polymer repeat expression | (C6H11NO6)n |
| Molecular-weight context | Variable polymer; JECFA reports 10,000–600,000 as a typical macromolecular range |
| Public functional-use terms | Stabilizer, thickener, gelling agent and emulsifier in the JECFA monograph |
The FAO/JECFA monograph, FAO record and EU Regulation 231/2012 support these public fields. They do not establish the current Longchang specification, viscosity grade, lot result, food-grade status, certification, stock or application suitability.
Identity correction
The previous product page displayed C13H16N3NaO4S and molecular weight 333.33861. Those fields do not describe the official ammonium-alginate identity and are removed. Ammonium alginate is a variable-chain polymer, so qualification uses the repeat expression, identity tests, defined viscosity method and current controlled documents rather than a single small-molecule value.
Request a current specification, COA, SDS or sample
| RFQ field | Information to provide or request |
|---|---|
| Identity | CAS, ammonium/alginate tests, repeat expression and any required compendial or customer method |
| Viscosity | Target range, solution concentration, water, temperature, instrument, spindle, speed, hydration time and units |
| Purity | Assay basis, loss on drying, ash, water-insoluble matter, formaldehyde, elements and required methods |
| Microbiology | Organisms, limits, sample size, method and intended food/application category |
| Documents | Current supplier specification, applicable lot COA, SDS status, traceability and requested market/customer declarations |
| Commercial details | Quantity, sample, packaging, MOQ, current availability, destination, quotation validity and confirmed lead time |
Public food-additive references are not a lot specification
| Reference | Public context | Qualification boundary |
|---|---|---|
| 21 CFR 184.1133 | U.S. identity, food categories, maximum use levels and functions | Verify the current text, category, as-served calculation and complete formulation requirements |
| JECFA INS 403 monograph | Identity, functional uses and public specification tests | Confirm that the current supplier specification and lot COA use the required methods and bases |
| EU Regulation 231/2012 | E403 identity and purity criteria | Confirm current consolidated criteria, methods and lot results |
| EU Regulation 1333/2008 | EU authorization framework and Union-list context | Confirm exact food category, use conditions, labelling and destination requirements |
| EFSA E400–E404 opinion | Exposure assessment for reported food-additive uses and documented limitations | Not a blanket product, formulation, consumer-group or market approval |
Historical source fields requiring reconfirmation
The earlier product page displayed the following values without a visible controlled specification number, complete methods, lot, effective date or approval status. They are historical RFQ context only—not current specifications, lot results or supply commitments.
| Source field | Historical display | Issue | Current RFQ requirement |
|---|---|---|---|
| Appearance | Milk white to light yellow | No controlled wording, observation method or approval version | Current appearance criterion and method |
| Viscosity, 1% | 500–1000 mPa·s at 20°C | Instrument, spindle, speed, water, hydration and basis were not stated | Complete viscosity method and acceptance range |
| Moisture | ≤15.0% | Method and dry/anhydrous basis were not shown | Current limit, method and calculation basis |
| pH, 1% solution | 5.0–8.0 | Water, temperature, preparation and method were not shown | Current pH method and acceptance range |
| Particle size | 40–60 mesh | Sieve standard and distribution criterion were not shown | Current sieve method and required distribution |
| Lead / arsenic | Rows labelled mg/kg but values displayed as ≤5% and ≤3% | Units and percentages conflict and cannot be treated as limits | Correct analyte limits, units, methods and applicable lot results |
| Heavy metals | ≤20 mg/kg | No analyte definition or method | Element-specific limits, methods and reporting thresholds |
| Packaging | 25 kg/drum | No current packaging configuration or availability evidence | Current net weight, liner/container, pallet and destination options |
Application and safety boundary
JECFA functional-use terms and market regulations can guide qualification, but they do not prove performance in a buyer’s formulation. Viscosity and gel behavior depend on grade, concentration, hydration, pH, ions, temperature, shear and matrix. Food, pharmaceutical, nutraceutical, encapsulation, dental, industrial or other contexts require separate product, process, quality and regulatory evidence.
JECFA and EFSA assessment language has a defined scope and is not consumer advice. This webpage is not a food-safety plan, legal determination, SDS or handling guide. Use current supplier documents with the buyer’s intended use, formulation, destination rules, quality system and risk assessment.
Technical guide
Read What Is Ammonium Alginate (E403)? Uses, Specifications and Cost Factors for the polymer identity, E403/INS 403 distinction, regulatory-source boundaries and production-cost questions.
Send an RFQ
Email info@longchangchemical.com with the destination market, intended function/category, target viscosity and full method, required limits and documents, quantity, packaging and delivery destination. Longchang will confirm what can be supported in the current specification, applicable lot COA and dated quotation.
Procurement
Current documents, sample review and quotation
Current specification
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Storage and handling
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Documents
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Request documentation →Procurement FAQ
Information for your inquiry
What information should I include in a request for quotation?
Include the product or CAS number, required specification or grade, quantity, destination country and documentation requirements.
Can I request COA, SDS or TDS documentation?
Yes. Request the current document set with the inquiry. Availability and revision are confirmed for the quoted material.
Can I request a sample before placing a bulk order?
Submit the application and target quantity. Sample availability, size and delivery terms are confirmed after review.
Request for quotation
Tell us what you need
Include the target specification, quantity and destination so the team can prepare a useful response.
- Product: Ammonium Alginate
- CAS: 9005-34-9
- Email: info@longchangchemical.com
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