{"id":10533,"date":"2026-03-04T12:03:32","date_gmt":"2026-03-04T12:03:32","guid":{"rendered":"https:\/\/longchangextracts.com\/ammonium-alginate-cas-9005-34-9-a-comprehensive-guide-to-this-versatile-food-additive\/"},"modified":"2026-08-04T10:45:56","modified_gmt":"2026-08-04T10:45:56","slug":"ammonium-alginate-cas-9005-34-9-a-comprehensive-guide-to-this-versatile-food-additive","status":"publish","type":"post","link":"https:\/\/longchangextracts.com\/es\/ammonium-alginate-cas-9005-34-9-a-comprehensive-guide-to-this-versatile-food-additive\/","title":{"rendered":"What Is Ammonium Alginate (E403)? Uses, Specifications and Cost Factors"},"content":{"rendered":"
\n

What Is Ammonium Alginate (E403)? Uses, Specifications and Cost Factors<\/h1>\n

Ammonium alginate is the ammonium salt of alginic acid, a polymer obtained from alginate raw material.<\/strong> FAO\/JECFA identifies it as CAS 9005-34-9, INS 403 and uses the repeat expression (C6<\/sub>H11<\/sub>NO6<\/sub>)n<\/sub>. In EU food-additive nomenclature it is E403. Because it is a variable-chain polymer, procurement should define the required viscosity method, identity tests, purity criteria, intended market and application rather than relying on one small-molecule \u201cmolecular weight\u201d or the E number alone.<\/p>\n

Ammonium alginate identity at a glance<\/h2>\n
\n\n\n\n\n\n\n\n\n\n
Controlled name<\/th>\nAmmonium alginate; ammonium salt of alginic acid<\/td>\n<\/tr>\n
CAS Registry Number<\/th>\n9005-34-9<\/td>\n<\/tr>\n
JECFA \/ Codex identifier<\/th>\nINS 403<\/td>\n<\/tr>\n
EU identifier<\/th>\nE403<\/td>\n<\/tr>\n
Polymer repeat expression<\/th>\n(C6<\/sub>H11<\/sub>NO6<\/sub>)n<\/sub><\/td>\n<\/tr>\n
Molecular-weight context<\/th>\nJECFA reports a typical macromolecular range of 10,000\u2013600,000; it is not one fixed small-molecule value<\/td>\n<\/tr>\n
Official functional-use terms<\/th>\nStabilizer, thickener, gelling agent and emulsifier in the JECFA monograph<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

Sources: the FAO\/JECFA Ammonium Alginate monograph<\/a> y FAO Combined Compendium record<\/a>. These establish public identity and specification context; they do not prove the current composition, grade, viscosity, conformity, stock or suitability of a Longchang lot.<\/p>\n

Why ammonium alginate does not have one fixed molecular weight<\/h2>\n

Alginates are polysaccharide polymers containing mannuronate and guluronate residues in sequences that vary with raw material and processing. The subscript n<\/em> in the repeat expression indicates a chain of variable length. For that reason, a buyer normally controls functional behavior through a defined viscosity method, concentration, temperature, spindle or shear condition, plus identity and purity tests\u2014not by treating 193.16, 217 or another unit value as the molecular weight of every commercial polymer chain.<\/p>\n

The older Longchang article displayed C6<\/sub>H7<\/sub>NO6<\/sub> and 193.14 g\/mol as if they were a complete commercial identity. The older product page displayed C13<\/sub>H16<\/sub>N3<\/sub>NaO4<\/sub>S and 333.33861, which describe neither the JECFA nor EU ammonium-alginate identity. Those fields are not carried forward.<\/p>\n

What does E403 or INS 403 mean?<\/h2>\n

E403 and INS 403 identify ammonium alginate in food-additive systems. They do not, by themselves, show that a supplier lot complies with a destination market, that a requested food category permits the use, or that the material meets the applicable purity, microbiological and documentation requirements.<\/p>\n

\n\n\n\n\n\n\n\n\n
Source<\/th>\nWhat it establishes<\/th>\nWhat a buyer must still verify<\/th>\n<\/tr>\n<\/thead>\n
21 CFR 184.1133<\/a><\/td>\nU.S. identity plus named food categories, maximum levels and functional uses<\/td>\nCurrent text, exact product category, as-served calculation, formulation and all other applicable requirements<\/td>\n<\/tr>\n
EU Regulation 231\/2012<\/a><\/td>\nE403 identity and purity criteria<\/td>\nCurrent consolidated text, applicable analytical methods and lot conformity<\/td>\n<\/tr>\n
EU Regulation 1333\/2008<\/a><\/td>\nFood-additive authorization framework and Union-list context<\/td>\nExact food category, conditions of use, labelling and destination requirements<\/td>\n<\/tr>\n
FAO\/JECFA monograph<\/td>\nINS 403 identity, functional uses and specification tests<\/td>\nWhether the current supplier specification and lot COA use the same methods and bases<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

What is ammonium alginate used for?<\/h2>\n

JECFA lists stabilizer, thickener, gelling-agent and emulsifier functions. The current U.S. eCFR lists specific food categories and maximum use levels, including confections and frostings, fats and oils, gelatins and puddings, gravies and sauces, jams and jellies, sweet sauces, and a separate condition for other categories. That is a defined U.S. regulatory context, not evidence that every proposed formulation or jurisdiction permits the same use.<\/p>\n

Performance also depends on polymer distribution, viscosity grade, concentration, hydration, pH, ions, temperature, shear, other hydrocolloids and the food matrix. Generic claims such as \u201cworks across pH 4\u201310,\u201d \u201cprevents ice crystals,\u201d \u201cimproves yield\u201d or \u201cforms a firm gel\u201d cannot replace formulation trials and an agreed test method.<\/p>\n

What should be compared in an ammonium alginate specification?<\/h2>\n
\n\n\n\n\n\n\n\n\n\n
Qualification area<\/th>\nQuestions for the specification or RFQ<\/th>\nWhy it matters<\/th>\n<\/tr>\n<\/thead>\n
Identidad<\/td>\nCAS, polymer repeat expression, ammonium and alginate identity tests<\/td>\nSeparates ammonium alginate from sodium, potassium, calcium or propylene-glycol alginate<\/td>\n<\/tr>\n
Viscosidad<\/td>\nTarget range, solution concentration, water, temperature, instrument, spindle, speed, hydration time and reporting units<\/td>\nA number without a method is not comparable across suppliers<\/td>\n<\/tr>\n
Composition and purity<\/td>\nAssay basis, loss on drying, ash, water-insoluble matter, formaldehyde and element limits<\/td>\nPublic monographs use defined bases and tests<\/td>\n<\/tr>\n
Microbiolog\u00eda<\/td>\nOrganisms, count limits, sample size and methods required for the destination\/application<\/td>\nNeeds market- and use-specific acceptance criteria<\/td>\n<\/tr>\n
Commercial<\/td>\nQuantity, packaging, sample, MOQ, availability, quotation validity and confirmed lead time<\/td>\nPrevents historical webpage fields from becoming supply commitments<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

What affects ammonium alginate manufacturing plant or production cost?<\/h2>\n

\u201cManufacturing plant cost\u201d and \u201cproduct purchase price\u201d are different questions. A plant study needs defined capacity, alginic-acid feedstock and yield, neutralization and pH control, washing or purification steps, drying, milling, viscosity grading, quality-control methods, utilities, labour, wastewater handling, packaging and the destination’s regulatory system. A product quotation instead depends on the required specification, viscosity method, batch size, documents, packaging, delivery destination and current availability.<\/p>\n

Longchang does not publish a universal plant-capital or production-cost number on this page. A defensible estimate requires an engineering scope and dated regional inputs. A product RFQ should not be presented as a plant project report.<\/p>\n

Safety and regulatory interpretation<\/h2>\n

JECFA recorded a group ADI \u201cnot specified\u201d for alginic acid and its salts. EFSA’s 2017 re-evaluation concluded that a numerical ADI was not needed and found no safety concern at the refined exposure assessment for reported food-additive uses, while also recording limitations and special considerations for infant and young-child medical\/special-formula categories. See the EFSA E400\u2013E404 opinion<\/a>.<\/p>\n

Those conclusions have a defined assessment scope. They are not a blanket instruction that any product, level, formulation, consumer group or market is \u201csafe to consume.\u201d This page is not a product specification, food-safety plan, legal determination or medical guide. Review the current applicable rules and supplier documents for the exact lot, use and destination.<\/p>\n

Ammonium alginate versus sodium alginate<\/h2>\n

Both are salts of alginic acid, but the counterion and controlled identity differ. Ammonium alginate is CAS 9005-34-9 \/ INS 403; sodium alginate has its own identity and INS number. Do not infer equivalent viscosity, gel behavior, sodium-reduction suitability, regulatory conditions or substitution ratio from the shared word \u201calginate.\u201d Compare controlled specifications and run application trials.<\/p>\n

Request current supplier documents<\/h2>\n

Open the Ammonium Alginate CAS 9005-34-9 product page<\/a> to request the current supplier specification, complete viscosity method, applicable lot COA, SDS status, food-use or regulatory documents, sample, packaging, MOQ, availability, quotation and confirmed lead time.<\/p>\n

Correo electr\u00f3nico info@longchangchemical.com<\/a> with the destination market, intended function\/category, target viscosity and method, quantity, packaging and required documents.<\/p>\n

Frequently asked questions<\/h2>\n

Is E403 proof of food grade?<\/h3>\n

No. E403 is an identity in EU food-additive nomenclature. Lot conformity and legal use still depend on the current specification, analytical results, applicable category and conditions, documentation, labelling and destination rules.<\/p>\n

Why is viscosity method detail essential?<\/h3>\n

Viscosity changes with concentration, temperature, instrument settings, hydration and sample preparation. Two suppliers’ numbers cannot be compared unless their method and basis match.<\/p>\n

Does ammonium alginate have a fixed formula and molecular weight?<\/h3>\n

The official repeat expression is (C6<\/sub>H11<\/sub>NO6<\/sub>)n<\/sub>. The variable chain length means there is no single small-molecule molecular weight for every material.<\/p>\n<\/article>","protected":false},"excerpt":{"rendered":"

What Is Ammonium Alginate (E403)? Uses, Specifications and Cost Factors Ammonium alginate is the ammonium salt of alginic acid, a polymer obtained from alginate raw material. FAO\/JECFA identifies it as CAS 9005-34-9, INS 403 and uses the repeat expression (C6H11NO6)n. In EU food-additive nomenclature it is E403. Because it is a variable-chain polymer, procurement should […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[46],"tags":[],"yoast_head":"\nAmmonium Alginate E403: Uses, Specs & Cost Factors<\/title>\n<meta name=\"description\" content=\"Learn what ammonium alginate CAS 9005-34-9 is, how E403 rules and specifications differ by market, and what affects application and production cost.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/longchangextracts.com\/es\/ammonium-alginate-cas-9005-34-9-a-comprehensive-guide-to-this-versatile-food-additive\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ammonium Alginate E403: Uses, Specs & Cost Factors\" \/>\n<meta property=\"og:description\" content=\"Learn what ammonium alginate CAS 9005-34-9 is, how E403 rules and specifications differ by market, and what affects application and production cost.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/longchangextracts.com\/es\/ammonium-alginate-cas-9005-34-9-a-comprehensive-guide-to-this-versatile-food-additive\/\" \/>\n<meta property=\"og:site_name\" content=\"China Chemical Manufacturer\" \/>\n<meta property=\"article:published_time\" content=\"2026-03-04T12:03:32+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-04T10:45:56+00:00\" \/>\n<meta name=\"author\" content=\"longcha9\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"longcha9\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tiempo de lectura\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/longchangextracts.com\/ammonium-alginate-cas-9005-34-9-a-comprehensive-guide-to-this-versatile-food-additive\/\",\"url\":\"https:\/\/longchangextracts.com\/ammonium-alginate-cas-9005-34-9-a-comprehensive-guide-to-this-versatile-food-additive\/\",\"name\":\"Ammonium Alginate E403: Uses, Specs & Cost Factors\",\"isPartOf\":{\"@id\":\"https:\/\/longchangextracts.com\/#website\"},\"datePublished\":\"2026-03-04T12:03:32+00:00\",\"dateModified\":\"2026-08-04T10:45:56+00:00\",\"author\":{\"@id\":\"https:\/\/longchangextracts.com\/#\/schema\/person\/80933ac6926ad63fea74ec33f8d04869\"},\"description\":\"Learn what ammonium alginate CAS 9005-34-9 is, how E403 rules and specifications differ by market, and what affects application and production cost.\",\"breadcrumb\":{\"@id\":\"https:\/\/longchangextracts.com\/ammonium-alginate-cas-9005-34-9-a-comprehensive-guide-to-this-versatile-food-additive\/#breadcrumb\"},\"inLanguage\":\"es\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/longchangextracts.com\/ammonium-alginate-cas-9005-34-9-a-comprehensive-guide-to-this-versatile-food-additive\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/longchangextracts.com\/ammonium-alginate-cas-9005-34-9-a-comprehensive-guide-to-this-versatile-food-additive\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/longchangextracts.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"What Is Ammonium Alginate (E403)? 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