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| "Synonyms:(S)-2-Aminobutanedioic acid L-2-Aminobutanedioic acid (2S)-2-Aminobutanedioic acid L-Aminosuccinic acid L-Asparaginic acid Molecular Formula:C4H7NO4 Molecular Weight: 133.1 HS Code: 2922491990 Grade:Food Grade99.6% Hazard Class:General Cargo" | |||||||||
56-84-8
bosschemical
56-84-8
1. Product Overview
L-Aspartic acid ((2S)-2-aminobutanedioic acid; HOOC-CH(NH₂)-CH₂-COOH, CAS 56-84-8) is the naturally occurring L-enantiomer of the amino acid aspartic acid — one of the standard building blocks of proteins and a non-essential amino acid found in both plants and animals. Industrially it is best known as the key raw material for aspartame, the methyl ester of the L-aspartyl-L-phenylalanine dipeptide used worldwide as a low-calorie sweetener, and it is a recognized flavoring substance (FEMA 3656). The same product serves the nutrition industry (amino-acid supplements and mineral aspartates such as potassium and magnesium aspartate), peptide synthesis, fermentation culture media, and industrial applications including detergents, fungicides, germicides and metal complexation. Its D- and L-forms share identical physical constants — melting at ≈ 270 °C with decomposition, water solubility of ≈ 4.5 g/L at 25 °C, pKa 1.92 / 3.87 / 9.87 — differing only in optical rotation. Mild, stable and easy to handle, L-aspartic acid is one of the most widely manufactured amino acids in the world.
Core value propositions:
● Aspartame Raw Material (Core Application): the L-aspartic acid building block for the world's leading low-calorie sweetener;
● Natural Protein Amino Acid: the (2S) form used in proteins, food flavoring (FEMA 3656) and nutrition;
● Mineral Aspartate Chemistry: potassium, magnesium, calcium and sodium aspartate forms;
● Broad Industrial Portfolio: peptide synthesis, culture media, detergents, fungicides, germicides, metal complexation.
2. Product Information (Quick Facts)
Item | Specification |
Chemical Name | L-Aspartic acid ((2S)-2-aminobutanedioic acid) |
Synonyms | L-Asp; (S)-aspartic acid; L-aminosuccinic acid; aspartic acid; FEMA 3656 |
CAS No. | 56-84-8 (D-form: 1783-96-6; DL racemic mixture also available) |
EC No. (EINECS) | 200-291-6 |
Molecular Formula | C₄H₇NO₄ (HOOC-CH(NH₂)-CH₂-COOH) |
Molecular Weight | 133.10 g/mol |
Appearance | White crystalline powder |
Melting Point | ≈ 270 °C (270–271 °C, decomposes; identical for both enantiomers) |
Solubility | Sparingly soluble in water (≈ 4.5 g/L at 25 °C); soluble in dilute acids and alkalis |
Optical Activity | Optically active — dextrorotatory, mirror image (opposite rotation) of D-aspartic acid |
3. Chemistry & Structure
L-Aspartic acid, HOOC-CH(NH₂)-CH₂-COOH (MW 133.10), is the (2S) enantiomer of 2-aminobutanedioic acid — a chiral dicarboxylic amino acid whose α-carbon carries an amino group, two carboxyl groups and a hydrogen. It is the mirror image of D-aspartic acid (CAS 1783-96-6), and the two enantiomers share identical physical constants — melting at ≈ 270 °C with decomposition, water solubility of ≈ 4.5 g/L at 25 °C, dissociation constants pKₐ 1.92 (α-COOH), 3.87 (side-chain COOH) and 9.87 (ammonium) — while rotating plane-polarized light in opposite directions. As a zwitterionic amphoteric amino acid it buffers across a wide pH range, and its two carboxyl groups chelate metal ions to form the aspartate salts (potassium, magnesium, calcium, sodium aspartate) used in nutrition. It is produced industrially by fermentation or enzymatic conversion, and into the dipeptide sweetener aspartame (L-aspartyl-L-phenylalanine methyl ester).
4. Key Features & Benefits
● Aspartame feedstock: the essential L-aspartic acid raw material for low-calorie sweetener production.
● Natural protein amino acid: the (2S) form found in proteins and in plants and animals.
● Recognized flavoring substance: FEMA 3656 for food-flavor applications.
● Mineral aspartate portfolio: potassium, magnesium, calcium and sodium aspartate forms.
● Amphoteric & chelating: zwitterionic buffering and metal-complexation chemistry.
● Multi-industry: peptides, culture media, detergents, fungicides, germicides, metal complexation.
5. Main Applications
5.1 Sweetener Industry — Aspartame Raw Material (Core Application)
L-aspartic acid is the amino-acid building block of aspartame, the widely used low-calorie sweetener:
● Aspartame synthesis: coupled with L-phenylalanine methyl ester to form the dipeptide sweetener.
● Sweetener production for beverages, tabletop sweeteners, confectionery and food products.
● High-purity food-grade L-aspartic acid: consistent assay and optical purity for reproducible sweetener quality.
5.2 Food & Flavor
● Flavoring substance (FEMA 3656): food-flavor applications.
● Amino-acid seasoning and nutrition fortification in food products.
● Food-grade supply with documented purity and heavy-metal compliance.
5.3 Dietary & Sports Nutrition
● Amino-acid supplement raw material: capsules, tablets and powder formulations.
● Mineral aspartates: potassium aspartate, magnesium aspartate, calcium aspartate — chelated mineral forms.
● Electrolyte and mineral nutrition: balanced aspartate mineral complexes.
5.4 Fermentation & Industrial
● Culture media: preparation of fermentation and biological culture media.
● Organic intermediate: amino-acid chemistry for fine chemicals.
● Industrial uses: detergents, fungicides, germicides and metal complexation.
6. Packaging, Storage
Packaging (customizable):
● 25 kg multi-wall paper bags with PE liner (food-grade); 1,000 kg big bags; small packs on request;
● White crystalline powder — keep packaging dry and intact.
Storage:
● Store in a cool, dry, well-ventilated area; keep containers tightly closed;
● Avoid moisture and prolonged high temperature (decomposes at ≈ 270 °C);
● Keep away from strong oxidizers and incompatible acids/bases.
● Factory-direct supply: own production and sourcing capability, transparent pricing, no middleman markup.
● Stable quality: strict internal control, every batch tested (assay, optical rotation, purity, residue on ignition), COA with every shipment.
● Fast response: quotations and technical support (COA, SDS, application advice); small trial orders accepted.
L-Aspartic acid is used as the raw material for the low-calorie sweetener aspartame, as a recognized food flavoring substance (FEMA 3656), as an amino-acid supplement raw material and in mineral aspartate forms (potassium, magnesium, calcium), as a building block in peptide, in fermentation culture media, and in industrial applications including detergents, fungicides, germicides and metal complexation.
L-Aspartic acid (CAS 56-84-8, (2S)) and D-aspartic acid (CAS 1783-96-6, (2R)) are mirror-image enantiomers with identical physical constants — same melting point (≈ 270 °C, decomposition), solubility and pKa values — differing only in optical rotation. L-Aspartic acid is the form found in proteins and plants and animals, and it is the form required for aspartame and most food and nutrition applications; D-aspartic acid is the form used in specialty supplement and chiral-synthesis applications. Always specify the exact form and CAS number when ordering.
L-Aspartic acid is a natural non-essential amino acid found in protein foods and is a recognized flavoring substance (FEMA 3656). It is also the amino-acid component of aspartame, one of the world's most studied sweeteners, which is approved for food use in the EU, USA and many other markets. Handle the powder with normal dust hygiene and follow the SDS.
