L-天冬氨酸，L-天冬酸

Description

Aspartic Acid is identified by CAS 56-84-8, molecular formula C4H7NO4 and molecular weight 133.04 g/mol. UNII 30KYC7MIAI; ChEBI 17053; InChIKey CKLJMWTZIZZHCS-REOHCLBHSA-N. Melting Point: 270; Melting Point: 270-271 °C; Melting Point: 270 °C.

Identification

CAS Registry Number	56-84-8
PubChem CID	5960
Molecular formula	C4H7NO4
Molecular weight	133.04 g/mol
IUPAC name	(2S)-2-aminobutanedioic acid
InChIKey	CKLJMWTZIZZHCS-REOHCLBHSA-N
UNII (FDA)	30KYC7MIAI
ChEBI ID	CHEBI:17053
FEMA number	3656
JECFA number	1429

Computed Descriptors

Molecular Weight	133.10
XLogP3	-2.8
Hydrogen Bond Donor Count	3
Hydrogen Bond Acceptor Count	5
Rotatable Bond Count	3
Exact Mass	133.03750770
Monoisotopic Mass	133.03750770
Topological Polar Surface Area	101
Heavy Atom Count	9
Formal Charge	0

Physical & Chemical Properties

Melting Point	270
Melting Point	270-271 °C
Melting Point	270 °C
Solubility	5390
Solubility	In water, 5,360 mg/L at 25 °C
Solubility	5.39 mg/mL
Density	1.6603 at 13 °C
Density	1.7 g/cm³
Vapor Pressure	0.0000013 [mmHg]
LogP	-3.89

Physical description & handling notes

• Dry Powder
• Colorless solid; [ICSC] White powder; [Sigma-Aldrich MSDS]
• Solid
• COLOURLESS CRYSTALS.
• White crystals or crystalline powder; odourless
• White, crystalline solid

Regulatory Status

Regulatory & Food Contact	EU Flavoring substances FDA Substance added to food: FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT, NUTRIENT SUPPLEMENT Flavoring Agents FLAVOURING_AGENT: Flavouring Agent No safety concern at current levels of intake when used as a flavouring agent TRS 928-JECFA 63/98
GHS notification summary	94.4% (340 / 360)

GHS Hazard Classification

GHS notification summary	94.4% (340 / 360)

Documented Uses

• A non-essential amino acid; [Merck Index] [REPROTOX] Used in biological and clinical studies, to make culture media, and in aspartame products (detergents, fungicides, germicides, and metal complexations); [HSDB] Used in chemical synthesis, cosmetics, food additives, and pharmaceuticals; [IUCLID] Used as a flavoring agent and nutritional supplement; [FDA]
• BIOLOGICAL & CLINICAL STUDIES; PREPN OF CULTURE MEDIA; ORG INTERMEDIATE; INGREDIENT OF ASPARTAME; DETERGENTS; FUNGICIDES; GERMICIDES; METAL COMPLEXATION /ASPARTIC ACID/
• Used in flavor reaction products and pharmaceuticals formulations and intermediates
• Used as a raw material in the synthesis of peptide drugs
• For more Uses (Complete) data for (L)-ASPARTIC ACID (7 total), please visit the HSDB record page.
• Use (kg; approx.) in Germany (2009): >1000

Synonyms

L-aspartic acid; aspartic acid; 56-84-8; (2S)-2-aminobutanedioic acid; Asparagic acid; L-Aminosuccinic acid; (S)-2-Aminosuccinic acid; Asparaginic acid; L-Asparaginic acid; L-Asparagic acid; (S)-Aspartic acid; Aspartic acid, L-; (S)-Aminobutanedioic acid; L-Asparaginsaeure; Acidum asparticum; L-(+)-Aspartic acid

Frequently Asked Questions

What are the CAS number and molecular formula of Aspartic Acid?

CAS 56-84-8; molecular formula C4H7NO4; molecular weight 133.04 g/mol.

What other names is Aspartic Acid known by?

L-aspartic acid, aspartic acid, 56-84-8, (2S)-2-aminobutanedioic acid, Asparagic acid, L-Aminosuccinic acid.

What is the regulatory status of Aspartic Acid?

Documented regulatory listings: EU Flavoring substances; FDA Substance added to food: FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT, NUTRIENT SUPPLEMENT; Flavoring Agents.

Is Aspartic Acid classified as hazardous?

94.4% of GHS notifications report no hazard classification (340 of 360).

What are the key physical properties of Aspartic Acid?

Melting Point: 270; Melting Point: 270-271 °C; Melting Point: 270 °C; Solubility: 5390.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.