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Adipic acid

CAS 124-04-9HOOC(CH2)4COOHChemical Synthesis

Adipic acid (CAS: 124-04-9), a dicarboxylic acid with the linear formula HOOC(CH2)4COOH and a molecular weight of 146.14 g/mol, is a white crystalline solid. It is primarily utilised as a precursor in the synthesis of nylon 6,6 and other polymers. It also finds application as a plasticiser, in food additives as an acidity regulator, and in various chemical manufacturing processes.

IUPAC
Hexanedioic acid
Synonyms
Hexanedioic acid
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Adipic acid (HOOC(CH2)4COOH) — chemical structure, CAS 124-04-9; Chemistry, fine chemical supplied by Tech Serve Solutions
Building BlocksCarbonyl CompoundsCarboxylic AcidsChemical Synthesis
01 /Applications

Nylon 6,6 Precursor

Adipic acid is a key monomer in the production of Nylon 6,6, a widely used polyamide known for its strength and durability. This polymer is essential for textiles, automotive parts, and industrial components.

Polymer and Plasticiser Production

Beyond nylon, it serves as a building block for other polymers and is used to produce plasticisers, which enhance the flexibility and workability of plastics.

Food Acidity Regulator

In the food industry, adipic acid acts as an acidity regulator and buffering agent, contributing to the flavour profile of various food products.

Chemical Synthesis Intermediate

Its dicarboxylic acid structure makes it a versatile intermediate in organic synthesis for creating a range of specialty chemicals and reagents.

02 /Properties
Molecular weight146.14
Linear formulaHOOC(CH2)4COOH
Assay≥99.0% (HPLC)
GradeSAJ special grade
Boiling point265 °C/100 mmHg(lit.)
Solubilitymethanol: soluble0.1 g/mL, clear, colorlessH2O: slightly solubleacetone: solublebenzene: insolubleboiling water: solublecyclohexane: slightly solubleethanol: freely solublemethanol: freely solublepetroleum ether: insoluble
Vapour pressure1 mmHg (159.5 °C)
Melting point151-154 °C(lit.)151-154 °C
Vapour density5 (vs air)
Autoignition temp788 °F
03 /Safety & handling
GHS hazard pictogram: Corrosive (GHS05)
Corrosive
Danger

Hazard statements

  • H318Causes serious eye damage

Precautionary statements

  • P280Wear protective gloves, clothing and eye/face protection
  • P305IF IN EYES
Protective equipmentdust mask type N95 (US), Eyeshields, Gloves
Flash point196 °C / 384.8 °F
Transport (UN / ADR)UN 3077 9 / PGIII
Water hazard class (WGK, DE)1
Hazard codes (EU)Xi
Risk statements (R)41
Safety statements (S)26-39
Ignition residue≤0.05%

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry
CAS number
124-04-9
Beilstein registry
1209788
05 /Additional specifications
Availabilityavailable only in Japan
06 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

07 /Frequently asked questions

What is Adipic Acid used for?

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Adipic acid is predominantly used as a key monomer in the production of Nylon 6,6, and also finds applications in manufacturing other polymers, plasticisers, and as a food acidity regulator. It is also an important intermediate in chemical synthesis.

What is the CAS number and formula for Adipic Acid?

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The CAS number for Adipic Acid is 124-04-9 and its linear formula is HOOC(CH2)4COOH.

What grade and purity does Tech Serve Solutions supply?

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Tech Serve Solutions supplies Adipic Acid in SAJ special grade with a purity of ≥99.0% (HPLC). We do not represent this product as USP, BP, or EP grade.

How should Adipic Acid be handled safely?

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Adipic Acid carries a danger signal word and a hazard statement (H318) for serious eye damage. Recommended personal protective equipment includes a dust mask (NIOSH type N95), eyeshields, and gloves. Always consult the Safety Data Sheet (SDS) before handling.

Is Adipic Acid available for export?

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Adipic Acid is currently available only in Japan. Please contact TSS for specific export inquiries or alternative product sourcing.

How can I request a quote or sample?

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To request a quote or sample of Adipic Acid, please contact our sales team through the website or your designated account manager.

Need Adipic acid in a specific grade or volume?