Adipic acid
CAS Number: 124-04-9
Chemical Formula: C6H10O4
Synonyms: DICARBOXYLIC ACID C6，BUTANE-1,4-DICARBOXYLIC ACID，1,4-BUTANEDICARBOXYLIC ACID
Appearance: White Solid
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Adipic acid is a crystalline powder that is nearly odorless. It shows the mildest acidity among common food-grade acids and provides strong buffering performance within pH 2.5 to 3.0. Similar to succinic acid and fumaric acid, it barely absorbs moisture from air. When added to food products, it brings a mild and refreshing tart taste. In grape-flavored items, it delivers a long-lasting complementary flavor and helps gelatin-containing food powders form ideal textures.
Chemical Properties
| Item | Value |
| Melting point | 151-154 °C(lit.) |
| Boiling point | 265 °C at 100 mm Hg(lit.) |
| bulk density | 700 kg/m3 |
| density | 1.36 g/cm3 |
| vapor density | 5 (vs air) |
| vapor pressure | 1 mm Hg at 159.5 °C |
| refractive index | 1.4880 |
| FEMA | 2011 ADIPIC ACID |
| Fp | 385 °F |
| storage temp. | Store below +30°C. |
| solubility | methanol: 0.1 g/mL, clear, colorless |
| pka | 4.43 at 25℃ |
| form | Solid |
| color | White |
| Odor | white monoclinic prisms, practically odorless |
| PH | 3.74 (1 mM solution); 3.22 (10 mM solution); 2.71 (100 mM solution) |
| biological source | synthetic |
| Water Solubility | 1.44 g/100 mL at 15 ºC |
| Merck | 14,162 |
| JECFA Number | 623 |
| BRN | 1209788 |
| Dielectric constant | 1.8 at ambient temperature |
| Exposure limits | ACGIH: TWA 5 mg/m3 |
| Stability: | Stable. Incompatible with ammonia and strong oxidizing agents. |
| Cosmetics Ingredients Functions | FRAGRANCE BUFFERING |
| InChIKey | WNLRTRBMVRJNCN-UHFFFAOYSA-N |
| LogP | 0.09 at 25℃ |
| CAS DataBase Reference | 124-04-9(CAS DataBase Reference) |
| NIST Chemistry Reference | Hexanedioic acid(124-04-9) |
| EPA Substance Registry System | Adipic acid (124-04-9) |
Safety Information
| Item | Value |
| Hazard Codes | Xi |
| Risk Statements | 36-41 |
| Safety Statements | 26-39-24/25 |
| RIDADR | UN3077 |
| WGK Germany | 1 |
| RTECS | AU8400000 |
| Autoignition Temperature | 788 °F |
| TSCA | Yes |
| HazardClass | 9 |
| HS Code | 29171210 |
| Hazardous Substances Data | 124-04-9(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: 5700 mg/kg; LD50 dermal in Rabbit > 7940 mg/kg |
Product Application
Adipic acid serves as an acidulant and flavor regulator. It is stable, non-hygroscopic and slightly soluble in water, with a solubility of about 1.9 g/100 mL at 20°C. At a 0.6% concentration, it reaches pH 2.86 at 25°C. It is used in powdered drinks, beverages, gelatin desserts, lozenges and canned vegetables. It also acts as a leavening acid in baking powder. It can be used as a buffer to maintain pH between 2.5 and 3.0. In some cases, it is added to edible oils to prevent oxidation and rancidity.
Supply & Delivery
Fast delivery time
Inventory: 2-3 working days
New production: 7-10 working days
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