Gluconic acid
Gluconic acid
CAS: 526-95-4
Molecular Formula: C6H12O7
Gluconic acid - Names and Identifiers
| Name | Gluconic acid |
| Synonyms | Hexonic acid glyconicacid GLUCONIC ACID Gluconic acid MALTONIC ACID D-Gluconic acid GLYCOGENIC ACID Gluconicacidaqsoln Gluconic Acid Solution PENTAHYDROXYCAPROIC ACID D-Gluconic acid solution 2,3,4,5,6-PENTAHYDROXYCAPROIC ACID Ultra-Mg [as magnesium salt dihydrate] (2R,3S,4R,5R)-2,3,4,5,6-pentahydroxyhexanoate (non-preferred name) |
| CAS | 526-95-4 |
| EINECS | 208-401-4 |
| InChI | InChI=1/C6H12O7/c7-1-2(8)3(9)4(10)5(11)6(12)13/h2-5,7-11H,1H2,(H,12,13)/p-1/t2-,3-,4+,5-/m1/s1 |
Gluconic acid - Physico-chemical Properties
| Molecular Formula | C6H12O7 |
| Molar Mass | 196.16 |
| Density | 1.23 |
| Melting Point | 15 °C |
| Boling Point | 102 °C |
| Specific Rotation(α) | D20 -6.7° (c = 1) |
| Flash Point | 375.1°C |
| Water Solubility | Soluble in water. |
| Solubility | DMSO (Slightly), Methanol (Slightly), Water |
| Vapor Presure | 4.95E-21mmHg at 25°C |
| Appearance | Crystalline Powder or Crystals |
| Specific Gravity | 1.234 |
| Color | White to light yellow |
| Merck | 14,4456 |
| BRN | 1726055 |
| pKa | pK (25°) 3.60 |
| Storage Condition | Store below +30°C. |
| Refractive Index | 1.4161 |
| MDL | MFCD00004240 |
| Physical and Chemical Properties | Slightly acidic crystals. Melting point 131 °c, 50% aqueous solution relative density 1.24(25 °c). Soluble in water, slightly soluble in alcohol, insoluble in ethanol and most organic solvents. |
| Use | Used as protein coagulant and food preservative |
Gluconic acid - Risk and Safety
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R34 - Causes burns |
| Safety Description | S37/39 - Wear suitable gloves and eye/face protection S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. |
| UN IDs | 3265 |
| WGK Germany | - |
| RTECS | LZ5057100 |
| TSCA | Yes |
| HS Code | 29181600 |
| Hazard Class | 8 |
| Packing Group | III |
Gluconic acid - Nature
Open Data Verified Data
slightly acidic crystals. Melting point 131 ℃,50% aqueous solution relative density 1. 24 (25 ℃). Soluble in water, slightly soluble in alcohol, insoluble in ethanol and most organic solvents.
Last Update：2024-01-02 23:10:35
Gluconic acid - Preparation Method
Open Data Verified Data
gluconic acid can be produced by glucose oxidation or biological fermentation.
Last Update：2022-01-01 10:31:46
Gluconic acid - Use
Open Data Verified Data
for the production of gluconate such as sodium gluconate, potassium gluconate, calcium gluconate, etc.
Last Update：2022-01-01 10:31:46
Gluconic acid - Safety
Open Data Verified Data
This product is almost non-toxic, non-corrosive, non-irritating odor.
Last Update：2022-01-01 10:31:47
Gluconic acid - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Sugar acid | Gluconic acid is also called dextrogluconic acid. Under the action of weak oxidants or enzymes, the aldehyde group in the molecule is oxidized to carboxyl A sugar acid formed. Its 6-phosphate is an intermediate of the oxidative decomposition of glucose in the organism (pentose phosphate pathway). It forms soluble salts with metal ions such as calcium and zinc as nutrients and drugs. |
| uses | calcium salt, ferrous salt, bismuth salt and other salts of gluconic acid can be used as medicine; the metal complexes of this product are widely used in alkaline systems The masking agent for metal ions; aqueous solution is used as a food sour agent; the preparation of sake; bottle washing agent; de-lactis for dairy equipment, etc. Protein coagulants and food preservatives. Used to produce gluconate such as sodium gluconate, potassium gluconate, calcium gluconate, etc. Used as protein coagulant and food preservative |
| Preparation method | ① Glucose can be oxidized to produce gluconic acid [1]. [1] can be prepared under the action of weak oxidants (such as bromine water); under the action of strong oxidants, in addition to the aldehyde group being oxidized to form a carboxyl group, the primary alcohol group is also oxidized to a carboxyl group to form glucosaric acid. ② citric acid is used as raw material, and aftromycin strain is used for fermentation at 25~30 ℃ at pH = 3.5 or above to obtain [1]. At the same time, oxalic acid is produced. Then use calcium hydroxide to separate and remove oxalic acid. fig. 2 is a chemical reaction roadmap for preparing gluconic acid from citric acid. ③Glucose is electrolytically oxidized in alkaline solution to produce [1]. ④ calcium gluconate (or sodium) is decomposed with sulfuric acid, refined by ion exchange resin, evaporated and concentrated to obtain [1]. |
| Production method | Gluconic acid can be produced by glucose oxidation or biological fermentation. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 02:00:09
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