DL-Asparaginsαure
DL-Aspartic Acid
CAS: 617-45-8
Molecular Formula: C4H7NO4
DL-Asparaginsαure - Names and Identifiers
DL-Asparaginsαure - Physico-chemical Properties
| Molecular Formula | C4H7NO4 |
| Molar Mass | 133.1 |
| Density | 1.6622 |
| Melting Point | 300 °C |
| Boling Point | 245.59°C (rough estimate) |
| Specific Rotation(α) | [α]D20 0±0.3° (c=5, dil. HCl) |
| Flash Point | 113.5°C |
| Water Solubility | SOLUBLE |
| Solubility | SOLUBLE |
| Vapor Presure | 0.00289mmHg at 25°C |
| Appearance | White crystal |
| Color | Yellow |
| Odor | acid taste |
| BRN | 774618 |
| pKa | 2.28±0.23(Predicted) |
| Storage Condition | Keep in dark place,Inert atmosphere,Room temperature |
| Sensitive | Easily absorbing moisture |
| Refractive Index | 1.4540 (estimate) |
| MDL | MFCD00063083 |
| Physical and Chemical Properties | Properties: colorless or white odorless crystals, sour taste, no optical activity, insoluble in water, insoluble in ethanol and ether |
| Use | For amino acid infusion, synthetic medicine, can be used for the treatment of liver disease and heart disease, also used in cosmetics |
DL-Asparaginsαure - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. S36 - Wear suitable protective clothing. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| WGK Germany | 3 |
| RTECS | CI9097800 |
| TSCA | Yes |
| HS Code | 29224995 |
| Toxicity | LD50 ipr-mus: >6 g/kg KHFZAN 24(5),17,90 |
DL-Asparaginsαure - Upstream Downstream Industry
| Raw Materials | L(+)-Aspartic acid Charcoal Sulfuric acid |
| Downstream Products | dl-aspartic acid hemimagnesium |
DL-Asparaginsαure - Introduction
It exists in animals or in tender bodies such as sugar cane and sugar beet. It can be soluble in acid and alkali salt solution, soluble in water, insoluble in alcohol and ether.
Last Update：2022-10-16 17:27:10
DL-Asparaginsαure - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Introduction | DL-aspartic acid is colorless or white and odorless crystals, with sour taste. No optical rotation. It melts and decomposes at about 280 °c. Insoluble in water, insoluble in ethanol and ether. It is a non-essential amino acid and can be used as a nutritional supplement. |
| uses | DL-aspartic acid (DL-Asp) has important uses in medicine, can be used for the synthesis of DL-aspartic acid potassium magnesium salt (vein diazepam) for the treatment of arrhythmia, tachycardia, heart failure, myocardial infarction, angina pectoris, hepatitis and cirrhosis and other diseases, is an intermediate of synthetic polypeptide. nutritional supplements. used as biochemical reagents, organic synthesis intermediates and metal complexing agents used in amino acid infusion, synthetic drugs, can be used in the treatment of liver disease and heart disease, also used in cosmetics used in biochemical research. biochemical and medical clinical research, microbial culture medium. |
| content analysis | accurately weigh about 200rag of the sample and dissolve it in a mixture of 3ml formic acid and 50ml glacial acetic acid, crystal violet test solution (TS-74) was added 2 drops, and titrated with 0.1mol/L perchloric acid to the green end point, or until the blue color completely disappeared. Perchloric acid is equivalent to 13.31mg C4H7NO4 per Ml of 0.Imol/L. |
| toxicity | can be used safely in foods (FDA § 172.320,2000). |
| usage limit | accounts for 7.0% of the total protein in food (including I, asparagine; FDA § 172.320,2000). |
| production method | with maleic anhydride as raw material, adding benzyl ammonia reflux for several hours, acetone precipitation, recrystallization, then catalytic hydrogenation, the product was purified. From maleic acid ketone and benzylamine reaction, after acetone precipitation, crystallization in ethanol, with ether extraction and acidification, after hydrogenation refined. |
| category | toxic substances |
| toxicity grade | low toxicity |
| Acute toxicity | intraperitoneal-rat LD50: > 6000 mg/kg |
| flammability hazard characteristics | flammability; Toxic NOx smoke from combustion |
| storage and transportation characteristics | ventilation and low temperature drying |
| fire extinguishing agent | dry powder, foam, sand, carbon dioxide, water mist |
Last Update：2024-04-09 21:32:07
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Raw Materials for DL-Asparaginsαure
Downstream Products for DL-Asparaginsαure