DL-Alanine
- CAS No.
- 302-72-7
- Chemical Name:
- DL-Alanine
- Synonyms
- FEMA 3818;DL-Ala-OH;H-DL-ALA-OH;DL-ALA;DL-Alanin;DL-Alaine;DL-ALANINE;ALANINE, DL-;DL-α-Alanine;(r,s)-alanine
- CBNumber:
- CB9143191
- Molecular Formula:
- C3H7NO2
- Molecular Weight:
- 89.09
- MDL Number:
- MFCD00064408
- MOL File:
- 302-72-7.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Melting point | 289 °C (dec.) (lit.) |
|---|---|
| Boiling point | 212.9±23.0 °C(Predicted) |
| Density | 1,424 g/cm3 |
| refractive index | 1.4650 (estimate) |
| FEMA | 3818 | DL-ALANINE |
| FLAVIS Number | 17.024 | D,L-Alanine |
| storage temp. | Keep in dark place,Inert atmosphere,Room temperature |
| solubility | H2O: soluble |
| form | Crystals or Crystalline Powder |
| pka | pK1 2.35; pK2 9.87(at 25℃) |
| color | White |
| Odor | at 100.00 %. odorless |
| Odor Type | odorless |
| biological source | synthetic |
| Water Solubility | 156 g/L (20 ºC) |
| Merck | 14,204 |
| JECFA Number | 1437 |
| BRN | 635807 |
| Henry's Law Constant | 3.5×1010 mol/(m3Pa) at 25℃, Brimblecombe et al. (1992) |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| Major Application | flavors and fragrances |
| Cosmetics Ingredients Functions |
HAIR CONDITIONING SKIN CONDITIONING ANTISTATIC FRAGRANCE |
| InChI | 1S/C3H7NO2/c1-2(4)3(5)6/h2H,4H2,1H3,(H,5,6) |
| InChIKey | QNAYBMKLOCPYGJ-UHFFFAOYSA-N |
| SMILES | CC(N)C(O)=O |
| LogP | -2.85 at 25℃ |
| CAS DataBase Reference | 302-72-7(CAS DataBase Reference) |
| Substances Added to Food (formerly EAFUS) | DL-ALANINE |
| FDA 21 CFR | 172.540 |
| EWG's Food Scores | 1 |
| FDA UNII | 1FU7983T0U |
| NIST Chemistry Reference | DL-Alanine(302-72-7) |
| EPA Substance Registry System | Alanine (302-72-7) |
| UNSPSC Code | 12352209 |
| NACRES | NA.26 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H315-H319-H335 | |||||||||
| Precautionary statements | P261-P271-P280 | |||||||||
| PPE | Eyeshields, Gloves, type N95 (US) | |||||||||
| Hazard Codes | Xi | |||||||||
| Risk Statements | 36/37/38 | |||||||||
| Safety Statements | 22-24/25-36-26 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | AY2980000 | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 29224995 | |||||||||
| Storage Class | 11 - Combustible Solids | |||||||||
| REACH Registrations | Active | |||||||||
| NFPA 704 |
|
DL-Alanine price More Price(86)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | W381810 | 302-72-7 | 1 each | $58 | 2026-04-30 | Buy | |
| Sigma-Aldrich | W381810 | DL-Alanine ≥99%, FCC, FG | 302-72-7 | 1kg | $75 | 2026-04-30 | Buy |
| Sigma-Aldrich | W381810 | DL-Alanine ≥99%, FCC, FG | 302-72-7 | 5kg | $375 | 2026-04-30 | Buy |
| Sigma-Aldrich | W381810 | DL-Alanine ≥99%, FCC, FG | 302-72-7 | 10Kg | $665 | 2026-04-30 | Buy |
| Sigma-Aldrich | A7502 | DL-Alanine ≥99% (HPLC) | 302-72-7 | 1kg | $200 | 2026-04-30 | Buy |
DL-Alanine Chemical Properties, Uses, Production
Description
DL-Alanine is the racemic modification of alanine, which si a non-essential amino acid that occurs in high levels in its free state in plasma. DL-Alanine is a colorless to white needle crystal or crystalline powder that is odorless and has a peculiarly sweet taste. It begins to sublime above 200℃ and the melting point is 297℃ (decomposition). It dissolves readily in water(25℃, 17%), slightly in ethanol and insoluble in ether. DL-Alanine is mainly used in food processing industry for nutritional supplements and seasoning, and also used in pharmaceutical industry. DL-alanine could enhance the effect of chemical seasoning sauce. Wiith a special sweet taste, DL-Alanine can improve the artificial sweetener, the acidity of organic acid and the flavor of vinegar. With sour, DL-Alanine could make salt fast tasty, to improve the effect of pickled vegetables and pichles. It could shorten the curing time and improve the flavor. As sour correction agent and buffer in synthesis of wine and drink, DL-Alanine could prevent foaming wine aging and reduce the smell of yeast. With antioxidant properties, DL-Alanine could be used in a vatiety of food processing, such as oil, egg yolk sauce, grains, soy sauce dipping food, rice bran preservend food.
Chemical Properties
DL-Alanine is a colorless to white odorless needle crystal or crystalline powder with a sweet taste. Taste threshold 0.06%. Those recrystallized from water-ethanol liquid are orthorhombic crystals, and those recrystallized from water are needle crystals or crystalline powders. The PH value of 5% aqueous solution is 5.5~7.0. It melts and decomposes at about 295~300°C. Chemical properties is stable. In case of nitrous acid, it can be transformed into L-lactic acid. Soluble in water (16.72g/100ml, 25°C). Slightly soluble in ethanol. No optical activity.
Occurrence
Natural constituent of protein in plants and animals; found in apple, beef, carob, pea, soybean, wine and zucchini
Uses
DL-Alanine is used in mixed ligand (chelate) studies with transition metals such as Cu(II), Zn(ll) and Cd(ll). It is a functional component in the alanine cycle which regulates the level of alanine aminotransferases which can be used as a diagnostic tool to predict type II diabetes. It is used as a model reagent for development of amino acid racemic resolution techniques.
Uses
Alanine is an amino acid that occurs naturally in nature. It is a functional component in the alanine cycle which regulates the level of alanine aminotransferases which can be used as a diagnostic too l to predict type II diabetes.
Definition
ChEBI: DL-Alanine is an alpha-amino acid that consists of propionic acid bearing an amino substituent at position 2. It has a role as a fundamental metabolite. It is functionally related to a propionic acid. It is a conjugate base of an alaninium. It is a conjugate acid of an alaninate. It is a tautomer of an alanine zwitterion.
Preparation
Anthrobacter oxydans HAP-1 hyper produces DL-alanine in a nongrowth-associated manner.
Biological Functions
DL-Alanine is a non-essential amino acid that occurs in high levels in its free state in plasma. It is produced from pyruvate by transamination. It is involved in sugar and acid metabolism, increases immunity, and provides energy for muscle tissue, Brain, and the central nervous system.
Flammability and Explosibility
Non flammable
References
1.https://www.ncbi.nlm.nih.gov/mesh/68000409
2.https://www.ulprospector.com/en/na/Food/Detail/16049/381925/DL-Alanine
3.http://www.sinogel.com/products_detail_en/id/3.html
4.http://www.hugestone-china.com/product_detail/id/63.html
DL-Alanine Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Huaibei Desung Biotech Co., Ltd. | 0561-2337889 13515618601 | 390478052@qq.com | China | 1967 | 58 |
| Guangdong Mingtong Biotechnology Co., Ltd | 13112222280 | 3406958264@qq.com | China | 2487 | 58 |
| Shandong Siyang Biotechnology Co., Ltd. | 15666921172 | 1149952749@qq.com | China | 1262 | 58 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 | market03@meryer.com | China | 40202 | 62 |
| Alfa Aesar | 400-6106006 | saleschina@alfa-asia.com | China | 30103 | 84 |
| TCI (Shanghai) Development Co., Ltd. | 021-67121386 | Sales-CN@TCIchemicals.com | China | 24512 | 81 |
| Beijing HwrkChemical Technology Co., Ltd | 89508211 18501085097 | sales.bj@hwrkchemical.com | China | 9409 | 55 |
| Capot Chemical Co., Ltd | +86 (0) 571 85 58 67 18 | China | 18187 | 66 | |
| Beijing Ouhe Technology Co., Ltd | 13552068683 13522913783 | 2355560935@qq.com | China | 11777 | 60 |
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- Oct 8,2024
View Latest Price from DL-Alanine manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-09-24 | DL-Alanine
302-72-7
|
1KG | 98%min | 500kgs | WUHAN FORTUNA CHEMICAL CO., LTD | ||
 |
2026-08-25 | DL-Alanine
302-72-7
|
$35.00-350.00 | 1KG | 0.98 | 20 tons | Zibo Hangyu Biotechnology Development Co., Ltd | |
 |
2026-05-28 | DL-Alanine
302-72-7
|
$30.00 | 1KG | 99% | 5000kg | Hebei Chuanghai Biotechnology Co,.LTD |
-
- DL-Alanine
302-72-7
- $0.00
- 98%min
- WUHAN FORTUNA CHEMICAL CO., LTD
-
- DL-Alanine
302-72-7
- $35.00-350.00
- 0.98
- Zibo Hangyu Biotechnology Development Co., Ltd
-
- DL-Alanine
302-72-7
- $30.00
- 99%
- Hebei Chuanghai Biotechnology Co,.LTD
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