ChemicalBook > CAS DataBase List > DL-Alanine

DL-Alanine

Product Name
DL-Alanine
CAS No.
302-72-7
Chemical Name
DL-Alanine
Synonyms
DL-Ala-OH;FEMA 3818;DL-ALA;DL-Alanin;DL-ALANINE;H-DL-ALA-OH;ALANINE, DL-;(r,s)-alanine;DL-Alanine 0.1;ALANINE, alpha
CBNumber
CB9143191
Molecular Formula
C3H7NO2
Formula Weight
89.09
MOL File
302-72-7.mol
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DL-Alanine Property

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
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
Water Solubility 
156 g/L (20 ºC)
Merck 
14,204
JECFA Number
1437
BRN 
635807
Stability:
Stable. Incompatible with strong oxidizing agents.
LogP
-2.85 at 25℃
CAS DataBase Reference
302-72-7(CAS DataBase Reference)
NIST Chemistry Reference
DL-Alanine(302-72-7)
EPA Substance Registry System
Alanine (302-72-7)
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Safety

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
22-24/25-36-26
WGK Germany 
3
RTECS 
AY2980000
TSCA 
Yes
HS Code 
29224995
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
W381810
Product name
DL-Alanine
Purity
≥99%, FCC, FG
Packaging
1kg
Price
$70.9
Updated
2024/03/01
Sigma-Aldrich
Product number
W381810
Product name
DL-Alanine
Purity
≥99%, FCC, FG
Packaging
5kg
Price
$353
Updated
2024/03/01
Sigma-Aldrich
Product number
W381810
Product name
DL-Alanine
Purity
≥99%, FCC, FG
Packaging
10Kg
Price
$649
Updated
2024/03/01
Sigma-Aldrich
Product number
A7502
Product name
DL-Alanine
Purity
≥99% (HPLC)
Packaging
1kg
Price
$176
Updated
2024/03/01
Sigma-Aldrich
Product number
A7502
Product name
DL-Alanine
Purity
≥99% (HPLC)
Packaging
5kg
Price
$664
Updated
2024/03/01
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DL-Alanine Chemical Properties,Usage,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

Raw materials

Ammonium hydroxide Propionic acid Chlorine 2-Chloropropionic acid Ammonium chloride HYDROGEN CYANIDE D-Alanine Methanol Hexamethylenetetramine Cyanamide Sodium propionate Ammonia

Preparation Products

ETHYL 2-(2-FORMYL-4,5-DIMETHYL-1H-PYRROL-3-YL)ACETATE 6,7-DIMETHOXY-3-METHYL-1,2,3,4-TETRAHYDROISOQUINOLINE HYDROCHLORIDE 1-Boc-2-Methylpiperazine 2-(8-BROMO-2,3,6,7-TETRAHYDRO-BENZO[1,2-B:4,5-B']DIFURAN-4-YL)-1-METHYL-ETHYLAMINE
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View Lastest Price from DL-Alanine manufacturers

WUHAN FORTUNA CHEMICAL CO., LTD
Product
DL-Alanine 302-72-7
Price
US $0.00/Kg/Drum
Min. Order
1KG
Purity
98%min
Supply Ability
500kgs
Release date
2021-09-28
Hebei Weibang Biotechnology Co., Ltd
Product
DL-Alanine 302-72-7
Price
US $1.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
10 mt
Release date
2024-11-06
Hebei Chuanghai Biotechnology Co,.LTD
Product
DL-Alanine 302-72-7
Price
US $30.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
5000kg
Release date
2024-08-21

302-72-7, DL-AlanineRelated Search:

L-Alanine DL-Malic acid Ethyl 2-(Chlorosulfonyl)acetate EC 2.6.1.2 Glycine Folic acid DL-Phenylalanine Phenprobamate D-Alanine DL-Homoserine Homocystine DL-Methionine Liothyronine sodium Methyl L-tyrosinate DL-3-(4-Fluorophenyl)alanine 3-(3-Hydroxyphenyl)-DL-alanine Sodium levothyroxine CHLOROACETYL-L-TYROSINE

  • (R,S)-2-Amino-propionicacid
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