| Identification | More | [Name]
Sodium erythorbate | [CAS]
6381-77-7 | [Synonyms]
D(+)-ISOASCORBIC ACID SODIUM SALT
D-ISOASCORBIC ACID SODIUM SALT
ERYTHORBIC ACID SODIUM SALT
ISOASCORBIC ACID SODIUM SALT
SODIUM D-ISOASCORBATE
SODIUM ERYTHORBATE
SODIUM-ISO-ASCORBATE
3-keto-d-gulofuranolactose
erbitn
eribaten
isoascorbic
isona
mercate20
neo-cebitate
ozoban
sodiumd-erythro-3-oxohexonatelactone
sodiumenolatemonohydrate
D-Isoascorbic acid Na salt
Araboascorbinicacidsodiumsalt
d-araboascorbic acid sodium salt | [EINECS(EC#)]
228-973-9 | [Molecular Formula]
C6H7NaO6 | [MDL Number]
MFCD00067298 | [Molecular Weight]
198.11 | [MOL File]
6381-77-7.mol |
| Chemical Properties | Back Directory | [Appearance]
WHITE CRYSTALLINE POWDER | [Melting point ]
154-164°C (decomposes) | [alpha ]
97 º (c=1,DMF) | [density ]
1.702[at 20℃] | [vapor pressure ]
0Pa at 25℃ | [refractive index ]
97 ° (C=10, H2O) | [storage temp. ]
Sealed in dry,Room Temperature | [solubility ]
Soluble in DMSO | [form ]
solid | [color ]
Light yellow to yellow | [Odor]
at 100.00?%. odorless | [Water Solubility ]
146g/L at 20℃ | [InChI]
InChI=1/C6H8O6.Na.H/c7-1-2(8)5-3(9)4(10)6(11)12-5;;/h2,5,7-10H,1H2;;/t2-,5-;;/s3 | [InChIKey]
RALCFXKKGFGHCA-DJDVHRGRNA-N | [SMILES]
[C@@H]([C@@]1([H])OC(=O)C(O)=C1O)(O)CO.[NaH] |&1:0,1,r| | [LogP]
-3.29 | [Uses]
Sodium Erythorbate is an antioxidant that is the sodium salt of
erythorbic acid. in the dry crystal state it is nonreactive, but in water
solution it readily reacts with atmospheric oxygen and other oxidiz-
ing agents, a property that makes it valuable as an antioxidant.
during preparation, a minimal amount of air should be incorpo-
rated and it should be stored at a cool temperature. it has a solubility
of 15 g in 100 ml of water at 25°c. on a comparative basis, 1.09
parts of sodium erythorbate are equivalent to 1 part of sodium ascor-
bate; 1.23 parts of sodium erythorbate are equivalent to 1 part ery-
thorbic acid. it functions to control oxidative color and flavor
deterioration in a variety of foods. in meat curing, it controls and
accelerates the nitrite curing reaction and maintains the color
brightness. it is used in frankfurters, bologna, and cured meats and
is occasionally used in beverages, baked goods, and potato salad. it
is also termed sodium isoascorbate. | [CAS DataBase Reference]
6381-77-7(CAS DataBase Reference) | [EPA Substance Registry System]
6381-77-7(EPA Substance) |
| Hazard Information | Back Directory | [General Description]
Almost odorless fluffy, white to off-white crystalline powder. Used as an antioxidant and preservative. | [Reactivity Profile]
SODIUM ERYTHORBATE(6381-77-7) may be sensitive to prolonged exposure to light. Incompatible with strong oxidizing agents . | [Air & Water Reactions]
Water soluble. | [Fire Hazard]
Flash point data for this chemical are not available; however, SODIUM ERYTHORBATE is probably combustible. | [Chemical Properties]
Sodium erythorbate is a white to yellow-white crystalline powder or granules that are slightly salty and almost odorless. It is stable in the dry state but can deteriorate when exposed to air, trace metals, heat and light in solution. The compound has a melting point above 200℃ (decomposition) and is soluble in water (17g/100m1) but almost insoluble in ethanol. The pH of a 2% aqueous solution ranges from 5.5 to 8.0. | [Preparation]
It is produced through using D-glucose fermentation of Pseudomonas fluorescens Kl005 or Arthrobacter globiformis K1022 to produce 2-keto-D-gluconic acid (or calcium salt), followed by being esterified, transformed and refined. The composition of the fermentation medium is: glucose: 18; yeast extract 0.3; K2HPO4 ? 3H2O: 0.05; KH2PO4: 0.05; MgSO4 ? 7H2O: 0.025,;CaCO:34.5. The fermentation temperature is controlled at 30~35 ℃, the fermentation period is 30h, and the fermentation conversion ratio (%) is 79.9%. The fermentation broth is supplemented with sulfate and activated carbon for acidification and decoloring, followed by pressurized filtrate to obtain the clean liquid with a yield of 96.6%.
The purified fermentation broth was concentrated by decompression, and methanol and sulfuric acid were added for refluxed esterification of 5h, followed by frozen and centrifuged filtering to obtain methyl ester with a yield of 82.1%. The methyl ester was transformed with basic methanol solution under refluxing conditions, and the product was further frozen and crystallized to dryness to obtain the crude product of D-isoascorbic acid. The conversion yield was 87.3%, and it was dissolved in hot water and decolorized with activated carbon. The filtrate is pressurized filtrated and the supernatant liquid is frozen, crystallized, centrifugalized, washed and vacuum dried to obtain finished product.
The mother liquid is recovered and the yield is 88.0%. | [Flammability and Explosibility]
Nonflammable |
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