에리솔빈산나트륨

그림문자(GHS)

• 그림문자(GHS)

  

• 신호 어

  Warning

• 유해·위험 문구

  H320：눈에 자극을 일으킴

• 예방조치문구

  P264：취급 후에는 손을 철저히 씻으시오.

  P264：취급 후에는 손을 철저히 씻으시오.

에리솔빈산나트륨 MSDS

• D-Sodium isoascorbiate

에리솔빈산나트륨 화학적 특성, 용도, 생산

• 순도시험

    (1) 비선광도 : 이 품목 약 1g을 정밀히 달아 새로 끓여서 식힌 물에 녹여 10mL로하고 이 액의 선광도를 측정할 때, ＝+95.5～+98.0°이어야 한다.

    (2) 용상 : 이 품목 1g을 물 10mL에 녹일 때, 그 액은 징명하여야 하며 색은 비색표준용액 J보다 진하여서는 아니 된다.

    (3) 액성 : 이 품목의 수용액(1→20)의 pH는 5.5～8.0이어야 한다.

    (4) 비소 : 이 품목을 비소시험법에 따라 시험할 때, 그 양은 4.0ppm 이하이어야 한다.

    (5) 납 : 이 품목 5.0g을 취하여 원자흡광광도법 또는 유도결합플라즈마발광광도법에 따라 시험할 때, 그 양은 2.0ppm 이하이어야 한다.

    (6) 수은 : 이 품목을 수은시험법에 따라 시험할 때, 그 양은 1.0ppm 이하이어야 한다.

• 확인시험

    (1) 이 품목 0.1g을 메타인산용액(1→50) 10mL에 녹이고 그 중 5mL를 취하여 이에 액이 엷은 황색을 나타낼 때까지 요오드시액을 적가한 다음, 황산동용액(1→1,000) 1방울 및 피롤 1방울을 가하고 수욕 중에서 50～60℃로 5분간 가온하면 청～청록색을 나타낸다.

    (2) 이 품목의 수용액(1→100) 10mL에 과망간산칼륨시액 1mL를 가하면 시액의 색은 즉시 없어진다.

    (3) 이 품목은 확인시험법 중 나트륨염의 반응을 나타낸다.

• 정량법

    이 품목을 건조한 다음 약 1g을 정밀히 달아 메타인산용액(1→50)에 녹여 250mL로 하고 그 중 50mL를 취하여 0.1N 요오드용액으로 적정한다(지시약 : 전분시액).

  0.1N 요오드용액 1mL ＝ 10.81mg C₆H₇O₆Na•H₂O

• 화학적 성질

  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.

• 용도

  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 oxidizing agents, a property that makes it valuable as an antioxidant. during preparation, a minimal amount of air should be incorporated 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 ascorbate; 1.23 parts of sodium erythorbate are equivalent to 1 part erythorbic 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.

• 제조 방법

  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%.

• 일반 설명

  Almost odorless fluffy, white to off-white crystalline powder. Used as an antioxidant and preservative.

• 공기와 물의 반응

  Water soluble.

• 반응 프로필

  Sodium erythorbate may be sensitive to prolonged exposure to light. Incompatible with strong oxidizing agents .

• 화재위험

  Flash point data for Sodium erythorbate are not available; however, Sodium erythorbate is probably combustible.

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