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Sodium metabisulfite

CAS 7681-57-4Na2O5S2MW 189.90 g/mol

Sodium metabisulfite(CAS 7681-57-4):分子式 Na2O5S2、分子量 189.90 g/mol;类别 食品添加剂。

规格参数

CAS号7681-57-4
分子式Na2O5S2
分子量189.90 g/mol
类别Antioxidants|Basic Chemical Raw Materials

采购档案

这个产品是什么

Sodium metabisulfite 是一种食品级化合物,登记 CAS 号为 7681-57-4,分子式 Na2O5S2(分子量 189.90 g/mol),归属于食品添加剂大类化工原料。

识别信息

登记 CAS 号:7681-57-4

其分子式 Na2O5S2 由 2 个钠、5 个氧、2 个硫 组成。

别名/同义词:Sodium metabisulfite

所属分类:食品添加剂 / 精细化学品

常见问题

Sodium metabisulfite 的 CAS 号是多少?

Sodium metabisulfite 的 CAS 登记号为 7681-57-4。

Sodium metabisulfite 的分子式与分子量是多少?

分子式 Na2O5S2,分子量 189.90 g/mol。

Sodium metabisulfite 还有哪些别名?

别名/同义词:Sodium metabisulfite。

Sodium metabisulfite 属于哪个分类?

所属分类:Antioxidants / Basic Chemical Raw Materials。

PubChem 公开数据

Sodium metabisulfite(CAS 7681-57-4)的公开数据库记录,列此仅供独立核对。

危险化学品分类与危害说明

GHS notification summary0.4% (11 / 3060)
Reported hazard statementsH302, H318, H317, H334, H335, H402, H412, H320

H302: Harmful if swallowed [Warning Acute toxicity, oral]

H318: Causes serious eye damage [Danger Serious eye damage/eye irritation]

法规与备案状态

Regulatory & Food ContactFDA Substance added to food: ANTIMICROBIAL AGENT, ANTIOXIDANT, COLOR OR COLORING ADJUNCT, DOUGH STRENGTHENER,
ANTIOXIDANT; FLOUR_TREATMENT_AGENT; PRESERVATIVE: Food Additives
ANTIMICROBIAL AGENT, ANTIOXIDANT, COLOR OR COLORING ADJUNCT, DOUGH STRENGTHENER, FLOUR TREATING AGENT, FREEZIN
JECFA ADI: 0-0.7 mg/kg bw
TRS 891-JECFA 51/30
FAS 42-JECFA 51/95
GHS notification summary0.4% (11 / 3060)

物理形态与操作说明

  • Sodium metabisulfite appears as a white crystalline or powder solid with a slight sulfur odor. Toxic by inhalation. Strongly irritates skin and tissue. Noncombustible, but may decompose to emit toxic oxide fumes of sulfur and sodium when heated to high temperature. A corrosive acid when mixed with water. Used as a food preservative and as a laboratory reagent.
  • Dry Powder; Other Solid; Wet Solid; Large Crystals; CBI; Liquid
  • White crystals or crystalline powder
  • White to yellowish crystals or powder with an odor of sulfur dioxide; [NIOSH]
  • WHITE POWDER WITH CHARACTERISTIC ODOUR.
  • White to yellowish crystals or powder with a slight odor of sulfur.

公开数据库收录的理化数据

溶解度54 % (NIOSH, 2024)
溶解度66.7 g/100 g water at 25 °C
溶解度54%
密度2.36 g/cm³
密度1.4
密度1.4 @25 °C
LogP-3.7
Decomposition150 °C
pH4,0-5,5 (10 % aqueous solution)

这个物质在各数据库里的编号

CAS Registry Number7681-57-4
PubChem CID656671
分子式Na2S2O5
UNII(FDA)4VON5FNS3C

数据库记载的用途

  • CIR ingredient: Sodium Metabisulfite
  • Sodium and potassium metabisulfite are used as antioxidants in photographic film development. [Kanerva, p. 1637] Used as an antioxidant (food preservative, pharmaceutical aid, silage preservative; [HSDB] Used in the pickling stage of leather production; [PMID 21938525]
  • Leather Tanning and Processing [Category: Industry]
  • Photographic Processing [Category: Other]
  • Sodium Metabisulfite functions as reducing agents in cosmetic formulations. ... Sodium Bisulfite, and Sodium Metabisulfite /also/ function as antioxidants.
  • In foods, as preservative; lab reagent

它在各数据库里的别名

Sodium metabisulfite; 7681-57-4; Sodium pyrosulfite; Sodium disulfite; Disodium pyrosulfite; Natrii disulfis; Campden Tablets; Disodium metabisulfite; Natrium pyrosulfit; Natriummetabisulfit; sodium pyrosulphite; Sodium bisulfite anhydrous; Natrium metabisulfurosum; Sodium pyrosulfite (Na2S2O5); Disodium pentaoxodisulfate; 4VON5FNS3C

计算机算出的分子描述符

分子量190.11
氢键供体数0
氢键受体数6
可旋转键数0
精确质量189.89825401
单同位素质量189.89825401
拓扑极性表面积125
重原子数9
形式电荷0
复杂度136

数据库摘要

Sodium Metabisulphite Food Grade · CAS 7681-57-4 · Na2S2O5. UNII 4VON5FNS3C. 溶解度: 54 % (NIOSH, 2024); 溶解度: 66.7 g/100 g water at 25 °C; 溶解度: 54%.

数据来源:PubChem / Wikidata;与随货 COA 不一致时以 COA 为准。

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