disodium sulfinatosulfonate

• ChemBase编号: 129535
• 分子式: Na2O5S2
• 平均质量: 190.10654
• 单一同位素质量: 189.89825366
• SMILES: [O-]S(=O)S(=O)(=O)[O-].[Na+].[Na+]
• Canonical SMILES: [O-]S(=O)S(=O)(=O)[O-].[Na+].[Na+]
• InChI: InChI=1S/2Na.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2
• InChIKey: HRZFUMHJMZEROT-UHFFFAOYSA-L

名称和登记号

名称

• IUPAC标准名: disodium sulfinatosulfonate
• IUPAC传统名: disodium metabisulfite
• 别名: 一缩二亚硫酸钠; 58.5% min; 偏二亚硫酸钠; 焦亚磷酸钠; 偏重亚硫酸钠; 偏亚硫酸氢钠, ACS; Sodium pyrosulfite; Sodium disulfite; Sodium metabisulfite; Natrii metabisulfis; Sodium sulfite; Sodium metabisulfite, SO; Sodium metabisulfite; Sodium metabisulfite, ACS

登记号

• CAS号: 7681-57-4
• EC号: 231-673-0
• MDL号: MFCD00167602
• 默克索引号: 148638
• PubChem SID: 24855463; 24899821; 24848168; 24858961; 162223827; 24849936
• PubChem CID: 656671
• 维基百科标题: Sodium_metabisulfite

理论计算性质

• Acid pKa: -2.7217357
• 质子受体: 5
• 质子供体: 0
• LogD (pH = 5.5): -6.1587806
• LogD (pH = 7.4): -6.185216
• Log P: -1.5739199
• 摩尔折射率: 18.7261 cm^3
• 极化性: 9.72111 Å^3
• 极化表面积: 97.33 Å^2
• 可自由旋转的化学键: 1
• 里宾斯基五规则: true

分子性质

理化性质

• 溶解度: 54 g/100 mL (20 °C) ; 81.7 g/100 mL (100 °C) in water; Freely soluble in water, glycerol. Slightly soluble in alcohol; very soluble in glycerol ; soluble in ethanol
• 外观: Crystalline powder; Granular; white to yellow powder
• 熔点: >170 °C (begins at 150 °C); >300 °C(lit.); >300°C
• 密度: 1.48 g/cm^3; 1.480
• 气味: faint SO₂
• pH值: 3.5-5.0 (20 °C, 5%)

安全信息

• RTECS编号: UX8225000
• 欧盟危险性物质标志: Harmful (Xn); Irritant (Xi); X; 有害性(Harmful) (Xn)
• 德国WGK号: 1
• 危险公开号: 22-31-41; R22 R31 R41
• 安全公开号: 26-39-46; S2 S26 S39 S46
• TSCA收录: 是
• 欧盟危险品索引: 016-063-00-2
• GHS危险品标识: GHS05; GHS07
• GHS警示词: Danger
• NFPA704:
  

  0

  2

  1
• GHS危险声明: H302-H318; H318-H302
• GHS警示性声明: P280-P264-P305+P351+P338-P310-P301+P312-P501A; P280-P305 + P351 + P338
• 个人保护装置: dust mask type N95 (US), Eyeshields, Gloves
• 欧盟补充危害声明: Contact with acids liberates toxic gas.

产品相关信息

• 纯度: ≥95% (RT); ≥95.0%; ≥97.0%; ≥99%; 65.0-67.4% SO2 basis; 97%; 97% min; 97-100.5%; 98-100.5%
• 级别: ACS reagent; ACS reagent, reag. Ph. Eur.; JIS first grade; Ph Eur; puriss.; puriss. p.a.; purum p.a.; reagent grade; SAJ special grade
• 适用性: complies for appearance of solution
• 杂质: ≤0.005% insolubles; ≤0.01% thiosulfate (S2O3); ≤0.02% thiosulfate (S2O3); residue of solvents, complies
• 痕量阳离子: As: ≤0.5 mg/kg; As: ≤2 mg/kg; Ca: ≤50 mg/kg; Cd: ≤50 mg/kg; Co: ≤50 mg/kg; Cu: ≤10 mg/kg; Cu: ≤5 mg/kg; Cu: ≤50 mg/kg; Fe: ≤0.002%; Fe: ≤10 mg/kg; Fe: ≤5 mg/kg; Fe: ≤50 mg/kg; heavy metals (as Pb): ≤0.001%; Hg: ≤1 mg/kg; K: ≤100 mg/kg; K: ≤200 mg/kg; Ni: ≤50 mg/kg; Pb: ≤2 mg/kg; Pb: ≤5 mg/kg; Pb: ≤50 mg/kg; Se: ≤5 mg/kg; Zn: ≤10 mg/kg; Zn: ≤50 mg/kg
• 痕量阴离子: chloride (Cl-): ≤0.05%; chloride (Cl-): ≤100 mg/kg; chloride (Cl-): ≤50 mg/kg; thiosulfate (S2O32-): ≤0.05%
• 品质说明: dry; meets analytical specification of Ph. Eur., BP, NF, FCC, E223
• 药典: testing & handling conforms to Pharmacopeia
• 线性分子式: Na2S2O5

详细说明

Sigma Aldrich - 255556

包装
100, 500 g in poly bottle
2.5 kg in poly bottle

Sigma Aldrich - S9000

Other Notes
固体时，本品为焦亚硫酸钠 (Na2S2O5)。溶于水时，得到 NaHSO3。
包装
1 kg in poly bottle
5 kg in poly drum
500 g in poly bottle
法律信息
ReagentPlus 注册商标 Sigma-Aldrich Co. LLC

Sigma Aldrich - 161519

包装
2.5 kg in poly bottle
500 g in poly bottle