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CAS: 16731-55-8
分子式: H2O5S2·2K
分子量: 222.31
熔点: 190℃
中文名称: 
二亚硫酸钾
偏亚硫酸氢钾
焦亚硫酸钾
偏重亚硫酸钾
英文名称: 
potassium metabisulphate
potassiummetabisulfite
Disulfurous acid, dipotassium salt
Potassium metabisulphite
potassium pyrosulfite
dipotassium disulfite
dipotassium metabisulfite
dipotassium pyrosulfite
potassium disulfite
potassium metabisulfite
pyrosulfurous acid, dipotassium salt
Disulfurous acid,dipotassium salt
展开更多英文名
推荐供应商
货号品牌产品名称规格包装、参考价格
P816195MACKLIN焦亚硫酸钾试剂级, 95.0%78元/500g;   268元/2.5kg;   977元/10kg;   906元/12X500g;   咨询
储存：室温
状态：白色结晶
P2480TCIPotassium Disulfite>97.0%(T)245元/25G;   980元/500G;   咨询

基本信息

纯度/分析方法>97.0%(T)
分子式/分子量K2S2O5 = 222.31
外观与形状(20℃)固体
Reaxys-RN14412766
PubChem物质ID354334090
Merck Index (14)7645
MDL编号MFCD00167605

技术规格

AppearanceWhite to Almost white powder to crystal
Puritymin. 97.0 %

物性(参考值)

熔点190 ℃(dec.)
最大吸收波长267(H2O) nm

安全信息

图形或危害标志
信号词危险
危险性说明H318 : 造成严重眼损伤。
防范说明P280 : 戴防护眼罩/戴防护面具。
P305 + P351 + P338 + P310 : 如进入眼睛：用水小心冲洗几分钟。如戴隐形眼镜并可方便地取出，取出隐形眼镜。继续冲洗。立即呼叫急救中心/医生。

相关法规

RTECS#TT4920000
043908Alfa AesarPotassium Metabisulfite95+%452元/100g;   1558元/500g;   5725元/2kg;   咨询

应用
It serves as a component of certain photographic developers and its solution is used in photographic fixing, in the textile industry for dyeing and cotton printing. It is utilized to precipitate gold from solution in aqua regia.

备注
Air sensitive. Incompatible with oxidizing agents, acids, sodium nitrate and sodium nitrite.

基本信息

MDL
MFCD00167605

EINECS
240-795-3

分子式
K2S2O5

分子量
222.32

熔点
190° dec.

灵敏度
Air Sensitive. Store under Nitrogen. Ambient temperatures.

形态
Powder

溶解性
Soluble in water. Insoluble in ethanol.

Merck
14,7645

GHS危害和防范说明

GHS符号

Hazard Statements
H315-H319-H335
Causes skin irritation.Causes serious eye irritation.May cause respiratory irritation.

Precautionary Statements
P261-P280a-P305+P351+P338-P304+P340-P405-P501a
Avoid breathing dust/fume/gas/mist/vapours/spray.Wear protective gloves and eye/face protection.IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing.Store locked up.Dispose of contents/container in accordance with local/regional/national/international regulations.

安全信息

危险类别
31-41
Contact with acids liberates toxic gas.Risk of serious damage to eyes.

安全等级
26-39-60
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear eye/face protection.This material and its container must be disposed of as hazardous waste

TSCA
是

C41827Alfa AesarPotassium Metabisulfite97%, extra pure693元/25g;   919元/500g;   2555元/2.5kg;   咨询

基本信息

Ref#
41827

MDL
167605

分子式
K2 O5 S2

分子量
222.33

形态
Granular

P269-212Alfa AesarPOT METABISUFIT NF/FCC 2.5KG2503元/2.5kg;   咨询

基本信息

Ref#
F53900

P197-500Alfa AesarPOTASSIUM M BISULFITE CRT 500G586元/500g;   咨询

基本信息

Ref#
F53753

P269-500Alfa AesarPOT METABISUFITE NF 500GM704元/500g;   咨询

基本信息

Ref#
F53810

1.05057SupelcoPotassium Disulfitefor analysis EMSURE®599.95元/500 G;   924.07元/1 KG;   1839.7元/2.5 KG;   咨询

产品说明

分析说明

Assay (iodometric): ≥ 96 %
In water insoluble matter: ≤ 0.005 %
Chloride (Cl): ≤ 0.005 %
As (Arsenic): ≤ 0.0001 %
Cu (Copper): ≤ 0.001 %
Fe (Iron): ≤ 0.0005 %
Pb (Lead): ≤ 0.001 %
Zn (Zinc): ≤ 0.001 %

法律信息

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

基本信息

经验(实验)分子式K2O5S2
分子量222.32
MDL编号MFCD00167605
EC索引号240-795-3

产品性质

质量水平300
测定≥96% (iodometric)
形式solid
效能2300 mg/kg LD50, oral (Rat)
pH值(酸碱度)3.0-4.5 (20 ℃, 50 g/L in H2O)
mp150 ℃ (decomposition)
溶解性 450 g/L
堆积密度1000‑1300 kg/m3
痕量阴离子chloride (Cl-): ≤0.005%
痕量阳离子As: ≤ 0.0001%
Cu: ≤ 0.001%
Fe: ≤ 0.0005%
Pb: ≤ 0.001%
Zn: ≤ 0.001%
储存温度2-30℃
InChI1S/2K.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2
InChI keyRWPGFSMJFRPDDP-UHFFFAOYSA-L

安全信息

象形图GHS05GHS07
警示用语：Danger
危险声明H318 - H335
预防措施声明P261 - P271 - P280 - P304 + P340 + P312 - P305 + P351 + P338 - P403 + P233
危险分类Eye Dam. 1 - STOT SE 3
靶器官Respiratory system
补充剂危害EUH031
储存分类代码13 - Non Combustible Solids
WGKWGK 1
12619Sigma-AldrichPotassium Disulfitepuriss., meets analytical specification of Ph.Eur., BP, NF, FCC, E224, 95.0-101.0% (iodometric), powder, 51.8-57.6% sulfur dioxide529.65元/1 KG;   咨询

基本信息

线性分子式K2S2O5
分子量222.32
EC 号240-795-3
MDL编号MFCD00167605
PubChem化学物质编号329749774
NACRESNA.21

产品性质

等级puriss.
质量水平100
测定95.0-101.0% (iodometric)
形式powder
质量meets analytical specification of Ph.Eur., BP, NF, FCC, E224
杂质 organic volatile impurities, complies (GC)
residual solvents, in accordance
≤0.001% heavy metals (as Pb)
≤0.08% thiosulfate (S2O3)
51.8-57.6% sulfur dioxide
pH值(酸碱度)3.5-4.5 (20 ℃, 5%)
痕量阴离子chloride (Cl-): ≤100 mg/kg
痕量阳离子As: ≤2 mg/kg
Cu: ≤20 mg/kg
Fe: ≤10 mg/kg
Hg: ≤1 mg/kg
Pb: ≤2 mg/kg
Se: ≤5 mg/kg
Zn: ≤20 mg/kg
适用性in accordance for appearance of solution
SMILES string[K+].[K+].[O-]S(=O)S([O-])(=O)=O
InChI1S/2K.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2
InChI keyRWPGFSMJFRPDDP-UHFFFAOYSA-L

安全信息

象形图GHS05GHS07
警示用语：Danger
危险声明H318 - H335
预防措施声明P280 - P305 + P351 + P338 + P310
危险分类Eye Dam. 1 - STOT SE 3
靶器官Respiratory system
补充剂危害EUH031
储存分类代码11 - Combustible Solids
WGKWGK 1
60508Sigma-AldrichPotassium DisulfiteBioUltra, ≥97.0% (RT)373.62元/250 G;   咨询

产品说明

应用

Potassium disulfite (Potassium metabisulfite) may be use to study is antioxidant effects and ability to preserve food. Potassium disulfite may be used as an inhibitor of yeasts, bacteria, and fungi growth. Potassium metabisulfite may be used to study its potential toxicities in vivo.

基本信息

线性分子式K2S2O5
分子量222.32
EC 号240-795-3
MDL编号MFCD00167605
PubChem化学物质编号57651772
NACRESNA.25

产品性质

产品线BioUltra
质量水平100
测定≥97.0% (RT)
杂质 insoluble matter, passes filter test
pH值(酸碱度)2.5-4.5 (25 ℃, 0.1 M in H2O)
溶解性H2O: 0.1 M at 20 ℃, clear, colorless
痕量阴离子chloride (Cl-): ≤50 mg/kg
痕量阳离子Al: ≤5 mg/kg
As: ≤0.1 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
Li: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
Na: ≤1000 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg
吸光度cut-off at 308 nm in H2O at 0.1 M
SMILES string[K+].[K+].[O-]S(=O)S([O-])(=O)=O
InChI1S/2K.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2
InChI keyRWPGFSMJFRPDDP-UHFFFAOYSA-L

安全信息

象形图GHS05GHS07
警示用语：Danger
危险声明H318 - H335
预防措施声明P280 - P305 + P351 + P338 + P310
危险分类Eye Dam. 1 - STOT SE 3
靶器官Respiratory system
补充剂危害EUH031
储存分类代码11 - Combustible Solids
WGKWGK 1
个人防护装备dust mask type N95 (US), Eyeshields, Gloves
55777SupelcoPotassium Disulfiteanalytical standard816.48元/1 G;   咨询

产品说明

一般描述

Potassium disulfite (Potassium metabisulfite, PMB) is an inorganic salt with antimicrobial properties. It is a sulfiting agent that prevents browning of foods.

应用

Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

基本信息

线性分子式K2S2O5
分子量222.32
EC 号240-795-3
MDL编号MFCD00167605
PubChem化学物质编号329758155
NACRESNA.24

产品性质

等级analytical standard
质量水平100
测定≥98% (RT)
保质期limited shelf life, expiry date on the label
technique(s)HPLC: suitable
gas chromatography (GC): suitable
溶解性H2O: 200 mg/mL, clear to very slightly hazy, colorless
application(s)cleaning products
cosmetics
food and beverages
personal care
格式neat
SMILES string[K+].[K+].[O-]S(=O)S([O-])(=O)=O
InChI1S/2K.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2
InChI keyRWPGFSMJFRPDDP-UHFFFAOYSA-L

安全信息

象形图GHS05GHS07
警示用语：Danger
危险声明H318 - H335
预防措施声明P261 - P271 - P280 - P304 + P340 + P312 - P305 + P351 + P338 - P403 + P233
危险分类Eye Dam. 1 - STOT SE 3
靶器官Respiratory system
补充剂危害EUH031
储存分类代码11 - Combustible Solids
WGKWGK 1
P2522Sigma-AldrichPotassium Disulfite≥98%1189.17元/500 G;   咨询

产品说明

一般描述

焦亚硫酸钾(偏亚硫酸氢钾，PMB)是一种具有抗菌作用的无机盐。 它是一种硫化剂，可以防止食物褐变。 已经评估了其遗传毒性和细胞毒性作用。 PMB经过水解，可形成焦亚硫酸钾。

应用

焦亚硫酸钾已用于聚二甲基硅氧烷(PDMS)聚合物表面的改性方案中。
它可用于以下过程：

  • β-相(β-PVDF)照射薄膜中聚(偏二氟乙烯)的化学蚀刻。
  • 2-碘嘧啶衍生物合成过程中的脱色。
  • 钯催化的芳基卤化物的氨基磺酰化反应。

包装

500 g in poly bottle

基本信息

线性分子式K2S2O5
分子量222.32
EC 号240-795-3
MDL编号MFCD00167605
PubChem化学物质编号329820140
NACRESNA.55

产品性质

质量水平200
测定≥98%
形式powder
SMILES string[K+].[K+].[O-]S(=O)S([O-])(=O)=O
InChI1S/2K.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2
InChI keyRWPGFSMJFRPDDP-UHFFFAOYSA-L

安全信息

象形图GHS05GHS07
警示用语：Danger
危险声明H318 - H335
预防措施声明P280 - P305 + P351 + P338 + P310
危险分类Eye Dam. 1 - STOT SE 3
靶器官Respiratory system
补充剂危害EUH031
储存分类代码11 - Combustible Solids
WGKWGK 1
BIOC-047N-1GAccuStandardDipotassium disulfite232元/1g;   咨询
Dipotassium disulfite焦亚硫酸钾16731-55-8
095812FluorochemPotassium Disulfite95%242元/25g;   374元/100g;   咨询

基本信息

CAS Number16731-55-8
MDL NumberMFCD00167605

安全信息

图形或危害标志
危险性说明 EUH031: Contact with acids liberates toxic gas.
H315: Causes skin irritation.
H318: Causes serious eye damage.
H335: May cause respiratory irritation.
防范说明 P233: Keep container tightly closed.
P260: Do not breathe .
P261: Avoid breathing .
P264: Wash hands thoroughly after handling.
P271: Use only outdoors or in a well-ventilated area.
P280: Wear .
P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
P304: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing..
P304 + P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P310: Immediately call a POISON CENTER or doctor/physician.
P312: Call a POISON CENTER or doctor/physician if you feel unwell.
P321: Specific treatment (see relevant procedures. on this label).
P332 + P313: If skin irritation occurs: Get medical advice/ attention.
P340: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P362: Take off contaminated clothing and wash before reuse.
P403: Store in a well-ventilated place.
P403 + P233: Store in a well-ventilated place. Keep container tightly closed.
P405: Store locked up.
P501: Dispose of contents/container to in accordance with local regulation .
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