无水亚硫酸钠

无水亚硫酸钠用途

【用途一】
用于碲和铌的微量分析测定和显影液的配制，还用作还原剂
【用途二】
用于人造纤维稳定剂、织物漂白剂、照相显影剂、染漂脱氧剂、香料和染料还原剂、造纸木质素脱除剂等
【用途三】
用作普通分析试剂和光敏电阻材料
【用途四】
还原性漂白剂，对食品有漂白作用和对植物性食品内的氧化酶有强烈的抑制作用。我国规定可用于蜜饯，最大使用量为2.0g/kg；也可用于葡萄糖、液体葡萄糖、食糖、冰糖、饴糖、糖果、竹笋、蘑菇和蘑菇罐头、葡萄、黑加仑浓缩汁，最大使用量0.60g/kg。竹笋、蘑菇及蘑菇罐头、蜜饯、葡萄和黑加仑浓缩汁的残留量(以SO2计)≤0.05g/kg；薯类淀粉残留量≤0.03g/kg；饼干、食糖、粉丝及其他品种的残留量小于0.1g/kg；液体葡萄糖的残留量不得超过0.2g/kg。
【用途五】
印染工业作为脱氧剂和漂白剂，用于各种棉织物的煮炼，可防止棉布纤维局部氧化而影响纤维强度，并提高煮炼物的白度。感光工业用作显影剂。有机工业用作间苯二胺、2，5-二氯吡唑酮、蒽醌-1-磺酸、1-氨基蒽醌、氨基水杨酸钠等生产的还原剂，可防止反应过程中半成品的氧化。造纸工业用作木质素脱除剂。纺织工业用作人造纤维的稳定剂。电子工业用于制造光敏电阻。水处理工业用于电镀废水、饮用水的处理。
【用途六】
食品工业用作漂白剂、防腐剂、疏松剂、抗氧化剂。也用于医药合成。生产脱水蔬菜时用作还原剂。
【用途七】
用于制亚硫酸纤维素酯、硫代硫酸钠、有机化学药品、漂白织物等, 还用作还原剂、防腐剂、去氯剂等。

点击显示

无水亚硫酸钠名称

[ CAS 号 ]:
7757-83-7

[ 中文名 ]:
亚硫酸钠

[ 英文名 ]:
Sodium sulfite

[中文别名 ]:

[英文别名 ]:

anhydrous sodium sulphite
Natrii sulphis
Sodium sulphite
Sodium sulfite anhydrous
disodium,sulfite
Sulftech
SODIUM SULFITE
Sulfurous acid,disodium salt
Sodium sulfite solution
Disodium sulfite

无水亚硫酸钠物理化学性质

[ 密度 ]:
2.63

[ 熔点 ]:
500 °C

[ 分子式 ]:
Na₂SO₃

[ 分子量 ]:
126.043

[ 精确质量 ]:
125.936356

[ PSA ]:
82.40000

[ 外观性状 ]:
白色晶体或粉末

[ 折射率 ]:
1.484

[ 储存条件 ]:
库房低温,通风,干燥

[ 稳定性 ]:
Stable. Incompatible with strong acids. Moisture and air sensitive.

[ 水溶解性 ]:
23 g/100 mL (20 ºC)

无水亚硫酸钠MSDS

详细MSDS(安全技术说明书)

无水亚硫酸钠毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: WE2150000

CAS REGISTRY NUMBER :: 7757-83-7

LAST UPDATED :: 199710

DATA ITEMS CITED :: 27

MOLECULAR FORMULA :: O3-S.2Na

MOLECULAR WEIGHT :: 126.04

WISWESSER LINE NOTATION :: NA2 S-O3

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 820 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 950 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 175 mg/kg

TOXIC EFFECTS :: Behavioral - convulsions or effect on seizure threshold Lungs, Thorax, or Respiration - respiratory depression Lungs, Thorax, or Respiration - other changes

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Mammal - dog

DOSE/DURATION :: 1300 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Mammal - cat

DOSE/DURATION :: 1300 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Mammal - cat

DOSE/DURATION :: 400 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 2825 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 600 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - guinea pig

DOSE/DURATION :: 600 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - guinea pig

DOSE/DURATION :: 200 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

MUTATION DATA

TYPE OF TEST :: Sperm Morphology

TEST SYSTEM :: Mammal - cattle Cells - not otherwise specified

DOSE/DURATION :: 250 mg/L

REFERENCE :: ENVRAL Environmental Research. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1967- Volume(issue)/page/year: 9,84,1975 *** REVIEWS *** IARC Cancer Review:Human Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 54,131,1992 IARC Cancer Review:Animal Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 54,131,1992 IARC Cancer Review:Group 3 IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 54,131,1992 *** U.S. STANDARDS AND REGULATIONS *** EPA FIFRA 1988 PESTICIDE SUBJECT TO REGISTRATION OR RE-REGISTRATION FEREAC Federal Register. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) V.1- 1936- Volume(issue)/page/year: 54,7740,1989 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X5886 No. of Facilities: 31580 (estimated) No. of Industries: 177 No. of Occupations: 116 No. of Employees: 309663 (estimated) No. of Female Employees: 122038 (estimated)

点击显示

无水亚硫酸钠安全信息

[ 补充危害声明 ]:
Contact with acids liberates toxic gas.

[ 个人防护装备 ]:
Gloves

[ 危害码 (欧洲) ]:
Xn:Harmful

[ 风险声明 (欧洲) ]:
R22;R36/37/38

[ 安全声明 (欧洲) ]:
S24/25

[ 危险品运输编码 ]:
NONH for all modes of transport

[ WGK德国 ]:
1

[ RTECS号 ]:
WE2150000

[ 海关编码 ]:
2832100000

无水亚硫酸钠合成路线

详细合成路线

无水亚硫酸钠上下游产品

无水亚硫酸钠上游产品

无水亚硫酸钠下游产品

无水亚硫酸钠制备

（1）纯碱液吸收法将硫黄燃烧得到的含二氧化硫气从吸收塔底部通入，与纯碱溶液进行逆流吸收，生成亚硫酸氢钠溶液送至中和槽，缓慢加入纯碱溶液进行中和反应至微酸性。然后加入烧碱溶液，使溶液Ph值达11～12，经脱色、过滤、澄清液经蒸发结晶、离心脱水、250～300℃下气流于燥，制得无水亚硫酸钠成品。其反应方程式如下：

（2）由硫磺燃烧产生的含S0z的气体通入吸收塔与相对密度1.21(25°Bè)的纯碱溶液逆流吸收，生成的亚硫酸氢钠溶液Ph值达5～6，在中和槽中用相对密度1.21的纯碱溶液中和至微酸性，然后加热至102℃以上；再加入相对密度1.19的烧碱溶液中和至Ph值11～12，除去铁，同时得到亚硫酸钠溶液；中和液经真空(26．7kPa)蒸发浓缩、结晶分离，250～300℃气流干燥脱去结晶水即得产品。反应方程式如下：

（3）将七水亚硫酸钠加热到50℃左右时，结晶即溶解在结晶水中，并有无水物的晶体析出。将无水物的结晶趁热过滤出来，在100～110℃下干燥。过滤和干燥过程应避免与空气接触，可在氮气或氢气的保护下进行。

4.采用吸收法。以食品级纯碱溶液吸收二氧化硫，使其饱和后再加入精制氢氧化钠溶液，经晶析制得结晶亚硫酸钠，再经加热脱水，制得食用无水亚硫酸钠。

5. 加热搅拌下用200kg蒸馏水溶解50kg工业亚硫酸钠，完全溶解后，滤去不溶性杂质。添加少量氢氧化钠溶液，沉淀出镁、钙等金属，过滤后，加热蒸发使细小亚硫酸钠结晶不断析出，及时取出沥干，离心甩干（潮湿易氧化）。将甩干的结晶，于200℃左右烘干即可。

点击显示

无水亚硫酸钠海关

[ 海关编码 ]: 2832100000

无水亚硫酸钠文献

Comparison of a novel TiO₂/diatomite composite and pure TiO₂ for the purification of phosvitin phosphopeptides.

J. Chromatogr. B. Analyt. Technol. Biomed. Life Sci. 960 , 52-8, (2014)

A novel TiO2/diatomite composite (TD) was prepared and then characterized by scanning electron microscope (SEM) and Fourier Transform Infrared (FTIR). The results of SEM showed that after modification...

Transformation with TT8 and HB12 RNAi Constructs in Model Forage (Medicago sativa, Alfalfa) Affects Carbohydrate Structure and Metabolic Characteristics in Ruminant Livestock Systems.

J. Agric. Food Chem. 63 , 9590-600, (2015)

Lignin, a phenylpropanoid polymer present in secondary cell walls, has a negative impact on feed digestibility. TT8 and HB12 genes were shown to have low expression levels in low-lignin tissues of alf...

Fluorescent carbon nanodots for sensitive and selective detection of tannic acid in wines.

Talanta 132 , 252-7, (2014)

Herein we describe an easy one step synthesis of carbon nanodots (C-dots) by thermal carbonization of 6-bromohexylboronic acid using two different amine compounds, polyethyleneglycol bis(3-aminopropyl...

更多文献

无水亚硫酸钠

无水亚硫酸钠用途

无水亚硫酸钠名称

无水亚硫酸钠物理化学性质

无水亚硫酸钠MSDS

详细MSDS(安全技术说明书)

无水亚硫酸钠毒性和生态

CHEMICAL IDENTIFICATION

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

MUTATION DATA

无水亚硫酸钠安全信息

无水亚硫酸钠合成路线

详细合成路线

无水亚硫酸钠上下游产品

无水亚硫酸钠上游产品

无水亚硫酸钠下游产品

无水亚硫酸钠制备

无水亚硫酸钠海关

无水亚硫酸钠文献

相关化工产品/化学物质：

推荐生产厂家/供应商：

相关化合物