焦亚硫酸钠
焦亚硫酸钠用途
焦亚硫酸钠名称
[ CAS 号 ]:
7681-57-4
[ 中文名 ]:
焦亚硫酸钠
[ 英文名 ]:
Sodium metabisulfite
[中文别名 ]:
[英文别名 ]:
- Fertisilo
- MFCD00213787
- EINECS 231-673-0
- Disodium disulfite
- Campden Tablets
- Natrii disulfis
- Natrium pyrosulfit
- Sodium disulfite
- Sodium pyrosulfite
- Natriumbisulfit
焦亚硫酸钠生物活性
[ 描述 ]:
[ 相关类别 ]:
[参考文献]
焦亚硫酸钠物理化学性质
[ 密度 ]:
1.48
[ 熔点 ]:
150 °C
[ 分子式 ]:
Na2O5S2
[ 分子量 ]:
190.11
[ 精确质量 ]:
189.898254
[ PSA ]:
124.92000
[ LogP ]:
0.27220
[ 外观性状 ]:
白色结晶粉末
[ 储存条件 ]:
库房低温,通风,干燥
[ 稳定性 ]:
Stable. Incompatible with strong oxidizing agents, strong acids. Contact with strong acids releases a poisonous gas. May be moisture and air sensitive.
[ 水溶解性 ]:
540 g/L (20 ºC)
焦亚硫酸钠MSDS
焦亚硫酸钠毒性和生态
CHEMICAL IDENTIFICATION
- RTECS NUMBER :
- UX8225000
- CHEMICAL NAME :
- Pyrosulfurous acid, disodium salt
- CAS REGISTRY NUMBER :
- 7681-57-4
- LAST UPDATED :
- 199712
- DATA ITEMS CITED :
- 30
- MOLECULAR FORMULA :
- O5-S2.2Na
- MOLECULAR WEIGHT :
- 190.10
- WISWESSER LINE NOTATION :
- NA2 S2-O3-Q2
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Intravenous
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 115 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 :
- Parenteral
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- 910 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 - rabbit
- DOSE/DURATION :
- 192 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 75 mg/kg/15D-C
- TOXIC EFFECTS :
- Kidney, Ureter, Bladder - other changes Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - phosphatases Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - dehydrogenases
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Mammal - pig
- DOSE/DURATION :
- 562 gm/kg/48W-C
- TOXIC EFFECTS :
- Liver - changes in liver weight Kidney, Ureter, Bladder - changes in bladder weight Nutritional and Gross Metabolic - weight loss or decreased weight gain
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Oral
- DOSE :
- 20 gm/kg
- SEX/DURATION :
- multigenerations
- TOXIC EFFECTS :
- Reproductive - Effects on Newborn - stillbirth
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Oral
- DOSE :
- 40 gm/kg
- SEX/DURATION :
- multigenerations
- TOXIC EFFECTS :
- Reproductive - Effects on Newborn - weaning or lactation index (e.g., # alive at weaning per # alive at day 4)
MUTATION DATA
- TYPE OF TEST :
- Sister chromatid exchange
- TEST SYSTEM :
- Rodent - hamster Ovary
- REFERENCE :
- ENMUDM Environmental Mutagenesis. (New York, NY) V.1-9, 1979-87. For publisher information, see EMMUEG. Volume(issue)/page/year: 7,1,1985 *** REVIEWS *** ACGIH TLV-Not classifiable as a human carcinogen DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 ACGIH TLV-TWA 5 mg/m3 DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 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 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-AUSTRALIA:TWA 5 mg/m3 JAN 1993 OEL-BELGIUM:TWA 5 mg/m3 JAN 1993 OEL-DENMARK:TWA 5 mg/m3 JAN 1993 OEL-FRANCE:TWA 5 mg/m3 JAN 1993 OEL-THE NETHERLANDS:TWA 5 mg/m3 JAN 1993 OEL-SWITZERLAND:TWA 5 mg/m3 JAN 1993 OEL-UNITED KINGDOM:TWA 5 mg/m3 JAN 1993 OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO SODIUM METABISULFITE-air:10H TWA 5 mg/m3 REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992 NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X4004 No. of Facilities: 8367 (estimated) No. of Industries: 73 No. of Occupations: 68 No. of Employees: 88236 (estimated) No. of Female Employees: 28696 (estimated)
焦亚硫酸钠安全信息
[ 符号 ]:
GHS05, GHS07
[ 信号词 ]:
Danger
[ 危害声明 ]:
H302-H318
[ 补充危害声明 ]:
Contact with acids liberates toxic gas.
[ 警示性声明 ]:
P280-P301 + P312 + P330-P305 + P351 + P338 + P310
[ 个人防护装备 ]:
dust mask type N95 (US);Eyeshields;Gloves
[ 危害码 (欧洲) ]:
Xn:Harmful
[ 风险声明 (欧洲) ]:
R22;R31;R41
[ 安全声明 (欧洲) ]:
S26-S39-S46
[ 危险品运输编码 ]:
3260
[ WGK德国 ]:
1
[ RTECS号 ]:
UX8225000
[ 包装等级 ]:
III
[ 海关编码 ]:
2832100000
焦亚硫酸钠制备
1.将碎硫磺送入燃烧炉,并通人为理论量2倍左右的压缩空气,在600~800℃下自燃。经冷却除尘和水洗后送入多级反应器,与碳酸钠溶液进行逆向吸收;吸收液温度控制在45℃左右,多级反应流出的晶浆经离心分离,160℃以下干燥即为成品。反应方程式如下:
2.在亚硫酸氢钠溶液中加入一定量的纯碱,生成亚硫酸钠的悬浮液。通入二氧化硫,生成焦亚硫酸钠结晶,经离心分离,干燥制得。或者用碳酸钠溶液吸收二氧化硫气生成亚硫酸氢钠溶液,当反应终点时,从亚硫酸氢钠饱和液中析出,经离心脱水,干燥制得。
3.在普通玻璃干燥塔的下部装上玻璃棉,然后装满NaHCO3与碎玻璃片的混合物,在负压下从塔的下部通入SO2气体,直到不再有二氧化碳逸出为止。反应中生成的水集中于塔的底部,所得的盐实际上是干的。筛出碎玻璃片,放入密闭瓶中。然后将此无水盐在大瓷坩埚中于500~600℃下灼烧2~3h,灼烧进行到制剂样品的水溶液与AgNO3反应生成的沉淀为纯白色(不是淡黄色)为止。
4.在保持温度为30℃左右的条件下,向30%的碳酸钠溶液中通入SO2气体,直到有强烈的SO2气味为止。将此溶液放入以浓硫酸作干燥剂的干燥器中,保持温度在25℃以上,静置至结晶析出。抽滤并用乙醇洗涤结晶,并在氮气或氢气流中干燥,隔绝空气保存。
5.采用吸收法。以食品级纯碱溶液吸收二氧化硫生成焦硫酸钠,经精制除杂、过滤、干燥,制得食用级焦亚硫酸钠。其反应式如下。
6.将洗净的二氧化硫气体通入含量约为15%的碳酸氢钠溶液中进行反应,直至二氧化碳气体不再逸出:
加入等体积的乙醇,析出结晶:
抽滤,干燥,即得分析纯品。
焦亚硫酸钠海关
[ 海关编码 ]: 2832100000
焦亚硫酸钠文献
PLoS ONE 10(1) , e0116819, (2015)
Cytokinins are phytohormones that regulate many developmental and environmental responses. The Medicago truncatula cytokinin receptor MtCRE1 (Cytokinin Response 1) is required for the nitrogen-fixing ...
Development of papain containing pellets produced by extrusion-spheronization: an operational stage approach.Drug Dev. Ind. Pharm. 41(3) , 430-5, (2015)
The performance of the standardized extrusion-spheronization technique, operational conditions, formulation parameters and storage of the final product over the bioactivity of papain containing pellet...
Quorum Sensing Peptides Selectively Penetrate the Blood-Brain Barrier.PLoS ONE 10 , e0142071, (2015)
Bacteria communicate with each other by the use of signaling molecules, a process called 'quorum sensing'. One group of quorum sensing molecules includes the oligopeptides, which are mainly produced b...
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