纯碱
纯碱用途
纯碱名称
[ CAS 号 ]:
497-19-8
[ 中文名 ]:
碳酸钠
[ 英文名 ]:
sodium carbonate
[中文别名 ]:
[英文别名 ]:
- Calcined soda
- EINECS 207-838-8
- Sodium carbonate,(trace metal basis)
- Carbonic acid disodium salt,Soda ash
- Sodium carbonate
- MFCD00003499
纯碱生物活性
纯碱物理化学性质
[ 密度 ]:
2.53
[ 沸点 ]:
1600°C
[ 熔点 ]:
851 °C(lit.)
[ 分子式 ]:
CNa2O3
[ 分子量 ]:
105.988
[ 闪点 ]:
169.8ºC
[ 精确质量 ]:
105.964287
[ PSA ]:
63.19000
[ 外观性状 ]:
白色无臭粉末
[ 折射率 ]:
1.535
[ 储存条件 ]:
库房低温,通风,干燥
[ 稳定性 ]:
Stable. Incompatible with powdered alkaline earth metals, aluminium, organic nitro compounds, fluorine, alkali metals, nonmetallic oxides, concentrated sulfuric acid, oxides of phosphorus.
[ 水溶解性 ]:
22 g/100 mL (20 ºC)
纯碱MSDS
纯碱毒性和生态
CHEMICAL IDENTIFICATION
- RTECS NUMBER :
- VZ4050000
- CAS REGISTRY NUMBER :
- 497-19-8
- LAST UPDATED :
- 199710
- DATA ITEMS CITED :
- 20
- MOLECULAR FORMULA :
- C-O3.2Na
- MOLECULAR WEIGHT :
- 105.99
- WISWESSER LINE NOTATION :
- QVQ &-NA- 2
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
- TYPE OF TEST :
- Standard Draize test
- ROUTE OF EXPOSURE :
- Administration onto the skin
- SPECIES OBSERVED :
- Rodent - rabbit
- REFERENCE :
- 28ZPAK "Sbornik Vysledku Toxixologickeho Vysetreni Latek A Pripravku," Marhold, J.V., Institut Pro Vychovu Vedoucicn Pracovniku Chemickeho Prumyclu Praha, Czechoslovakia, 1972 Volume(issue)/page/year: -,7,1972
- TYPE OF TEST :
- Standard Draize test
- ROUTE OF EXPOSURE :
- Administration into the eye
- SPECIES OBSERVED :
- Rodent - rabbit
- REFERENCE :
- 28ZPAK "Sbornik Vysledku Toxixologickeho Vysetreni Latek A Pripravku," Marhold, J.V., Institut Pro Vychovu Vedoucicn Pracovniku Chemickeho Prumyclu Praha, Czechoslovakia, 1972 Volume(issue)/page/year: -,8,1972
- TYPE OF TEST :
- Rinsed with water
- ROUTE OF EXPOSURE :
- Administration into the eye
- SPECIES OBSERVED :
- Rodent - rabbit
- REFERENCE :
- TXCYAC Toxicology. (Elsevier Scientific Pub. Ireland, Ltd., POB 85, Limerick, Ireland) V.1- 1973- Volume(issue)/page/year: 23,281,1982
- TYPE OF TEST :
- Standard Draize test
- ROUTE OF EXPOSURE :
- Administration into the eye
- SPECIES OBSERVED :
- Rodent - rabbit
- REFERENCE :
- GTPZAB Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1-36, 1957-1992. For publisher information, see MTPEEI Volume(issue)/page/year: 20(11),55,1976 ** ACUTE TOXICITY DATA **
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 4090 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- 28ZPAK "Sbornik Vysledku Toxixologickeho Vysetreni Latek A Pripravku," Marhold, J.V., Institut Pro Vychovu Vedoucicn Pracovniku Chemickeho Prumyclu Praha, Czechoslovakia, 1972 Volume(issue)/page/year: -,8,1972
- TYPE OF TEST :
- LC50 - Lethal concentration, 50 percent kill
- ROUTE OF EXPOSURE :
- Inhalation
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 2300 mg/m3/2H
- TOXIC EFFECTS :
- Lungs, Thorax, or Respiration - dyspnea Gastrointestinal - other changes
- REFERENCE :
- ENVRAL Environmental Research. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1967- Volume(issue)/page/year: 31,138,1983
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- 6600 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- GTPZAB Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1-36, 1957-1992. For publisher information, see MTPEEI Volume(issue)/page/year: 20(11),55,1976
- TYPE OF TEST :
- LC50 - Lethal concentration, 50 percent kill
- ROUTE OF EXPOSURE :
- Inhalation
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- 1200 mg/m3/2H
- TOXIC EFFECTS :
- Lungs, Thorax, or Respiration - dyspnea Gastrointestinal - other changes
- REFERENCE :
- ENVRAL Environmental Research. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1967- Volume(issue)/page/year: 31,138,1983
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Intraperitoneal
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- 117 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- COREAF Comptes Rendus Hebdomadaires des Seances, Academie des Sciences. (Paris, France) V.1-261, 1835-1965. For publisher information, see CRASEV. Volume(issue)/page/year: 257,791,1963
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Subcutaneous
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- 2210 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- RPTOAN Russian Pharmacology and Toxicology (English Translation). Translation of FATOAO. (Euromed Pub., 33, Woodlands Rd., Surbiton, Surrey, UK) V.30- 1967- Volume(issue)/page/year: 33,266,1970
- TYPE OF TEST :
- LC50 - Lethal concentration, 50 percent kill
- ROUTE OF EXPOSURE :
- Inhalation
- SPECIES OBSERVED :
- Rodent - guinea pig
- DOSE/DURATION :
- 800 mg/m3/2H
- TOXIC EFFECTS :
- Lungs, Thorax, or Respiration - dyspnea Gastrointestinal - other changes
- REFERENCE :
- ENVRAL Environmental Research. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1967- Volume(issue)/page/year: 31,138,1983 ** OTHER MULTIPLE DOSE TOXICITY DATA **
- TYPE OF TEST :
- TCLo - Lowest published toxic concentration
- ROUTE OF EXPOSURE :
- Inhalation
- SPECIES OBSERVED :
- Mammal - species unspecified
- DOSE/DURATION :
- 16200 ug/m3/17W-I
- TOXIC EFFECTS :
- Sense Organs and Special Senses (Olfaction) - change in sensation of smell Vascular - BP elevation not characterized in autonomic section Lungs, Thorax, or Respiration - respiratory depression
- REFERENCE :
- GTPZAB Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1-36, 1957-1992. For publisher information, see MTPEEI Volume(issue)/page/year: 20(11),55,1976 ** REPRODUCTIVE DATA **
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Intrauterine
- DOSE :
- 84800 ng/kg
- SEX/DURATION :
- female 4 day(s) after conception
- TOXIC EFFECTS :
- Reproductive - Fertility - pre-implantation mortality (e.g. reduction in number of implants per female; total number of implants per corpora lutea)
- REFERENCE :
- JRPFA4 Journal of Reproduction and Fertility. (Biochemical Soc. Book Depot, POB 32, Commerce Way, Colchester, Essex CO2 8HP, UK) V.1- 1960- Volume(issue)/page/year: 63,365,1981 *** 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 : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 68850 No. of Facilities: 148455 (estimated) No. of Industries: 389 No. of Occupations: 193 No. of Employees: 1143671 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 68850 No. of Facilities: 97764 (estimated) No. of Industries: 385 No. of Occupations: 220 No. of Employees: 2001842 (estimated) No. of Female Employees: 761463 (estimated)
纯碱安全信息
[ 符号 ]:
GHS07
[ 信号词 ]:
Warning
[ 危害声明 ]:
H319
[ 警示性声明 ]:
P305 + P351 + P338
[ 个人防护装备 ]:
dust mask type N95 (US);Eyeshields;Gloves
[ 危害码 (欧洲) ]:
Xi:Irritant
[ 风险声明 (欧洲) ]:
R36
[ 安全声明 (欧洲) ]:
S36/37-S26-S22-S36-S39
[ 危险品运输编码 ]:
UN 3082 9/PG 3
[ WGK德国 ]:
2
[ RTECS号 ]:
XN6476000
[ 海关编码 ]:
2836200000
纯碱合成路线
纯碱上下游产品
纯碱上游产品
纯碱下游产品
纯碱制备
1.氨碱法
原盐(食盐)溶于水,加入适量的石灰乳以除镁,通入CO2以除钙。经净化的食盐水通入氨气进行吸氨,吸氨母液中再通入CO2进行碳化,析出碳酸氢钠,经过滤、煅烧得碳酸钠。母液中加入石灰乳,并将氨气蒸出供吸氨用。
2.联碱法
将氨气通人盐析结晶的母液进行吸氨,吸氨母液再通人CO2进行碳化,析出碳酸氢钠结晶,经过滤、煅烧得纯碱。母液再进行吸氨,析出氯化铵结晶,过滤后再加入食盐,进一步析出氯化铵结晶。过滤后母液重新去吸氨,如此不断地循环。反应式与氨碱法相同。
有氨碱法、联碱法、天然碱加工等。
氨碱法主要反应如下:
其工艺流程简述如下:原盐用水溶解,除钙、镁后制成精盐水(或称二次盐水,下同)。二次盐水经吸氨,制成NaCl浓度在89滴度以上,FNH3与Na+浓度之比为1.13~1.18的氨盐水。氧盐水冷却至35~38℃后送至碳化工段,与来自石灰窑和煅烧炉经压缩的二氧化碳进行反应,生成碳酸氢钠悬浮液,流至滤过工段,碳酸氧钠(重碱)结晶从悬浮液中分离出来,送至煅烧上段,在160℃左右煅烧分解,制得纯碱产品。过滤母液与来自石灰工段的石灰乳混合制成调和液,并在蒸馏塔中用蒸汽加热蒸出其中的氨,供盐水吸氨循环使用。
联碱法联合制碱法生产流程分为制碱过程(又称I过程)和制铵过程(又称Ⅱ过程),联产纯碱和氯化铵,母液则在两过程中构成封闭循环。
主要反应与氨碱法相同。其工艺流程简述如下:将原盐(氯化钠)用饱和盐水洗涤除去钙、镁杂质,再经粉碎、洗涤、稠厚、分离,制得符合规定纯度(含NaCl≥98%)、粒度(10~20网目)的洗盐,送至盐析结晶器。由盐析结晶器溢流的母液Ⅱ在吸氨器内吸收氨制成氨母液Ⅱ,经澄清后送入碳化塔内吸收二氧化碳(碳化)制成碳酸氢钠悬浮液,碳酸氢钠悬浮液经过滤,得到固体碳酸氢钠,再经煅烧即得到纯碱产品。
过滤重碱后的母液(母液I)经吸氨制成氨母液I,经换热器与母液Ⅱ换热,降温后送入冷析结晶器,通过外冷器与载冷体(卤水)或者与冷冻剂(液氨)直接进行热交换,在5~10℃条件下冷却析出部分氯化铵。冷析结晶器溢流液(半母液Ⅱ)流人盐析结晶器,加入洗盐再析出部分氯化铵。由冷析及盐析结晶器取出的氯化铵悬浮液经稠厚、分离,得到湿氯化铵,送干铵炉干燥即为氯化铵产品。盐析结晶器溢流液(母液Ⅱ)与氨母液l换热后经吸氨制成氨母液Ⅱ,再送至碳化塔制碱。如此连续循环,不断地生产出纯碱和氯化铵两种产品。
3.天然碱加工法
倍半碱流程此法是以倍半碱为原料生产纯碱的方法.美国部分天然碱加工厂采用。
矿石粉碎至20目(O.8mm)左右,送入溶解槽,用循环母液溶解制成饱和溶液,进入澄清桶澄清,其底流送增稠器,加水洗涤回收泥中的碱分,澄清桶溢流液经过滤送三效蒸发器蒸发,从第三效蒸发器取出的晶浆用泵送入稠厚器,再经离心脱水,得倍半碳酸钠滤饼,经煅烧即制得纯碱。
一水碳流程此法也是以倍半碱为原料生产纯碱的方法,其产品质量优于倍半碱流程,美国多数天然碱加工厂采用。
矿石粉碎至6 mm左右,送煅烧炉,在150℃左右煅烧,矿石大部分为粗纯碱,进人溶解槽,在略低于100℃条件下溶解,澄清后送人三效蒸发器,蒸浓后的悬浮碱液分离得到一水碳酸钠,送干燥器干燥即得重质纯碱。
碳酸化法该法是以天然碱卤为原料的生产方法,我国大布苏等地天然碱加工采用。
天然碱溶采或用水溶解后的碱卤经澄清、预热后通人二氧化碳进行碳酸化,再经过滤、煅烧即制得纯碱产品。20世纪80年代中期开发成功氨化碳化法,即将精制的碱卤先吸氮后碳化,此后工序同前。氨化碳化法与直接碳化法相比,钠利用率可由25%提高到65%~70%。
天然碱卤蒸发法用溶采天然碱矿或从碱湖挖掘的天然碱制得碱卤,经精制、分离、预热、蒸发、分离、煅烧即制得莺质纯碱。
碳酸钠合成法将粗碳酸钠和碳酸氢钠经蒸汽溶解,沉降除杂后清液,通二氧化碳反应到一定浓度后,再经蒸馏、冷却、结晶即得倍半碳酸钠,其反应方程式如下:
天然碱法 以天然碱为原料经蒸汽溶解,澄清除杂,清液含碳酸钠、碳酸氢钠及硫酸钠等组分,经窑气碳化使部分Na2CO3重碳酸化为NaHCO3,在60℃蒸发析出生成相应的复合物,分离制得倍半碳酸钠成品。母液再蒸发即可析出芒硝碱。其反应旅程式:
目前我国均采用氨碱法或联碱法直接制造食用纯碱。在生产轻质纯碱过程中,要增加除砷和除重金属杂质的精制工序.其他工序参见工业碳酸钠。
4.以工业无水碳酸钠为原料,搅拌加入0.4%的氢氧化钠溶液至密度为1.28~1.30,保温10h,使氢氧化铁、氢氧化镁、氢氧化钙充分沉淀,滤去沉淀后,在滤液中缓慢通入洗净的二氧化碳,以中和过量的氢氧化钠,使之生成碳酸氢钠,蒸发结晶,得到结晶碳酸钠,在560~580℃下焙烧脱水,得无水碳酸钠试剂。若将所得到的中间产物碳酸钠再溶解、过滤,重结晶一次,经焙烧后可得分析纯或优级纯试剂。
5.先将去离子水放入不锈钢桶中,不断搅拌下慢慢加入工业品无水碳酸钠 ( 2.5份碳钠) ,之后,加热至60℃,待全部溶解后,过滤。无色透明滤液静置冷却结晶 ( 经常搅拌,以得小颗粒,便于甩干) ,得到结晶为碳酸钠。离心脱水,检验犆 犾 -离子含量合格后 ( 若过高,用冷的去离子水洗涤) ,装入不锈钢罐,加热熔融至有小颗粒的一水合物和二水合物析出 ( 白色粉末) ,取出甩干。甩干后的碳酸钠和碳酸钠混合物,装入干燥器中,于110℃左右干燥,得无水碳酸钠。
纯碱海关
[ 海关编码 ]: 2836200000
纯碱文献
J. Chromatogr. A. 1356 , 105-16, (2014)
Kafirin is a natural, hydrophobic and celiac safe prolamin protein obtained from sorghum seeds. Today kafirin is found to be useful in designing delayed delivery systems and coatings of pharmaceutical...
Studying the chemistry of cationized triacylglycerols using electrospray ionization mass spectrometry and density functional theory computations.J. Am. Soc. Mass Spectrom. 25(8) , 1421-40, (2014)
Analysis of triacylglycerols (TAGs), found as complex mixtures in living organisms, is typically accomplished using liquid chromatography, often coupled to mass spectrometry. TAGs, weak bases not prot...
Embryonic development and maternal regulation of murine circadian clock function.Chronobiol. Int. 32(3) , 416-27, (2015)
The importance of circadian clocks in the regulation of adult physiology in mammals is well established. In contrast, the ontogenesis of the circadian system and its role in embryonic development are ...
相关化工产品/化学物质:
推荐生产厂家/供应商:
公司名:武汉吉鑫益邦生物科技有限公司
区域:武汉市江汉区
价格:
¥需询单/500g
¥需询单/1kg
¥需询单/25kg
¥需询单/200kg
联系人:周美玲
产品详情:纯碱
公司名:廊坊乾耀科技有限公司
区域:廊坊市大城县
价格:
¥15.0/500g
¥7.5/25kg
联系人:李菊青
产品详情:碳酸钠
公司名:上海化源世纪贸易有限公司
区域:上海市普陀区
价格:
联系人:徐经理
产品详情:无水碳酸钠
公司名:上海吉至生化科技有限公司
区域:上海市奉贤区
价格:
¥88.0/1kg
联系人:刘佳
产品详情:无水碳酸钠
公司名:上海创赛科技有限公司
区域:上海市嘉定区
价格:
¥157.0/2500g
¥459.0/10kg
¥44.0/500g
¥221.0/2500g
联系人:夏言
产品详情:[Perfemiker]无水碳酸钠,AR,≥99.5%
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纯碱相关知识
2019-07-21 21:46:00
碳酸钠20℃时每一百克水能溶解20克碳酸钠,35.4℃时溶解度最大,100克水中可溶解49.7克碳酸钠,微溶于无水乙醇,难溶于丙醇。碳酸氢钠在水中的溶解度小于碳酸钠,固体50℃以上开始逐渐分解生成碳酸钠、二氧化碳和水,270℃时完全分解。碳酸钠的溶解度表如下(单位:g/100g水):温度 0℃ 1...
2019-07-29 14:27:40
碳酸钠和盐酸反应分盐酸少量和盐酸过量两种情况。具体的反应方程式如下:如果盐酸少量(盐酸滴入碳酸钠溶液):Na₂CO₃ + HCl = NaCl + NaHCO₃ 无气体产生如果盐酸足量(碳酸钠溶液滴入盐酸):Na₂CO₃ + 2HCl = 2NaCl + H₂O + CO₂↑ 有气体产生碳酸钠是一...
相关化合物
【纯碱】化源网提供纯碱CAS号497-19-8,纯碱MSDS及其说明、性质、英文名、生产厂家、作用/用途、分子量、密度、沸点、熔点、结构式等。CAS号查询纯碱上化源网,专业又轻松。>>电脑版:纯碱
标题:纯碱_MSDS_用途_密度_纯碱CAS号【497-19-8】_化源网 地址:https://www.chemsrc.com/amp/cas/497-19-8_951916.html