草酸钠

草酸钠用途

用途一：用作焰火的黄色发光剂，用于制革、织物整理等
用途二：用作皮革加工的蒙囿剂，能增强络合物的耐碱能力。不易沉淀。
用途三：用作标定高锰酸钾溶液的基标试剂和织物、鞣革整理剂等
用途四：主要作生产草酸的中间体，也可用于纤维素整理剂、纺织品、皮革加工等。分析化学中作为标定高锰酸钾溶液的基准品。焰火黄色发光剂。

草酸钠名称

[ CAS 号 ]:
62-76-0

[ 中文名 ]:
草酸钠

[ 英文名 ]:
Sodium oxalate

[中文别名 ]:

[英文别名 ]:

EINECS 200-550-3
disodium,oxalate
MFCD00012465
Sodium oxalate

草酸钠物理化学性质

[ 密度 ]:
2.34

[ 沸点 ]:
365.1ºC at 760 mmHg

[ 熔点 ]:
250-270 °C

[ 分子式 ]:
Na₂C₂O₄

[ 分子量 ]:
133.999

[ 闪点 ]:
188.8ºC

[ 精确质量 ]:
133.959198

[ PSA ]:
80.26000

[ 外观性状 ]:
白色晶体或粉末

[ 储存条件 ]:
Store at RT.

[ 稳定性 ]:
Stability Stable; hygroscopic. Incompatible with strong oxidizing agents.

[ 水溶解性 ]:
37 g/L (20 ºC)

草酸钠MSDS

草酸钠毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: KI1750000

CHEMICAL NAME :: Ethanedioic acid, disodium salt

CAS REGISTRY NUMBER :: 62-76-0

LAST UPDATED :: 199709

DATA ITEMS CITED :: 7

MOLECULAR FORMULA :: C2-O4.2Na

MOLECULAR WEIGHT :: 134.00

WISWESSER LINE NOTATION :: QVVQ &-NA- 2

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Human

DOSE/DURATION :: 17 mg/kg

TOXIC EFFECTS :: Behavioral - coma Cardiac - arrhythmias (including changes in conduction) Kidney, Ureter, Bladder - urine volume decreased

REFERENCE :: MLDCAS Medecine Legale et Dommage Corporel. (Paris, France) V.1-7, 1968-74. Discontinued. Volume(issue)/page/year: 4,178,1971

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

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 155 mg/kg

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

REFERENCE :: ABMGAJ Acta Biologica et Medica Germanica. (Berlin, Ger. Dem. Rep.) V.1-41, 1958-82. For publisher information, see BBIADT. Volume(issue)/page/year: 6,498,1961

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 100 mg/kg

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

REFERENCE :: AIPTAK Archives Internationales de Pharmacodynamie et de Therapie. (Heymans Institute of Pharmacology, De Pintelaan 185, B-9000 Ghent, Belgium) V.4- 1898- Volume(issue)/page/year: 8,255,1901

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Mammal - cat

DOSE/DURATION :: 100 mg/kg

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

REFERENCE :: HDWU** "Beitrage zur Toxikologie des Athylenoxyds und der Glykole, Dissertation," Hofbauer, A., Pharmakologischen Institut der Universitat Wurzburg, Fed. Rep. Ger., 1933 Volume(issue)/page/year: -,-,1933 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 84235 No. of Facilities: 940 (estimated) No. of Industries: 14 No. of Occupations: 14 No. of Employees: 9551 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 84235 No. of Facilities: 583 (estimated) No. of Industries: 11 No. of Occupations: 12 No. of Employees: 8309 (estimated) No. of Female Employees: 3508 (estimated)

草酸钠安全信息

[ 符号 ]:

GHS07

[ 信号词 ]:
Warning

[ 危害声明 ]:
H302 + H312

[ 警示性声明 ]:
P280

[ 个人防护装备 ]:
Eyeshields;Gloves;half-mask respirator (US);multi-purpose combination respirator cartridge (US)

[ 危害码 (欧洲) ]:
Xn:Harmful

[ 风险声明 (欧洲) ]:
R21/22

[ 安全声明 (欧洲) ]:
S24/25-S45-S36/37/39-S26-S36

[ 危险品运输编码 ]:
3282

[ WGK德国 ]:
1

[ RTECS号 ]:
KI1750000

[ 包装等级 ]:
III

[ 危险类别 ]:
6.1(b)

[ 海关编码 ]:
2917119000

草酸钠合成路线

草酸钠上下游产品

草酸钠上游产品

草酸钠下游产品

草酸钠制备

1.一氧化碳和氢氧化钠在160℃和2MPa条件下反应，生成甲酸钠，然后，再将甲酸钠在400℃温度下脱氢即得草酸钠。

2.取212g碳酸钠加热溶于1L水中，往此水溶液中加入少量草酸水溶液，此时，在生成草酸钠沉淀的同时可使其中的杂质与草酸钠共沉淀而除去。再取252g精制的草酸，溶于1L热水(90℃)中，在烧杯中，预先将500mL水热至90℃，在搅拌下，用分液漏斗将草酸和碳酸钠水溶液等体积的慢慢滴入烧杯中，此过程应保持溶液的pH值为6～7。滴毕，再稍加热后，冷却此溶液并滤出生成的结晶，用冷水洗涤，晶体在240～250℃下干燥，再置于浓硫酸的干燥器中。

草酸钠的精制依上法制得的或市售的草酸钠可用水重结晶纯化。先用热水溶解，在约90℃下达到饱和，趁热抽滤，再往滤液中加入75%(体积分数)的乙醇水溶液，放置冷却，滤出晶体，在250℃下干燥。由于草酸钠水溶液能与玻璃器皿发生反应，也因为原料中含有杂质，使产品中含有二氯化硅和碳酸钠，建议草酸钠的制备操作应注意尽快操作，也可用精制的氢氧化钠代替碳酸钠。此外，在制备草酸钠时，如溶液偏酸性，会生成微量草酸氢钠，与草酸钠共沉淀析出，产品如在250～300℃下干燥,草酸氢钠即可发生热分解而成碳酸钠。

3.将二水合草酸溶于水，加热，逐滴加入氢氧化钠溶液析出草酸钠结晶后，依次用水和无水乙醇洗涤，干燥得纯品草酸钠。

4.不断搅拌下将氢氧化钠溶液缓慢加到70～80℃的草酸水溶液中，直至酚酞呈强碱性反应，并维持温度不变：

反应结束后，快速滤出草酸钠结晶，水洗至PH值合格后，用少量乙醇洗涤，并强力吸滤，然后在不断搅动下，于150～200℃干燥即可。

草酸钠海关

[ 海关编码 ]: 2917119000

[ 中文概述 ]:
2917119000 其他草酸盐和酯。监管条件:无。增值税率:17.0%。退税率:9.0%。最惠国关税:6.5%。普通关税:30.0%

[ 申报要素 ]: 品名, 成分含量, 用途, 对苯二甲酸请注明4-CBA值, 对苯二甲酸请注明P-TL酸值, 对苯二甲酸请注明色度, 对苯二甲酸请注明水分

[ Summary ]:
2917119000 oxalic acid salts and esters VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0%

草酸钠文献

Voltammetric Detection of Oxalic Acid by Using Glassy Carbon Electrodes with Covalently Attached Nitrogen-containing Functional Groups.

Anal. Sci. 31 , 733-5, (2015)

We report on a novel voltammetric detection of oxalic acid by using glassy carbon electrodes with covalently attached nitrogen-containing functional groups prepared by stepwise electrolysis. A glassy ...

Are fluoride-containing blood tubes still needed for glucose testing?

Clin. Biochem. 46(4-5) , 289-90, (2013)

Carbonic anhydrase inhibitors. Interaction of isozymes I, II, IV, V, and IX with carboxylates.

Bioorg. Med. Chem. Lett. 15 , 573-8, (2005)

A detailed inhibition study of five carbonic anhydrase (CA, EC 4.2.1.1) isozymes with carboxylates including aliphatic (formate, acetate), dicarboxylic (oxalate, malonate), hydroxy/keto acids (l-lacta...

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草酸钠