CAS 144-62-7 MFCD00002573-Oxalic acid 无水草酸 TAO{mole}

Oxalic acid 无水草酸

CAS 144-62-7 MFCD00002573

化学结构图

SMILES: O=C(O)C(=O)O

化学属性

Mol. Formula	C2H2O4
Mol. Weight	90.03
Melting Point	189.5 °C
Vapor Density	4.4 (vs air)
Vapor Pressure	<;0.01 mmHg ( 20 °C)
TSCA	Yes
Density	1.9
Solubility	90 G/L (20 ºC)
Flash Point	101-157°C
Boiling Point	365.1 °C at 760 mmHg
Stability	对湿度敏感

别名和识别编码

Chemical Name	Oxalic acid
CAS Number	144-62-7
Synonym	Oxalic acid, 99% {LY} Oxalic acid, 99% {} {LY} Oxalic acid, 99% {} {} {LY} Oxalic acid, 99% {} {} {} {LY} Oxalic acid, 99% {} {} {} {} {LY} Oxalic acid, 99% {} {} {} {} {} {LY} Oxalic acid, 99% {} {} {} {} {} {} {LY} Oxalic acid, 99% {} {} {} {} {} {} {} {LY} Oxalic acid, 99% {} {} {} {} {} {} {} {} {LY} Oxalic acid, 99% {} {} {} {} {} {} {} {} {} {LY} Oxalic acid, 99% {} {} {} {} {} {} {} {} {} {} {LY} Oxalic acid, 99% {} {} {} {} {} {} {} {} {} {} {} { {} {} {} {} {} {} {} {} {} {} {} {LY} Oxalic acid, 99% {} {} {} {} {} {} {} {} {} {} {} {} { {} {} {} {} {} {} {} {} {} {} {} {} {LY} Oxalic acid, 99% {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Oxalic acid, 99% {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Oxalic acid, 99% {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} { {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Oxalic acid, 99% {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {}
PubChem Substance ID	971
EC Number	205-634-3
Beilstein Registry Number	385686
MDL Number	MFCD00002573
Merck Number	14,6911
Chemical Name Translation	无水草酸
Wiswesser Line Notation	QVVQ
LabNetwork Molecule ID	LN00194479
InChI	InChI=1S/C2H2O4/c3-1(4)2(5)6/h(H,3,4)(H,5,6)
Canonical SMILES	OC(C(O)=O)=O

信息真实价格透明资金保障专业采购外包团队在线服务

品牌质保精细包装现货库存一流品牌服务

产品应用

Oxalic acid was used:
· in the synthesis of hemicellulose hydrolysates of yellow poplars;
· in the synthesis of three-dimensionally ordered macroporous metal oxides or carbonates via templating with polystyrene spheres;
· as supporting electrolyte in the electrochemical synthesis of polyaniline-polypyrrole composite coatings.

安全信息

GHS Symbol

WGK Germany1

Hazard Codes Xn

Hazard statements

H318 Causes serious eye damage 严重伤害眼睛
H302+H312
H314 Causes severe skin burns and eye damage 导致严重的皮肤灼伤和眼睛损伤

Personal Protective Equipment Eyeshields, Gloves, half-mask respirator (US), multi-purpose combination respirator cartridge (US) Eyeshields, Gloves, half-mask respirator (EU), half-mask respirator (US), multi-purpose combination respirator cartridge (US) dust mask type N95 (US), Eyeshields, Gloves Eyeshields, Gloves Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter

RTECSRO2450000

Precautionary statements

Signal word

Safety Statements

S36/37 Wear suitable protective clothing and gloves 穿戴适当的防护服和手套；
S24/25 Avoid contact with skin and eyes 避免皮肤和眼睛接触；
S23 Do not breathe gas/fumes/vapour/spray (appropriate wording to be specified by the manufacturer) 不要吸入气体/烟雾/蒸汽/喷雾；
S27 Take off immediately all contaminated clothing 立即脱掉全部污染的衣服；
S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice 眼睛接触后，立即用大量水冲洗并征求医生意见；
S36/37/39 Wear suitable protective clothing, gloves and eye/face protection 穿戴适当的防护服、手套和眼睛/面保护；
S39 Wear eye/face protection 戴眼睛/面孔保护装置；
S37 Wear suitable gloves 戴适当手套；
S36 Wear suitable protective clothing 穿戴适当的防护服；

Packing GroupIII

UN Number

Risk Statements

R21/22 Harmful in contact with skin and if swallowed 皮肤接触和不慎吞咽有害
R63 Possible risk of harm to the unborn child 可能危害未出生婴儿
R34 Causes burns 会导致灼伤

Hazard Class8

TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Unreported
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 1400 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   GISAAA Gigiena i Sanitariya.  For English translation, see HYSAAV.  (V/O
   Mezhdunarodnaya Kniga, 113095 Moscow, USSR)  V.1-    1936-
   Volume(issue)/page/year: 50(3),57,1985

TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Intraperitoneal
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 270 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   TXCYAC Toxicology.  (Elsevier Scientific Pub. Ireland, Ltd., POB 85,
   Limerick, Ireland) V.1-    1973-  Volume(issue)/page/year: 62,203,1990

TYPE OF TEST            : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Mammal - dog
DOSE/DURATION           : 1 gm/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   HBAMAK "Abdernalden's Handbuch der Biologischen Arbeitsmethoden." (Leipzig,
   Ger. Dem. Rep.)  Volume(issue)/page/year: 4,1377,1935

TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Unreported
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATIO

TYPE OF TEST

TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 7500 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   TXAPA9 Toxicology and Applied Pharmacology.  (Academic Press, Inc., 1 E.
   First St., Duluth, MN 55802) V.1-    1959-  Volume(issue)/page/year:
   42,417,1977

{hazard

TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - mouse
DOSE                    : 8400 mg/kg
SEX/DURATION            : male 7 day(s) pre-mating
                          female 7 day(s) pre-mating  - 21 day(s) after
                          conception
TOXIC EFFECTS :
   Reproductive - Fertility - other measures of fertility
   Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death,
   e.g., stunted fetus)
REFERENCE :
   NTIS** National Technical Information Service.  (Springfield, VA 22161)
   Formerly U.S. Clearinghouse for Scientific & Technical Information.
   Volume(issue)/page/year: PB86-167053

Storage condition 2-8°C {LY} 2-8°C {} {LY} 2-8°C {} {} {LY} 2-8°C {} {} {} {LY} 2-8°C {} {} {} {} {LY} 2-8°C {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} { {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} { {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {}

其他信息

用途四:草酸主要用于生产抗菌素和冰片等药物以及提炼稀有金属的溶剂、染料还原剂、鞣革剂等。此外，草酸还可用于合成各种草酸酯、草酸盐和草酰胺等产品，而以草酸二乙酯及草酸钠、草酸钙等产量最大。草酸还可用于钴-钼-铝催化剂的生产、金属和大理石的清洗及纺织品的漂白。
灭火措施:火灾时用干粉灭火剂、雾状水、CO2或抗溶性泡沫灭火。泡沫和水对熔解的草酸会引起沸溢现象。可用水使暴露在火中的容器保持冷却; 也可用水将溢漏物冲离火区。
含草酸多的食物:菠菜、苋菜、空心菜、芥菜、木耳菜、韭菜、蕹菜、洋葱、茭白、竹笋等草酸含量就很高，茶、葡萄、花生、可可、土豆、大豆、李子、大米等也含有少量草酸，而黄瓜、南瓜、西瓜、丝瓜等则完全不含草酸。每100克菠菜和苋菜中含草酸分别为606毫克和1142毫克，木耳菜含1150毫克，空心菜中含691毫克，芥菜中含471毫克。
MSDS 信息:乙二酸(144-62-7).msds
{Chem
可燃性危险特性:可燃;燃烧放出刺激烟雾
升华点:101-157 °C
草酸的提纯:草酸用作沉淀钙、钍和稀土元素，用作钽、铌熔块的浸出，用作掩蔽剂，用作高锰酸钾、硫酸铈标准溶液的标定，显微微晶分析检验钠和其他许多元素，在精制甲醇和甘油作为脱色剂。市售草酸试剂中常含有草酸钙，可以直接用于一般用途，或者只从水溶液重结晶提纯。草酸提纯方法: (1) 除去硫酸根结晶法称取60g待提纯草酸于500ml烧杯中，加入100ml去离子水溶解并加热至40～50℃溶解完全后，加入10g活性炭并搅拌20 min，如有硫酸根，可加入少量氢氧化钡使其沉淀，趁热用布氏漏斗抽滤，滤液浓缩 (温度不宜过高) 至50ml时取下冷却。在不断搅拌下结晶析出，用布氏漏斗抽滤析出的结晶，用少量冷水洗涤两次，于30～40℃真空干燥箱中干燥，每半小时搅拌一次直至不粘勺时为止，贮存于磨口试剂瓶中。 (2) 水重结晶法将100g二水合草酸溶解于700ml沸水中，煮沸2～3min。将上层清液倾出，加入30ml浓盐酸后冷却。将析出的草酸用水重结晶、抽滤、干燥。
毒性分级:中毒
下游产品:草酸二乙酯 --> 草酰氯 --> 1,4-苯二酚 --> 松香 --> 乙醛酸 --> alpha-(1-萘甲基)-2-四氢呋喃丙酸二乙胺基乙基酯草酸盐 --> 氧化钴 --> 偏钒酸铵 --> 除垢剂 --> 润滑剂 --> 专利兰A --> 盐酸林可霉素(一水物) --> 草酸二甲酯 --> 土霉素 --> 氧化钪 --> 7-三氟甲基喹啉 --> 草酸钠 --> 草酸铵 --> 草酸高铁铵 --> 草酸钡 --> 草酸二丁酯 --> 草酸钾 --> 草酸钛钾 --> (+)-灰黄
草酸中毒:草酸、草酸钾、草酸钠或草酸铵都是常见的化合物。草酸为无色透明结晶体，常用以去除墨水或铁锈渍，清洗金属器皿;在草帽工厂用作漂白剂。由于与硫酸镁性状相似，可发生误服中毒，用以自杀者较之误服案例为多。草酸味酸苦，故罕见于他杀。有将草酸注入子宫堕胎而发生中毒的例案。某些植物，如大黄叶或嫩茎，酸苜蓿及酢酱草等中含有草酸盐，人(多为小儿)、畜食用过多也可引起中毒。草酸致死量为5～15g，因易发生呕吐，故实际中毒死者，多吞服15～30g以上。草酸及浓草酸盐溶液对胃肠粘膜有腐蚀作用，溶液浓度减少，局部作用随之减轻。草酸易从胃肠道吸收，吞服大量后，口腔、咽喉、食管灼疼，上腹痛，立即放射为全腹痛、严重的恶心、呕吐，可于数分钟内死于休克。中毒时间稍长者，由于草酸与组织和血中钙离子相结合而产生低血钙症，因而出现肌肉震颤，阵挛性抽搐，影响心脏，出现心跳减慢和心律不齐。这方面毒理与氟化物中毒相似。草酸钙经肾脏排泄，造成肾脏损害，引起少尿、无尿，损害输尿管及膀胱引起血尿和尿痛。慢性草酸盐中毒可在尿道内产生结石。参考资料：中国医学百科全书编辑委员会编;郭景元主编.中国医学百科全书·六十六法医学。
Sigma Aldrich:144-62-7(sigmaaldrich)
贮存:用玻璃瓶、木桶、多层纸袋或金属桶盛装，防止机械性损坏。置阴凉、通风、干燥处，密封保存。最好使用露天仓库。远离任何可能发生严重火灾的地方。与氧化剂隔开。
{Chemica
储运特性:库房通风低温干燥; 与氧