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Oxalic acid
Cas No: 144-62-7
USD $ 3.0-3.0 / Kilogram 1 Kilogram 1-100 Metric Ton/Month Hangzhou Dayangchem Co., Ltd. Contact Supplier
Oxalic Acid
Cas No: 144-62-7
USD $ 1.0-3.0 / Kilogram 1 Kilogram 10 Kilogram/Day Hebei yanxi chemical co.,LTD. Contact Supplier
High quality Oxalic acid
Cas No: 144-62-7
USD $ 1.0-1.0 / Kilogram 10 Kilogram 50 Metric Ton/Day Hubei Jusheng Technology Co., Ltd., Contact Supplier
High purity Oxalic Acid with high quality and best price cas:144-62-7
Cas No: 144-62-7
USD $ 7.0-15.0 / Kilogram 1 Kilogram 99999 Kilogram/Year Hangzhou Dingyan Chem Co., Ltd Contact Supplier
Oxalic Acid
Cas No: 144-62-7
No Data 1 Kilogram 3000 Metric Ton/Year Hefei TNJ chemical industry co.,ltd Contact Supplier
High quality Oxalic acid anhydrous supplier in China
Cas No: 144-62-7
No Data No Data No Data Simagchem Corporation Contact Supplier
Oxalic acid CAS. NO.144-62-7
Cas No: 144-62-7
No Data 1 Kilogram 1000 Metric Ton/Week Crovell Biotech (Hebei) Co., Ltd. Contact Supplier
Oxalic acid
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USD $ 1.0-2.0 / Metric Ton 5 Metric Ton 3500 Metric Ton/Day Henan Sinotech Import&Export Corporation Contact Supplier
Oxalic Acid
Cas No: 144-62-7
No Data 1 Metric Ton 1000 Metric Ton/Day HENAN SUNLAKE ENTERPRISE CORPORATION Contact Supplier
Available Oxalic Acid ,CAS 144-62-7 Acidity Regulators For Metallurgy Industry
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No Data 100 Gram 20000 Kilogram/Day Hubei XinRunde Chemical Co., Ltd Contact Supplier

144-62-7 Usage


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.

Reactivity Profile

Oxalic acid is hygroscopic and sensitive to heat. Oxalic acid may react violently with furfuryl alcohol, silver, sodium, perchlorate, sodium hypochlorite, strong oxidizers, sodium chlorite, acid chlorides, metals and alkali metals. . The heating of mixtures of Oxalic acid and urea has lead to explosions. This is due to the rapid generation of the gases, CO2, CO, and NH3, [Praxis Naturwiss. Chem., 1987, 36(8), 41-42]. Oxalic acid and urea react at high temperatures to form toxic and flammable ammonia and carbon monoxide gasses, and inert CO2 gas [Von Bentzinger, R. et al., Praxis Naturwiss. Chem., 1987, 36(8), 41-42].


1. Oxalic acid can be mainly used as reducing agent and bleaching agent, mordant for dyeing and printing industry, also used in refining rare metal, the synthesis of various oxalate ester amide, oxalate and grass, etc.
2. Used as analytical reagent.
3. Used as laboratory reagents, chromatography analysis reagent, dye intermediates and standard material.
4. Oxalic acid is mainly used for producing drugs such as antibiotics and borneol and solvent for extracting the rare metal, reducing agent and dye, tanning agent, etc. In addition, oxalic acid can also be used for the synthesis of various kinds of oxalate ester, oxalate, and oxamide with diethyl oxalate, sodium oxalate and calcium oxalate having the largest yield. Oxalate can also be used for the production of cobalt-molybdenum-alumina catalyst, cleaning of metal and marble as well as the bleaching of textiles.


An impurity of oxaliplatin which is a coordination complex that is used in cancer chemotherapy.

Chemical properties

Oxalic acid is widely distributed in the plant in nature, most existing in the form of oxalic acid salt. C.W. Scheele had for the first time manufactured oxalate in 1776.
Oxalate is the strongest acid among the dicarboxylic acid. Besides having the general properties of the carboxylic acid, it also has reducing property and can quantitatively reduce the seven valence manganese to bivalent manganese. This property is often used for quantitative analysis of potassium permanganate.
5 C2H2O4 + 2 KMnO4 + 3 H2SO4 →K2SO4 + 2 MNSO4 + 8H2O + 10 CO2;
Oxalic acid can also reduce the trivalent iron into bivalent iron. Because of the high solubility of the bivalent iron in the water, we can apply this principle to remove rust on the clothes.
Oxalic acid can react with phosphorus pentachloride to generate phosphorus oxychloride. C2H2O4 + PCl5 → POCl3 + CO + CO2 + 2 HCL.
Oxalic acid can react with many metals to produce oxalic acid salt. In addition to the alkali metal salt and bivalent iron salts with the rest of the oxalic acid salt being poorly soluble in water. Some metal salt, although is poorly soluble in water, can generate complex that is soluble in water.
Fe2 (C2O4) 3 + 3 K2C2O4 + 6 H2O →2 K3 [Fe (C2O4) 3] ? 6 H2O.
Upon heating, alkali metal and alkaline earth metal oxalic acid salt can lose carbon monoxide and form carbonates with carbonate continuing to be subject to heating to be further decomposed into oxide and carbon dioxide. The oxalic acid salt of nickel, cobalt and silver can finally produce metal instead of nonmetal oxide.
The decomposing products of the oxalate are carbon dioxide, carbon monoxide and water.
Oxalate and oxalic acid salt are toxic. Mice, through oral administration, has LD50 of 2000~4000 mg/kg.
The above information is edited by the chemicalbook of Dai Xiongfeng.

Health Hazard

As dust or as a solution, can cause severe burns of eyes, skin, or mucous membranes. Ingestion of 5 grams has caused death with symptoms of nausea, shock, collapse, and convulsions coming on rapidly. Repeated or prolonged skin exposure can cause dermatitis and slow-healing ulcers.


ChEBI: An alpha,omega-dicarboxylic acid that is ethane substituted by carboxyl groups at positions 1 and 2.

waste disposal

Pre-processing includes chemical reaction with limestone or calcium oxide to generate calcium oxalate. It can be then subject to calcination and can put into particle collection device to collect for reuse.

Protective measures

Upon productive operation, we must wear protective work cloth in order to prevent the skin repeatedly or long-term contact. Wear protective glasses to prevent eye contact. For the nitrogen oxide gas produced during the production process, measures should be taken to absorb before discharge. Work clothes if contaminated, should be replaced every day. Permeable work clothes, if getting wet, should be taken off quickly.

Air & Water Reactions

Water soluble. Hygroscopic

Medical Surveillance

During employment and regular physical examination, we should check the skin, respiratory tract, and kidney function. If there is growing oxalic acid salt crystal in the urine, it is helpful to ascertain the oral poisoning. We should pay attention to follow-up. The determination of blood calcium and blood oxalic acid salt content is also suitable for this purpose.


Oxalic acid is a strong dicarboxylic acid occurring in many plants and vegetables, usually as its calcium or potassium salts. Oxalic acid is the only possible compound in which two carboxyl groups are joined directly; for this reason oxalic acid is one of the strongest organic acids. Unlike other carboxylic acids (except formic acid), it is readily oxidized; this makes it useful as a reducing agent for photography, bleaching, and ink removal. Oxalic acid is usually prepared by heating sodium formate with sodium hydroxide to form sodium oxalate, which is converted to calcium oxalate and treated with sulfuric acid to obtain free oxalic acid.
concentrations of oxalic acid are pretty low in most plants and plant-based foods, but there’s enough in spinach, chard and beet greens to interfere with the absorption of the calcium these plants also contain.
It is produced in the body by metabolism of glyoxylic acid or ascorbic acid. It is not metabolized but excreted in the urine. It is used as an analytical reagent and general reducing agent.Oxalic acid is a natural acaricide used for treatment against varroa mites in colonies with no/low brood, packages, or swarms. Vaporized oxalic acid is used by some beekeepers as an insecticide against the parasitic Varroa mite.


We should hold it with glass bottle, cask, multi-layer paper bag or metal barrel to prevent mechanical damage. It should be placed in cool, ventilated, dry place for sealed storage. It is best to use the open warehouse and should be placed far away from any places that have potential risk of serious fire. It should be stored separately from antioxidant.

Fire Hazard

Special Hazards of Combustion Products: Generates poisonous gases

General Description

Odorless white solid. Sinks and mixes with water.

First aid

This kind of chemical, in case of contact with eyes and skin, should be quickly rinsed with plenty of water; Upon inhaling of large amount, we should immediately move the victim away from the scene to fresh air place; if necessary, apply artificial respiration; if be swallowed, immediately give medical injection with plenty of water for rapid gastric lavage and apply symptomatic treatment.

Chemical Properties

white crystalline powder

144-62-7 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
Sigma-Aldrich (75688)  Oxalicacid  puriss. p.a., anhydrous, ≥99.0% (RT) 144-62-7 75688-250G 924.30CNY Detail
Sigma-Aldrich (75688)  Oxalicacid  puriss. p.a., anhydrous, ≥99.0% (RT) 144-62-7 75688-50G 537.03CNY Detail
Sigma-Aldrich (68487)  Oxalic acid concentrate  0.1 M (COOH)2 (0.2N), eluent concentrate for IC 144-62-7 68487-1L 386.10CNY Detail
Fluka (35295)  Oxalicacidsolution  volumetric, 0.5 M (COOH)2 (1N) 144-62-7 35295-1L 582.66CNY Detail
Fluka (34287)  Oxalicacidsolution  volumetric, 0.1 M (COOH)2 (0.2N) 144-62-7 34287-1L-R 562.77CNY Detail
Fluka (319201)  Oxalicacidsolution  volumetric, 0.05 M (COOH)2 (0.1N) 144-62-7 319201-500ML 321.75CNY Detail
Fluka (35294)  Oxalicacidsolution  volumetric, 0.05 M (COOH)2 (0.1N) 144-62-7 35294-1L 448.11CNY Detail
Fluka (38250)  Oxalic acid concentrate  for 1L standard solution, 0.05 M (COOH)2 (0.1N) 144-62-7 38250-1EA 260.91CNY Detail
Fluka (38255)  Oxalic acid concentrate  for 1L standard solution, 0.005 M (COOH)2 (0.01N) 144-62-7 38255-1EA 260.91CNY Detail
Alfa Aesar (44410)  Oxalic acid, anhydrous, 98%    144-62-7 250g 249.0CNY Detail
Alfa Aesar (44410)  Oxalic acid, anhydrous, 98%    144-62-7 50g 157.0CNY Detail



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017


1.1 GHS Product identifier

Product name oxalic acid

1.2 Other means of identification

Product number -
Other names Aktisal

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Paint additives and coating additives not described by other categories,Photosensitive chemicals,Surface active agents
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:144-62-7 SDS

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