Oxalic Acid 99.6% White Crystal CAS 144-62-7 Industrial Grade
48 Inquiries
144-62-7
Industrial Grade
99.6%
Qingdao
Guozhao
25kg/bag
2026-10-11
CHEMICALS
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Product Description
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Seller Information
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Inquiry History
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DescriptionECHEMI Editorial ReferenceOxalic acid gets its name from the fact that early researchers isolated it from flowering plants of the genus Oxalis. It is the simplest dicarboxylic acid, a colorless monoclinic flaky or prismatic crystal or white powder, which dissolves in water to form a colorless solution. Oxalic acid produced by oxidation is odorless, while synthetic oxalic acid has a taste. It sublimates at 150-160°C and can weather in hot dry air. 1 g of oxalic acid dissolves in 7 mL of water, 2 mL of boiling water, 2.5 mL of ethanol, 1.8 mL of boiling ethanol, 100 mL of ether, and 5.5 mL of glycerol, and is insoluble in benzene, chloroform, and petroleum ether. The pH of a 0.1 mol/L solution is 1.3, the chemical formula is H₂C₂O₄, the relative density is 1.653, and the melting point is 189.5°C. It is present in many foods and is a naturally occurring compound in many fruits, vegetables, nuts, and whole grains. Although small amounts of oxalic acid are harmless, this compound can inhibit the absorption of other important nutrients. Excessive intake of oxalic acid or prolonged skin contact can be dangerous. It easily forms calcium oxalate with calcium ions in the human body, leading to kidney stones, so oxalic acid is often considered an antagonist of mineral absorption and utilization.Basic Info
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Product Name:
Oxalic acid
Other Name:Ethanedioic acid;Oxalic acid;Aktisal;Aquisal;NSC 132055;NSC 151956;NSC 62774;NSC 76990;Ultraplast Activate S 52;DeerClean;Ethanedioic acid,conjugate acid (1:2);63504-28-9;97993-78-7;216451-38-6;2469072-60-2
CAS No.:144-62-7
Molecular Formula:C2H2O4
InChIKeys:InChIKey=MUBZPKHOEPUJKR-UHFFFAOYSA-N
Molecular Weight:90.034
Exact Mass:90.03
EC Number:208-932-1
UNII:9E7R5L6H31
ICSC Number:0529
NSC Number:62774
UN Number:3261|1759
DSSTox ID:DTXSID0025816
Color/Form:ANHYDROUS OXALIC ACID, CRYSTALLIZED FROM GLACIAL ACETIC ACID IS ORTHORHOMBIC, CRYSTALS BEING PYRAMIDAL OR ELONGATED OCTAHEDRA|Colorless powder or granular solid [Note: The anhydrous form (COOH)2 is a white powder].
HScode:2917111000
Categories:
Characteristics-
PSA:
74.6
XLogP3:-0.3
Appearance:Oxalic acid is an odorless white solid. Sinks and mixes with water. (USCG, 1999)
Density:1.9 g/cm3
Melting Point:189.5 °C (decomp)
Boiling Point:200 °C @ Press: 0.1 Torr
Flash Point:188.8±19.7 °C
Refractive Index:1.480
Water Solubility:14%
Storage Conditions:STORE IN COOL, DRY, WELL-VENTILATED LOCATION. /OXALIC ACID DIHYDRATE/
Vapor Pressure:<0.001 mmHg
Vapor Density:4.3
Flammability characteristics:Combustible Solid
Odor:Odorless.
Henrys Law Constant:1.43e-10 atm-m3/mole|Henry's Law constant: 1.4X10-10 atm-cu m/mole at 25 °C (experimental)
Dissociation Constants:pKa 1: 1.46; pKa 2: 4.40
Experimental Properties:MP: 101-102 °C GIVING OFF WATER OF CRYSTALLIZATION & STARTING TO SUBLIME; K1= 5.36X10-2; K2= 5.3X10-5; DENSITY: 1.653 @ 18.5 °C/4 °C; DENSITY OF 1% (WT/WT) AQ SOLN: 1.0035 @ 17.5 °C/4 °C; DENSITY OF 3% (WT/WT) AQ SOLN: 1.0105 @ 17.5 °C/4 °C; DENSITY OF 5% (WT/WT) AQ SOLN: 1.0175 @ 17.5 °C/4 °C; DENSITY OF 10% (WT/WT) AQ SOLN: 1.0350 @ 17.5 °C/4 °C; DENSITY OF 13% (WT/WT) AQ SOLN: 1.0455 @ 17.5 °C/4 °C /OXALIC ACID DIHYDRATE/|DISSOCIATION CONSTANT: 6.5X10-2 /OXALIC ACID DIHYDRATE/|SUBLIMES BEST @ 157 °C; @ HIGHER TEMP DECOMP INTO CO2, CARBON MONOXIDE, FORMIC ACID, & WATER; HYGROSCOPIC|MONOCLINIC TABLETS, PRISMS, OR GRANULES; 1 G DISSOLVES IN 7 ML WATER; 1 G DISSOLVES IN 2 ML BOILING WATER; 1 G DISSOLVES IN 2.5 ML ALCOHOL; 1 G DISSOLVES IN 1.8 ML BOILING ALCOHOL; 1 G DISSOLVES IN 100 ML ETHER; 1 G DISSOLVES IN 5.5 ML GLYCEROL /OXALIC ACID DIHYDRATE/|Transparent, colorless crystals or white powder /Oxalic acid dihydrate/|Odorless /Oxalic acid dihydrate/|For more Other Experimental Properties (Complete) data for OXALIC ACID (6 total), please visit the HSDB record page.
Air and Water Reactions:Water soluble. Hygroscopic
Reactive Group:Acids, Carboxylic
Reactivity Profile:OXALIC ACID is hygroscopic and sensitive to heat. This compound may react violently with furfuryl alcohol, silver, sodium, perchlorate, sodium hypochlorite, strong oxidizers, sodium chlorite, acid chlorides, metals and alkali metals. (NTP, 1992). 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 gases, and inert CO2 gas [Von Bentzinger, R. et al., Praxis Naturwiss. Chem., 1987, 36(8), 41-42].
Autoignition Temperature:Not flammable (USCG, 1999)
Heat of Combustion:-245.61 KJ/mol
Flammable Limits:Combustible Solid
Hazard IdentificationClassification of the substance or mixture
Acute toxicity - Category 4, Oral
Acute toxicity - Category 4, Dermal
GHS label elements, including precautionary statements
Pictogram(s) 
Signal word Warning
Hazard statement(s) H302 Harmful if swallowed
H312 Harmful in contact with skin
Precautionary statement(s) Prevention P264 Wash ... thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
Response P301+P317 IF SWALLOWED: Get medical help.
P330 Rinse mouth.
P302+P352 IF ON SKIN: Wash with plenty of water/...
P317 Get medical help.
P321 Specific treatment (see ... on this label).
P362+P364 Take off contaminated clothing and wash it before reuse.
Storage none
Disposal P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.
Other hazards which do not result in classification
no data available
Handling and StoragePrecautions for safe handling
NO open flames. Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Separated from strong oxidants and food and feedstuffs. Dry. Well closed.STORE IN COOL, DRY, WELL-VENTILATED LOCATION. OXALIC ACID DIHYDRATE
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Seller Information
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Business Type:
Distributor
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Main Products:
CHEMICALS
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Location:
No. 109, Chailu Street, Qingnian Park Subdistrict, Huaian District, Jinan City, Shandong Province 280
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Year of Establishment:
2026
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Inquiry History48 Inquiries
Country Product Purchase Quantity Date Posted 
France
Custom Blend CAS 144-62-7 CAS 65997-17-3 CAS 68081-81-2
400 G May 13, 2026 
India
Oxalic Acid
125.00 KG Feb 26, 2024 
Egypt
Oxalic acid
500.00 MT Aug 26, 2026 
Spain
oxalic acid
1 KG Aug 11, 2026 
Turkey
Oxalic Acid
100 KG Jul 9, 2026 
Malaysia
OXALIC ACID
1400 KG Jun 25, 2026 
Thailand
Oxalic acid 99.6%
1.00 20' Fcl Jun 9, 2026 
Indonesia
oxalic acid
25 MT Jun 3, 2026 
Poland
oxalic acid
1.00 20' Fcl Aug 23, 2025
Egypt
Zinc ash
4.00 BOU May 29, 2025 
United States
OXALIC ACID
1200 MT Apr 19, 2025
India
Oxalic Acid
100 MT Apr 7, 2025 
Pakistan
oxalic acid
1 20' Fcl Mar 24, 2025
India
Oxalic Acid
1 MT Feb 27, 2025 
Vietnam
Oxalic Acid
50 MT Dec 24, 2024
Thailand
Oxalic Acid
10 MT Nov 8, 2024
Malaysia
Oxalid Acid
1 20' Fcl Jul 22, 2024
United States
Oxalic acid
200000 KG Jul 14, 2024
Pakistan
Oxalic acid
5 TON Jun 28, 2024 
Japan
OXALIC ACID
25 MT Jun 24, 2024 Post an enquiry for this product
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