CAS Search
Related Chemical Product
Buy Chemical NO: 144-62-7
  • Urgent Purchase CAS NO.:144-62-7
  • Please post your buying leads! Our suppliers will contact you later!
  • For suppliers to better understand your request, enter more info here.

* Product Name:
CAS No.:
* Quantity:
 
 Metric Ton     Kilogram    Gram    Pound
* Valid For:
 5 Days    15    1 Month    3 Month    6 Month    1 Year
* Description:

Max 2000 characters.  Please enter detailed description for the product.
* Email:
 

Oxalic acid ( CASNO:144-62-7 )

Identification and Related Records
Name:
Oxalic acid
CAS Registry number:
144-62-7
Synonyms:
Ethanedionic acid
Oxalic acid anhydrous
Refined Oxalic Acid
Anhydrous Oxalic Acid
ethanedioic acid
EINECS(EC#):
205-634-3
Molecular Formula:
C2H2O4
Molecular Weight:
90.03
Inchi:
InChI=1/C2H2O4/c3-1(4)2(5)6/h(H,3,4)(H,5,6)
InChIKey:
MUBZPKHOEPUJKR-UHFFFAOYSA-N
Canonical SMILES:
C(=O)(C(=O)O)O
Chemical and Physical Properties
Appearance:
Odorless white solid
Density:
1.9
Melting Point:
189-191℃
Boiling Point:
升华
Vapour:
2.51E-06mmHg at 25°C
Flash Point:
101-157°C
Water:
90 g/L (20℃)
Solubilities:
Water solubility: 90 g/L (20 °C)
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].
Stability:
Stable, but moisture sensitive. Incompatible with metals.
Spectral properties:
IR: 8279 (Sadtler Research Laboratories IR Grating Collection)
NMR: 17060 (Sadtler Research Laboratories Spectral Collection)
MASS: 52 (National Bureau of Standards EPA-NIH Mass Spectra Data Base, NSRDS-NBS-63)
Computed Properties:
Molecular Weight:90.03488 [g/mol]
Molecular Formula:C2H2O4
XLogP3-AA:-0.3
H-Bond Donor:2
H-Bond Acceptor:4
Rotatable Bond Count:1
Exact Mass:89.995309
MonoIsotopic Mass:89.995309
Topological Polar Surface Area:74.6
Heavy Atom Count:6
Formal Charge:0
Complexity:71.5
Isotope Atom Count:0
Defined Atom Stereocenter Count:0
Undefined Atom Stereocenter Count:0
Defined Bond Stereocenter Count:0
Undefined Bond Stereocenter Count:0
Covalently-Bonded Unit Count:1
Feature 3D Acceptor Count:4
Feature 3D Anion Count:2
Effective Rotor Count:1
Conformer Sampling RMSD:0.4
CID Conformer Count:1
Safety and Handling
Hazard Codes:
Xn:Harmful
Risk Statements:
R21/22
Safety Statements:
S24/25
HazardClass:
8
Safety:
Poison by subcutaneous route. Moderately toxic by ingestion. A skin and severe eye irritant. Acute oxalic poisoning results from ingestion of a solution of the acid. There is marked corrosion of the mouth, esophagus, and stomach, with symptoms of vomiting, burning abdominal pain, collapse, and sometimes convulsions. Death may follow quickly. The systemic effects are attributed to the removal by the oxalic acid of the calcium in the blood. The renal tubules become obstructed by the insoluble calcium oxalate, and there is profound kidney disturbance. The chief effects of inhalation of the dusts or vapor are severe irritation of the eyes and upper respiratory tract, gastrointestinal disturbances, albuminuria, gradual loss of weight, increasing weakness and nervous system complaints, ulceration of the mucous membranes of the nose and throat, epistaxis, headache, irritation, and nervousness. Oxalic acid has a caustic action on the skin and may cause dermatitis; a case of early gangrene of the fingers resembling that caused by phenol has been described. More severe cases may show albuminuria, chronic cough, vomiting, pain in the back, and gradual emaciation and weakness. The skin lesions are characterized by cracking and fissuring of the skin and the development of slow-healing ulcers. The skin may be bluish in color, and the nails brittle and yellow. Violent reaction with furfuryl alcohol, Ag, NaClO3, NaOCl. When heated to decomposition it emits acrid smoke and irritating fumes. See also OXALATES.
Hazard Codes:?HarmfulXn
Risk Statements: 21/22-63-34?
R21/22:Harmful in contact with skin and if swallowed.?
R34:Causes burns.?
R63:Possible risk of harm to the unborn child.
Safety Statements: 24/25-23-36/37/39-27-26?
S23:Do not breathe vapour.?
S24/25:Avoid contact with skin and eyes.?
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.?
S27:Take off immediately all contaminated clothing.?
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.
PackingGroup:
III
Skin, Eye, and Respiratory Irritations:
The chief effects of inhalation of the dust or vapor are irritation of the eyes and upper respiratory tract.
Cleanup Methods:
Cover with soda ash or sodium bicarbonate. Mix and add water. Neutralize and drain into a drain with sufficient water.
Transport:
UN 3261
Fire Fighting Procedures:
USE WATER SPRAY, DRY CHEM, "ALC RESISTANT" FOAM, OR CARBON DIOXIDE. DUST MAY BE REDUCED WITH WATER SPRAY. AQUEOUS SOLUTION MUST BE CONTAINED FOR DISPOSAL. USE WATER TO KEEP FIRE-EXPOSED CONTAINERS COOL. WATER MAY CAUSE FOAMING OF MOLTEN MATERIAL. /OXALIC ACID DIHYDRATE/
Formulations/Preparations:
Technical (crystals and powder); chemically pure: a grade designation signifying a minimum of impurities, but not 100% purity.
THE COMMERCIAL PRODUCT IS COMPRISED OF WHITE TO COLORLESS MONOCLINIC PRISMS OR GRANULES CONTAINING 71.42 wt% ANHYDROUS OXALIC ACID AND 28.58 wt% WATER
Reactivities and Incompatibilities:
Reacts with strong alkalies, strong oxidizing materials, chlorites, and hypochlorites. /Oxalic acid dihydrate/
Strong oxidizers, silver compounds, strong alkalis, chlorites [Note: Gives off water of crystallization at 215 degrees F and begins to sublime].
Other Preventative Measures:
Adequate ventilation.
The worker should immediately wash the skin when it becomes contaminated.
Work clothing that becomes wet or significantly contaminated should be removed and replaced.
Workers whose clothing may have become contaminated should change into uncontaminated clothing before leaving the work premises.
SRP: Contaminated protective clothing should be segregated in such a manner so that there is no direct personal contact by personnel who handle, dispose, or clean the clothing. Quality assurance to ascertain the completeness of the cleaning procedures should be implemented before the decontaminated protective clothing is returned for reuse by the workers. Contaminated clothing should not be taken home at end of shift, but should remain at employee's place of work for cleaning.
SRP: The scientific literature for the use of contact lenses in industry is conflicting. The benefit or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place.
Protective Equipment and Clothing:
... EYE & SKIN PROTECTION /MUST/ BE PROVIDED FOR PERSONS WORKING WITH OXALIC ACID.
Wear special protective clothing and positive pressure self-contained breathing apparatus. /Oxalic acid dihydrate/
If mists of oxalic acid should be encountered from hot solutions ... adequate ventilation should be provided or proper respiratory protective devices worn.
Respirator for dust or mist protection; rubber, neoprene, or vinyl gloves; chemical safety glasses; rubbers, over leather or rubber safety shoes; apron or impervious clothing for splash protection.
Wear appropriate personal protective clothing to prevent skin contact.
Wear appropriate eye protection to prevent eye contact.
Eyewash fountains should be provided in areas where there is any possibility that workers could be exposed to the substance; this is irrespective of the recommendation involving the wearing of eye protection.
Recommendations for respirator selection. Max concn for use: 25 mg/cu m. Respirator Class(es): Any supplied-air respirator operated in a continuous flow mode. Eye protection needed. Any powered, air-purifying respirator with a dust and mist filter. Eye protection needed.
Recommendations for respirator selection. Max concn for use: 50 mg/cu m. Respirator Class(es): Any air-purifying, full-facepiece respirator with a high-efficiency particulate filter. Any self-contained breathing apparatus with a full facepiece. Any supplied-air respirator with a full facepiece.
Recommendations for respirator selection. Max concn for use: 500 mg/cu m. Respirator Class(es): Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode.
Recommendations for respirator selection. Condition: Emergency or planned entry into unknown concn or IDLH conditions: Respirator Class(es): Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode. Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained breathing apparatus operated in pressure-demand or other positive-pressure mode.
Recommendations for respirator selection. Condition: Escape from suddenly occurring respiratory hazards: Respirator Class(es): Any air-purifying, full-facepiece respirator with a high-efficiency particulate filter. Any appropriate escape-type, self-contained breathing apparatus.
Specification:
?Oxalic acid , its cas register number is 144-62-7. It also can be called Ethanedionic acid ; and Oxalic acid anhydrous . It is hazardous, so the first aid measures and others should be known. Such as: When on the skin: first, should flush skin with plenty of water immediately for at least 15 minutes while removing contaminated clothing. Secondly, get medical aid. Or in the eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Then get medical aid soon. While, it's inhaled: Remove from exposure and move to fresh air immediately. Give artificial respiration while not breathing. When breathing is difficult, give oxygen. And as soon as to get medical aid. Then you have the ingesting of the product: If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately. Notes to physician: Treat supportively and symptomatically.
In addition, Oxalic acid (CAS NO.144-62-7)?absorbs moisture or water from the air. It is not compatible with?Metals, strong oxidizing agents, strong bases, acid chlorides, sodium hypochlorite, steel, mercury, silver, sodium chloride, chlorites, and you must not take it with incompatible materials. And also prevent it to broken down into hazardous decomposition products:?formic acid, carbon monoxide, carbon dioxide.
Report:
Reported in EPA TSCA Inventory.
Disposal Methods:
Oxalic acid is a waste chemical stream constituent which may be subjected to ultimate disposal by controlled incineration. Pretreatment involves chemical reaction with limestone or calcium oxide forming calcium oxalate. This may then be incinerated utilizing particulate collection equipment to collect calcium oxide for recycling.
Use and Manufacturing
Use and Manufacturing:
Methods of Manufacturing

MADE BY PASSING CARBON MONOXIDE INTO CONCENTRATED SODIUM HYDROXIDE OR BY HEATING SODIUM FORMATE IN PRESENCE OF SODIUM HYDROXIDE OR SODIUM CARBONATE.
OXALIC ACID IS PRODUCED COMMERCIALLY BY NITRIC ACID OXIDATION OF STARCH, SUGAR, OR ETHYLENE GLYCOL
OXALIC ACID IS A CO-PRODUCT OF THE FERMENTATION OF MOLASSES TO CITRIC ACID. OXALIC ACID CAN BE MADE BY FUSING SAWDUST (OR OTHER FORMS OF CELLULOSE) WITH A MIXTURE OF SODIUM HYDROXIDE AND POTASSIUM HYDROXIDE. TEXACO WAS GRANTED A PATENT IN 1973 FOR THE ELECTROLYTIC SYNTHESIS OF OXALIC ACID FROM CARBON DIOXIDE AND HYDROGEN.
U.S. Exports

(1972) NEGLIGIBLE
1.68X10+8 g
U.S. Imports

(1972) 8.6X10+8 G
(1975) 1.73X10+9 G
(1984) 9.31X10+9 g
U.S. Production

(1972) 1.0X10+10 G
(1974) 8.17X10+9 G
(1982) 9.08X10+8 G (EST)
Consumption Patterns

27% FOR TEXTILE FINISHING, STRIPPING AND CLEANING; 27% FOR METAL AND EQUIPMENT CLEANING; 25% AS A CHEMICAL INTERMEDIATE; 2% FOR LEATHER TANNING; 19% FOR MISC APPLICATIONS (1971)
33% FOR TEXTILE /APPLICATIONS/; 20% FOR METAL; 7% FOR LEATHER; 20% FOR OXALATES; AND 20% FOR OTHER USE (1983)
Biomedical Effects and Toxicity
Pharmacological Action:
- Materials that add an electron to an element or compound, that is, decrease the positiveness of its valence. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)
Biomedical Effects and Toxicity:
TARTARIC & OXALIC ACIDS ARE EXCRETED IN URINE UNCHANGED.
The absorption of (14)C-labelled oxalic acid was studied in Wistar rats, CD-1 mice and NMRI mice. Oxalic acid in solution was given to the animals by gavage either with water alone or with 0.625 g/kg body wt of xylitol. Both xylitol adapted animals and animals not previously exposed to xylitol were used. Adaptation to xylitol diets enhanced the absorption and urinary excretion of the label (oxalic acid) in both strains of mice but not in rats. Earlier studies have indicated a high incidence of bladder calculi in mice but not in rats fed high amounts of xylitol. The results of the present study offer one likely explanation for the increased formation of bladder calculi as a result of over saturation of urine with oxalate. [Salminen S et al; Toxicol Lett 44 (1-2): 113-20 (1988)] PubMed Abstract
Environmental Fate and Exposure Potential
Environmental Fate/Exposure Summary:
TERRESTRIAL FATE: An estimated Koc value of 5(1,SRC) for oxalic acid indicates high mobility in soil(2) and oxalic acid has been detected in groundwater(3). Volatilization from moist soils is not expected to be rapid based upon a low Henry's Law constant. Several screening studies indicate rapid biodegradation of oxalic acid(4-8). Although these studies are not specific to soil media, they suggest that oxalic acid will readily biodegrade in soil. The oxalic acid concn in another study was determined to decrease from 30 mg/kg on a soil surface to about 6 mg/kg 540 cm below the soil surface(3) which suggests that biodegradation may have occurred(SRC). Photolysis is expected to be an important terrestrial fate process; the daytime persistence of oxalic acid on soil surfaces is not expected to exceed a few hours(9).
AQUATIC FATE: Several screening studies(4-8) and grab sample tests(9) indicate that under aerobic and anaerobic conditions, oxalic acid will readily biodegrade in aquatic ecosystems. Based on an experimental Henry's Law constant of 1.4X10-10 atm-cu m/mole at 25 deg C(2), oxalic acid is expected to be essentially nonvolatile from water(1). Adsorption to sediment and bioconcentration in aquatic organisms may not be important fate processes for oxalic acid in water systems. Based on pKa1 and pKa2 values of 1.25 and 4.28(3), respectively, oxalic acid will exist primarily as the oxalate ion under environmental conditions (pH 5-9,SRC). Aquatic oxidation is not likely to be an important fate process based on a half-life of 285 yrs in water under continuous sunlight(3,SRC). Oxalic acid may react slowly in water with photochemically produced OH radicals, but it is expected to be removed rapidly from surface water by direct photolysis; the daytime persistence of oxalic acid is not expected to exceed a few hours(10).
ATMOSPHERIC FATE: Based on a measured vapor pressure of 2.3410-4 mm Hg at 25 deg C(2), oxalic acid is expected to exist almost entirely in the vapor phase in the ambient atmosphere(3). In the vapor phase, oxalic acid in the ambient atmosphere is very slowly degraded by reaction with photochemically formed hydroxyl radicals; the half-life for this reaction in air can be estimated to be about 223 days(1). Oxalic acid in the ambient atmosphere may react slowly with OH radicals, but it is removed rapidly by photolysis; the daytime persistence of oxalic acid is not expected to exceed a few hours(4). Based on its high water solubility, removal from air via wet deposition is likely to occur(4,SRC). Oxalic acid may also be removed from air via dry deposition with 11% of the total deposition being dry deposition(4).
Chemical Company
SHANDONG IRO Oil Drilling Chemical Co., Ltd:
IRO Oil Drilling mainly has got the following annual production capacity: 3,000MT biocides, 4,000MT brines, 10,000MT viscosifiers. Its turnover achieves approximately 400million RMB in 2011 (roughly 63million USD).While taking pleasure in the recognition and recognition from your worldwide clients, we're keeping our passion in this subject. With the fact that mutual benefits would be the very first step toward business, hopefully to offer the cooperation along with you.  
Hemlin Chemicals:
Hemlin Chemicals started around 1994. We're situated in the middle of the Indian Business Center - Bombay. Inside a short length of five years Hemlin Chemicals has entered a turnover of Rs. 50 Million. Hemlin Chemicals is outfitted with qualified and passionate work pressure and condition of art it. We've adopted the task to network the field of Pharma. Keeping pace with this customer's needs, Hemlin Chemicals has varied into an array of items: 1. Pharmaceutical drugs 2. Intermediates 3. Veterinary Items 4. essential oils & Oleoresins 5. Phyto Chemicals & Phyto Chemical Intermediates 6. natural ingredients 7. Polyester & Textile Industry Drugs At, Hemlin Chemicals, Growth is really a Life-style! 
Twin International Co., Limited:
 Twin Worldwide,one of the biggest manufacturer and exporter of water treatment chemicals and medicine intermediatesfor example: Aluminum Chlorohydrate(ACH),Proteins,KBR,SMFP,ATMP,SAP,PAA,AA/Amplifiers,Plant extract oils(TTO),TDI 80/20,ETC. Our company located in famous maritime Centre and financial Centre- Shanghai,China.  Why Twin??? . TOP 10 Chemical enterprises in China  . Over 12 years of experience  . Wholly possessed production plant(1500 square meters) . Sales to more than 76 countries  . 10 main products with competitive 
Tianjin Bangtai Chemicals Co.,Ltd:
 
everlop import & export co., ltd:
 
Creasyn Finechem(Tianjin) Co., Ltd.:
 
Yueqing RHI Electric Co.,Ltd:
RHI Electric Co., Ltd is speciallized on the production and R&D of soft PVC dipping cover and new energy battery connection accessories. The company began producing all kinds of soft PVC dipping products in 1991,Website:http://www.rhi-global.com, established a new energy department in 2013 , and is supplying connection system products for more than 1,000 new energy enterprises now . All products reach the EU ROHS /REACH environmental standards, and electrical products reach UL94V-0 flame retardant requirements. We are certified by the ISO9001 international quality management system in 2016. Our products is various with PVC dipping series such as cable terminal covers, wiring harness connector covers, end caps, battery positive and negative protective covers, cable sheathing, metal protecti 
Tianjin DEK Chemical Co., Ltd:
 
Qufu Guanglong Biochemical Factory:
 Like a China quality supplier,Qufu GuangLong Biochemical Factory has grown to become a number one exporter of cosmetic surgery items,hyaluronic acidity filler,pharmaceutical recycleables, fine chemicals, clinical chemistry reagents,botbotanical extracts and Animal Extracts, we're focused on product research,manufacturing , marketing active components rich in bio-activity and safety. With higher control over employees and Professional technical pressure, the organization has received a properly-structured and efficient system for production and sales to satisfy the client's needs. We establish stable and cooperative associations with bio-pharmaceutical companies, research departments, health food and cosmetics industries both domestic and Overseas. Our items export to U . s . Sta 
Zhejiang Hisoar Pharm.Co., Ltd.:
 
Shenzhen Weihong Technology Co., Ltd.:
Established in 2003,Website:http://www.chinashowlisss.com, our company is a professional highly qualified manufacturer, specializing in the research & development, manufacturing and marketing of hair and facial salon equipment and kitchen appliances: hair curler, hair straightener, hair dryer, hair brush, eggs cooker, facial brush, headphones and so on,which are well received by our customers. We hold the belief: the highest quality, the fastest response, the best service; Your satisfaction, our pursuit. We accept wholesale, retail and OEM. If you have any inquiry about beauty and kitchen appliances products, you can also send us a photo or sample, we'll quote you the best price 
JINHUA COOFIXTOOLS I&E CO.,LTD:
JINHUA COOFIXTOOLS I&E CO.,LTD is one of leading manufacturers and treading company in China's tool industries,Website:http://www.coofixgroup.com, Such as power tools ,cordless tools ,garden tools, air tools, hand tools. Most kind of power tools best sales all over world , such as Electric Drill,ANGLE GRINDER,SCREWDRIVER,IMPACT DRILL ,ELECTRIC PLANER,CUT-OFF MACHINE ,MITER SAW,ROTARL HAMMER,DEMOLITION HAMMER ,ELECTRIC BLOWER ,CIRCULAR SAW 
TAT Electroncis Co.,Ltd PQ:
Specialized in micro acoustic products ,Website:http://www.rcdelec.asia, TAT Electronics has been developing into an outstanding company within last 15years .Located in the southeast of China ,she has worldwide customers from USA,Korea,Israel ,German and some other countries.There are many products in TAT,such as mylar speaker,buzzer,receiver ,microphone ,alarms and so on .the products are applied in various fields of computer ,communication product ,electronic digital product and electronic accessory ,medical facility ,electronic toys and safety alarm . With the development of domestic electron industry , TAT company has been deepening cooperation with the varied electron industry . Nowadays TAT can be seen in mobile ,MP3/MP4 ,PDA and so on . 
Beijing Kangbo Luyuan Chemical Co., Ltd.:
 
Zhengzhou Domorechem Co., Ltd.:
DOMORECHEM,A professional producer and exporter in neuro-scientific Benzoyl Peroxide series and related goods for example n,N-Dimethylaniline!Location: zhengzhou, China Leader in: Benzoyl Peroxide series and related goods Items including: Benzoyl Peroxide 75% Granule, Benzoyl Peroxide 50% Powder, Acetyl acetone, n,N-Dimethyl-P-Toluidine, n,N-Dimethylaniline, methyl ethyl ketone, Tert-Butyl Peroxybenzoate, Dicyclohexyl Phthalate, n,N-Diethyl Aniline 
BIRMINGHAM:
 
Beijing Rundeyongfa Chemical Products Co., Ltd:
 
Xingcheng Chemphar Co.,Ltd.:
 
Shenyang Huijinfengda Chemical Co., Ltd.:
   
Sun Colour Industries Group Ltd: