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Oxalic acid dihydrate

Oxalic acid dihydrate Structure
Oxalic acid dihydrate
  • CAS No.6153-56-6
  • Chemical Name:Oxalic acid dihydrate
  • CBNumber:CB1303757
  • Molecular Formula:C2H6O6
  • Formula Weight:126.07
  • MOL File:6153-56-6.mol
Oxalic acid dihydrate Property
  • Melting point: :104-106 °C(lit.)
  • Boiling point: :108-109°C
  • Density  :1,65 g/cm3
  • vapor density  :4.4 (vs air)
  • vapor pressure  :<0.01 mm Hg ( 20 °C)
  • Flash point: :157°C
  • storage temp.  :Store at RT.
  • solubility  :H2O: soluble1M at 20°C, clear, colorless
  • form  :Powder/Solid
  • color  :Yellow to yellow-green
  • Specific Gravity :1.65
  • PH :~1.0 (25℃, 1M in H2O)
  • PH Range :6 - 8 at 25 °C
  • Water Solubility  :138 g/L (20 ºC)
  • Sublimation  :157 ºC
  • Merck  :14,6911
  • BRN  :3679436
  • Exposure limits :TLV-TWA for anhydrous acid 1 mg/m3 (ACGIH, MSHA, and OSHA); TLV-STEL 2 mg/m3 (ACGIH).
  • Stability: :Stable. Incompatible with bases, acid chlorides, steel, silver, silver compounds, moisture. Avoid contact with metals.
  • InChIKey :GEVPUGOOGXGPIO-UHFFFAOYSA-N
  • CAS DataBase Reference :6153-56-6(CAS DataBase Reference)
  • FDA UNII :0K2L2IJ59O
  • NIST Chemistry Reference :Oxalic acid dihydrate(6153-56-6)
  • EPA Substance Registry System :Oxalic acid dihydrate (6153-56-6)
Safety
  • Hazard Codes  :Xn,C
  • Risk Statements  :21/22-41
  • Safety Statements  :24/25-39-37-36-26
  • RIDADR  :UN 3261 8/PG 3
  • WGK Germany  :1
  • RTECS  :RO2450000
  • TSCA  :Yes
  • HazardClass  :8
  • PackingGroup  :III
  • HS Code  :29171100
  • Toxicity :LD50 orally in Rabbit: 375 mg/kg
  • NFPA 704:
    1
    2 0
Hazard and Precautionary Statements (GHS)
  • Symbol(GHS)
  • Signal wordDanger
  • Hazard statements H302-H312-H302+H312-H318
  • Precautionary statements P301+P312a-P310a-P321-P501a-P280-P301+P312+P330-P305+P351+P338+P310-P305+P351+P338
Oxalic acid dihydrate Price More Price(37)
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  • Product name : Oxalic acid dihydrate
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  • Product name : Oxaliplatin Related Compound A
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  • Product name : Oxalic acid dihydrate, ACS, 99.5-102.5%
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  • Product name : Oxalic acid dihydrate, ACS, 99.5-102.5%
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  • Product name : Oxalic acid dihydrate
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Oxalic acid dihydrate Chemical Properties,Usage,Production

  • Chemical Properties white crystals
  • Uses Oxalic acid dihydrate is a purifying agent in pharmaceutical industry, special in antibiotic medication, such as Oxytetracycline , Chloramphenicol , etc; * Precipitating agent in Rare-earth mineral processing; * Bleaching agent in the textile activities, wood pulp bleaching; * Rust-remover for Metal treatment; * Grinding agent, such as Marble polishing; * Waste water treatment, removing calcium from water.
  • Uses A diprotic reducing agent used as a buffer.
  • Uses Oxalic acid occurs in the cell sap of Oxalisand Rumex species of plants as the potassium and calcium salt. It is the metabolicproduct of many molds (Merck 1989). Thereare a large number of applications of thiscompound, including indigo dyeing; calicoprinting; removal of paint, rust, and inkstains; metal polishing; bleaching leather; inpesticide compositions and manufacture ofoxalates. It is also used as an analyticalreagent and as a reducing agent in organicsynthesis.
    Addition of oxalic acid to chromic acid forthe anodizing of Al alloy has been reported tomodify the morphology and improve the corrosion performance of anodic films (Moutarlier et al. 2004). Also, it is a very effectiveadditive for the ozone treatment of cellulose.It prevents the degradation of cellulose fromozone bleaching.
  • Reactivity Profile At high temperatures oxalic acid decomposes, producing toxic carbon monoxide, andformic acid. Mixing with warm sulfuric acidmay produce the same products: CO2, CO,and formic acid. It reacts with many silvercompounds, forming explosive silver oxalate(NFPA 1986). An explosion occurred whenwater was added to an oxalic acid/sodiumchlorite mixture in a stainless steel beaker.There was also evolution of highly toxicchlorine dioxide gas (MCA 1962). Oxalicacid reacts violently with strong oxidizingsubstances.
  • Health Hazard Oxalic acid is a strong poison. The toxicsymptoms from ingestion include vomiting, diarrhea, and severe gastrointestinaldisorder, renal damage, shock, convulsions,and coma. Death may result from cardiovascular collapse. The toxicity arises asoxalic acid reacts with calcium in the tissuesto form calcium oxalate, thereby upsettingthe calcium/potassium ratio (ACGIH 1986).Deposition of oxalates in the kidney tubulesmay result in kidney damage (Hodgson et al.1988).
    Oxalic acid may be absorbed into the bodythrough skin contact. It is corrosive to theskin and eyes, producing burns. Dilute solutions of 10% strength may be a mild irritantto human skin. However, the inhalation toxicity is low because of its low vapor pressure.Airborne dusts can produce eyeburn and irritation of the respiratory tract.
    LD50 value, oral (rats): 375 mg/kg.
  • Purification Methods Crystallise oxalic acid from distilled water. Dry it in a vacuum over H2SO4. The anhydrous acid can be obtained by drying at 100o overnight. [Beilstein 2 IV 1819.]
Oxalic acid dihydrate Preparation Products And Raw materials
Raw materials
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