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Calcium oxalate

Calcium oxalate
Calcium oxalate structure
Chemical Name:
Calcium oxalate
RAPHIDES;CALCIUM OXALATE;Oxalic acid calcium;calcium ethanedioate;Calciumoxalat-1-hydrat;Ethanedioic acid,calcium salt ;Ethanedioicacid,calciumsalt(1:1);Calcium oxalate 99.999% metals basis;Calcium oxalate >=99.9% trace metals basis;Calcium oxalate 99.999% trace metals basis
Molecular Formula:
Formula Weight:
MOL File:

Calcium oxalate Properties

Melting point:
decomposes [CRC10]
2.2 g/mL at 25 °C(lit.)
Water Solubility 
g/L solution H2O: 0.0069 (25°C), 0.0142 (95°C); solid phase, CaC2O4 ·H2O [KRU93]; soluble dilute HCl, HNO3 [HAW93]
Stable. Incompatible with strong oxidizing agents.
CAS DataBase Reference
563-72-4(CAS DataBase Reference)
EPA Substance Registry System
Ethanedioic acid, calcium salt (1:1)(563-72-4)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  Xn
Risk Statements  20/21/22-36/37/38-21/22
Safety Statements  26-37/39-24/25
WGK Germany  3
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H312 Harmful in contact with skin Acute toxicity,dermal Category 4 Warning P280,P302+P352, P312, P322, P363,P501
Precautionary statements:
P280 Wear protective gloves/protective clothing/eye protection/face protection.

Calcium oxalate price More Price(1)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 455997 Calcium oxalate ≥99.9% trace metals basis 563-72-4 5g $55.3 2018-11-13 Buy

Calcium oxalate Chemical Properties,Uses,Production


Calcium oxalate (in archaic terminology, oxalate of lime) is a chemical compound that forms envelope-shaped crystals, known in plants as raphides. A major constituent of human kidney stones, the chemical is also found in beerstone, a scale that forms on containers used in breweries. Its chemical formula is CaC2O4 or Ca (COO)2.

Chemical Properties

colourless crystals

Physical properties

Most crystals look like a 6 sided prism and often look like a pointed picket from a wooden fence. More than 90 % of the crystals in a urine sediment will have this type of morphology. These other shapes are less common than the 6 sided prism, however it is important to be able to quickly identify them in case of emergency.


Many plants are accumulating calcium oxalate (it has been reported in 1000 genera of tree ). The calcium oxalate accumulation is linked to the detoxification of calcium (Ca2+) in the plant.
Calcium oxalate is a poisonous substance that can produce sores and numbing on ingestion and could even be fatal.
The poisonous plant dumb cane (Dieffenbachia) contains the substance and on ingestion can prevent speech and be suffocating. It is also found in rhubarb (in large quantities in the leaves) and in species of Oxalis, Araceae, taro, kiwifruit, tea leaves, agaves, and Alocasia and in spinach in varying amounts. Insoluble calcium oxalate crystals are found in plant stems, roots, and leaves and produced in idioblasts. Calcium oxalate, as ' beer stone ', is a brownish precipitate that tends to accumulate within vats, barrels and other containers used in the brewing of beer.


Calcium oxalate is used in the manufacture of ceramic glazes.


ChEBI: The calcium salt of oxalic acid, which in excess in the urine may lead to formation of oxalate calculi (kidney stones).

Health Hazard

Even a small dose of calcium oxalate is enough to cause intense sensations of burning in the mouth and throat, swelling, and choking that could last for up to two weeks . In greater doses it can cause severe digestive upset, breathing difficulties, coma or even death. Recovery from severe oxalate poisoning is possible, but permanent liver and kidney damage may have occurred.
The stalks of plants in the Dieffenbachia genus produce the most severe oxalate reactions. The needle - like oxalate crystals produce pain and swelling when they contact lips, tongue, oral mucosa, conjunctiva, or skin. Edema primarily is due to direct trauma from the needle-like crystals and, to a lesser extent, by other plant toxins (e.g., bradykinins, enzymes).
Depending on the plant ingested, mild (Elephant Ear Colocasia esculenta) to more severe (Jack in the Pulpit, Arisaema) can cause compromised airways. One bite on the Arisaema seed pod will result in immediate swelling and burning. It will take over 12 hours for the swelling to subside .
4 – 1 - Treatment
Medication administered at the emergency room may include diphenhydramine, epinephrine, or famotidine, all intravenously. Although this most likely will be a localized reaction, it will be treated by the ER as an anaphylactic reaction.

Calcium oxalate Preparation Products And Raw materials

Raw materials

Preparation Products

Calcium oxalate Suppliers

Global( 88)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32452 55
career henan chemical co
+86-371-86658258 CHINA 25796 58
Chemwill Asia Co.,Ltd.
86-21-51861608;;; CHINA 23957 58
Hubei Jusheng Technology Co.,Ltd.
86-188-71490254 CHINA 20084 58
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 China 30168 84
BeiJing Hwrk Chemicals Limted 4006990298;010-57411839;0757-86311057;021-51691807
010-87653215;0757-86311057;021-55236763 China 14686 55
Adamas Reagent, Ltd. 400-600-9262 China 13922 59
Chengdu XiYa Chemical Technology Co., Ltd. 4008-626-111
028-84752058 China 9634 57
Tianjin heowns Biochemical Technology Co., Ltd. 400 638 7771 China 14463 57
T&W GROUP +86-21-61551611, 61551462, 61551420, 61551610
+86-21-50676805 China 9705 58

View Lastest Price from Calcium oxalate manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2019-07-10 Calcium oxalate
US $1.00 / KG 1KG 99% 25kg career henan chemical co

Calcium oxalate Spectrum

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