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CALCIUM CARBONATE

CALCIUM CARBONATE
CALCIUM CARBONATE structure
CAS No.
1317-65-3
Chemical Name:
CALCIUM CARBONATE
Synonyms
CHALK;WHITING;CALCITE;Agstone;KALKSPAR;domolite;franklin;ARAGONITE;flux lime;MARBLEDUST
CBNumber:
CB2356871
Molecular Formula:
CCaO3
Formula Weight:
100.09
MOL File:
1317-65-3.mol

CALCIUM CARBONATE Properties

Melting point:
825 °C
Boiling point:
2850 °C
Density 
2.93 g/mL at 25 °C(lit.)
solubility 
5 M HCl: 0.1 M at 20 °C, clear, colorless
form 
random crystals
color 
Gray
Solubility Product Constant (Ksp)
pKsp: 8.47
CAS DataBase Reference
1317-65-3(CAS DataBase Reference)
FDA 21 CFR
184.1409
EWG's Food Scores
1
EPA Substance Registry System
Limestone (1317-65-3)
SAFETY
  • Risk and Safety Statements
Hazard Codes  Xi
Risk Statements  37/38-41
Safety Statements  26-36/37/39
WGK Germany  -
RTECS  FF9335000
NFPA 704
0
1 0

CALCIUM CARBONATE Chemical Properties,Uses,Production

Description

Calcite is one of the most common minerals on the face of the earth, comprising about 4% by weight of the earth’s crust and is formed in many different geological environments. Calcite can form rocks of considerable mass and constitutes a significant part of all three major rock classification types. It forms oolitic, fossiliferous and massive limestones in sedimentary environments and even serves as the internal cement for many sandstones and shales.Calcite is even a major component in the igneous rock called carbonatite and forms the major portion of many hydrothermal veins. Not necessarily a variety of calcite, cave formations are certainly a unique aspect of calcite’s story.

Chemical Properties

Ground limestone consists essentially of calcium carbonate. It is obtained by crushing, grinding, and classifying naturally occurring limestone benefited by flotation and/or air classification. It is pro duced as a fine, white to off-white, microcrystalline powder. It is odorless and tasteless and is stable in air. It is practically insoluble in water and in alcohol. The presence of any ammonium salt or carbon dioxide increases its solubility in water, but the presence of any alkali hydroxide reduces the solubility.

Chemical Properties

Calcium carbonate is a white, odorless powder, or crystalline solid.

Uses

Source of lime; neutralizing agent, filler, and extender in rubber, plastics, paints; opacifying agent in paper; fortification of bread; putty; tooth pow- ders; antacid; whitewash; Portland cement; sulfur dioxide removal from stack gases; metallurgical flux; analytical chemistry; carbon dioxide gener- ation (laboratory).

Uses

Calcite is the primary mineral component in cave formations. Stalactites and stalagmites, cave veils, cave pearls, “soda straws” and the many other different cave formations that millions of visitors to underground caverns enjoy are made of calcite.

Uses

Manufacture of quicklime, Portland cement, and paints. United States Pharmacopeia (USP) grades are used in dentifrices, cosmetics, food, and pharmaceuticals such as antacids.

Preparation

The calcite present is derived mostly from the remains of organisms such as clams, brachiopods, bryozoa, crinoids and corals. These animals live on the bottom of the sea and when they die their shells accumulate into piles of shelly debris. This debris can then form beds of limestone. Some limestones may have been derived from nonbiogenic calcite formation.

Definition

Aragonite: An anhydrous mineral form of calcium carbonate, CaCO3, which occurs associated with limestone and in some metamorphic rocks. It is also the main ingredient of pearls. It is not as stable as calcite, into which it may change over time.
Calcite:A mineral form of calcium carbonate occurring in limestone, chalk, and marble.
Charlk: A natural form of calcium carbonate (CaCO3) formed originally by marine organisms. (Blackboard chalk is calcium sulfate, CaSO4.).

General Description

Odorless, white to tan powder.

Reactivity Profile

CALCIUM CARBONATE has generally low chemical reactivity. Is non-combustible. Decomposes at high temperature (825°C) to give gaseous carbon dioxide and calcium oxide (quicklime). Incompatible with acids, alum, ammonium salts, fluorine, magnesium. Reacts with acids and acidic salts to generate gaseous carbon dioxide with effervescence (bubbling). The reaction is rapid and exothermic with concentrated solutions of acids. The efferversence can create extensive foaming. Ignites on contact with fluorine.

Hazard

A nuisance particulate dust.

Health Hazard

Calcium carbonate is considered to be a nuisance dust.
Although no adverse effects have been reported in the literature among workers exposed to calcium carbonate, high concentrations of the dust would be expected to act as a physical irritant to the eyes and skin.1 Fourteen British workers exposed to heavy calcium carbonate concentrations for 12–35 years showed no trace abnormalities due to dust or any clinical sign of pneumoconiosis or chronic bronchitis on X ray.2 Long exposure to high dust concentrations of pure calcium carbonate (quartz content less than 1.1%) did not result in lung fibrosis.

Agricultural Uses

Limestone or dolomite, used in agriculture for liming the soil, is ground to a fineness to ensure that 50% of the particles pass through a 1.70mm Indian Standards (IS) sieve, and 50% is retained on a 150micron IS sieve.

Safety Profile

A nuisance dust. An eye and skin irritant. Igmtes on contact with F2. Incompatible with acids, ammonium salts, (Mg + H2). Calcium carbonate is a common air contaminant. See also CALCIUM COMPOUNDS.

Potential Exposure

Calcium carbonate is used as a source of lime; neutralizing agent; manufacturing or rubber, plastics, paint and coatings; sealants, paper, dentifrices, ceramics, putty, polishes and cleaners, insecticides, inks and cosmetics; whitewash; Portland cement; antacids; analytical chemistry, and others

Incompatibilities

Calcium carbonate decomposes in high temperature forming carbon dioxide and corrosive materials

Waste Disposal

Landfills. It is the responsibility of chemical waste generators to determine if a discarded chemical is classified as a hazardous waste. See 40 CFR Parts 261.3 for United States Environmental Protection Agency guidelines for the classification determination. In addition, in order to ensure complete and accurate classification, waste generators must consult state and local hazardous waste regulations.

CALCIUM CARBONATE Preparation Products And Raw materials

Raw materials

Preparation Products


CALCIUM CARBONATE Suppliers

Global( 100)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 22607 55
Hubei Jusheng Technology Co.,Ltd.
86-18871470254
027-59599243 linda@hubeijusheng.com CHINA 28229 58
Hebei Guanlang Biotechnology Co., Ltd.
+8619930503282
sales3@crovellbio.com China 5450 58
Shanghai Longyu Biotechnology Co., Ltd.
+8615821988213
info@longyupharma.com CHINA 2462 58
Wuhan Mulei New Material Technology Co. Ltd
WhatsApp:+8619831950597
Telegram/wickr: jane8886 CHINA 1001 58
Hebei Qige Biological Technology Co. Ltd
8618733132031
qige01@hbqige.com CHINA 1159 58
Wuhan wingroup Pharmaceutical Co., Ltd
0086-18062075862
0086-27-87819568 admin@whwingroup.com CHINA 2481 58
Mainchem Co., Ltd. +86-0592-6210733
+86-0592-6210733 sale@mainchem.com CHINA 32439 55
Chemwill Asia Co.,Ltd. 86-21-51086038
86-21-51861608 chemwill_asia@126.com;sales@chemwill.com;chemwill@hotmail.com;chemwill@gmail.com CHINA 23975 58
3B Pharmachem (Wuhan) International Co.,Ltd. 18930552037 821-50328103-801
86-21-50328109 3bsc@sina.com China 15877 69

View Lastest Price from CALCIUM CARBONATE manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2021-10-20 99% purity CALCIUM CARBONATE
1317-65-3
US $5.00 / KG 1KG 99% 100 TONS Wuhan wingroup Pharmaceutical Co., Ltd
2021-09-07 wollastonite
1317-65-3
US $0.00 / Kg/Drum 1KG 99.9% 100000kg per month Wuhan Mulei New Material Technology Co. Ltd

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