calcium carbonate
carbonic acid, calcium salt (1:1)
 
Notes:
carbonic acid calcium salt (caco3). an odorless, tasteless powder or crystal that occurs in nature. it is used therapeutically as a phosphate buffer in hemodialysis patients and as a calcium supplement. Used in foods as a neutraliser and leavening agent Calcination of limestone using charcoal fires to produce quicklime has been practiced since antiquity by cultures all over the world. The temperature at which limestone yields calcium oxide is usually given as 825 ░C, but stating an absolute threshold is misleading. Calcium carbonate exists in equilibrium with calcium oxide and carbon dioxide at any temperature. At each temperature there is a partial pressure of carbon dioxide that is in equilibrium with calcium carbonate. At room temperature the equilibrium overwhelmingly favors calcium carbonate, because the equilibrium CO2 pressure is only a tiny fraction of the partial CO2 pressure in air, which is about 0.035 kPa.; Calcium carbonate is a chemical compound with the chemical formula CaCO3. It is a common substance found in rock in all parts of the world, and is the main component of shells of marine organisms, snails, pearls, and eggshells. Calcium carbonate is the active ingredient in agricultural lime, and is usually the principal cause of hard water. It is commonly used medicinally as a calcium supplement or as an antacid, but high consumption can be hazardous.; Calcium carbonate is also one of the main sources used in growing Seacrete, or Biorock.; Calcium carbonate is used in the production of toothpaste and is also used in homeopathy as one of the constitutional remedies.; Fine ground calcium carbonate is an essential ingredient in the microporous film used in babies' diapers and some building films as the pores are nucleated around the calcium carbonate particles during the manufacture of the film by biaxial stretching.; We see that for the same total acid concentration, the initial pH of the weak acid is less acid than the one of the strong acid; however, the maximum amount of CaCO3 which can be dissolved is approximately the same. This is because in the final state, the pH is larger that the pKA, so that the weak acid is almost completely dissociated, yielding in the end as many H+ ions as the strong acid to "dissolve" the calcium carbonate.
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calcium carbonate (Click)
CAS Number: 471-34-1Picture of molecule
Other: 114453-69-9
ECHA EINECS - REACH Pre-Reg: 207-439-9
FDA UNII: H0G9379FGK
Nikkaji Web: J404I
Beilstein Number: 8008338
MDL: MFCD00010906
Molecular Weight: 100.08660000
Formula: C Ca O3
NMR Predictor: Predict (works with chrome or firefox)
Category: multipurpose additives
 
US / EU / FDA / JECFA / FEMA / FLAVIS / Scholar / Patent Information:
Google Scholar: Search
Google Books: Search
Google Scholar: with word "volatile"Search
Google Scholar: with word "flavor"Search
Google Scholar: with word "odor"Search
Perfumer and Flavorist: Search
Google Patents: Search
US Patents: Search
EU Patents: Search
Pubchem Patents: Search
PubMed: Search
NCBI: Search
 FDA/DG SANTE Petitions, Reviews, Notices:
184.1191 Calcium carbonate View-review
EU SANCO Calcium carbonate View-review
JECFA Food Additive: Calcium Carbonate
GSFA Codex: Calcium carbonate (170(i))
DG SANTE Food Additives: calcium carbonate
FDA Mainterm: CALCIUM CARBONATE
FDA Regulation:
FDA PART 137 -- CEREAL FLOURS AND RELATED PRODUCTS
Subpart B--Requirements for Specific Standardized Cereal Flours and Related Products
Sec. 137.105 Flour.


FDA PART 137 -- CEREAL FLOURS AND RELATED PRODUCTS
Subpart B--Requirements for Specific Standardized Cereal Flours and Related Products
Sec. 137.350 Enriched rice.


FDA PART 169 -- FOOD DRESSINGS AND FLAVORINGS
Subpart B--Requirements for Specific Standardized Food Dressings and Flavorings
Sec. 169.115 French dressing.


FDA PART 175 -- INDIRECT FOOD ADDITIVES: ADHESIVES AND COMPONENTS OF COATINGS
Subpart C--Substances for Use as Components of Coatings
Sec. 175.300 Resinous and polymeric coatings.


FDA PART 176 -- INDIRECT FOOD ADDITIVES: PAPER AND PAPERBOARD COMPONENTS
Subpart B--Substances for Use Only as Components of Paper and Paperboard
Sec. 176.170 Components of paper and paperboard in contact with aqueous and fatty foods.


FDA PART 177 -- INDIRECT FOOD ADDITIVES: POLYMERS
Subpart B--Substances for Use as Basic Components of Single and Repeated Use Food Contact
Sec. 177.1600 Polyethylene resins, carboxyl modified.


FDA PART 177 -- INDIRECT FOOD ADDITIVES: POLYMERS
Subpart B--Substances for Use as Basic Components of Single and Repeated Use Food Contact
Sec. 177.1680 Polyurethane resins.


FDA PART 177 -- INDIRECT FOOD ADDITIVES: POLYMERS
Subpart C--Substances for Use Only as Components of Articles Intended for Repeated Use
Sec. 177.2260 Filters, resin-bonded.


FDA PART 178 -- INDIRECT FOOD ADDITIVES: ADJUVANTS, PRODUCTION AIDS, AND SANITIZERS
Subpart D--Certain Adjuvants and Production Aids
Sec. 178.3297 Colorants for polymers.


FDA PART 181 -- PRIOR-SANCTIONED FOOD INGREDIENTS
Subpart B--Specific Prior-Sanctioned Food Ingredients
Sec. 181.29 Stabilizers.


FDA PART 182 -- SUBSTANCES GENERALLY RECOGNIZED AS SAFE


FDA PART 184 -- DIRECT FOOD SUBSTANCES AFFIRMED AS GENERALLY RECOGNIZED AS SAFE
Subpart B--Listing of Specific Substances Affirmed as GRAS
Sec. 184.1191 Calcium carbonate.


FDA PART 73 -- LISTING OF COLOR ADDITIVES EXEMPT FROM CERTIFICATION
Subpart B--Drugs
Sec. 73.1070 Calcium carbonate.
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Physical Properties:
Appearance: white crystalline powder (est)
Assay: 98.00 to 100.00 % 
Food Chemicals Codex Listed: No
Melting Point: 800.00 °C. @ 760.00 mm Hg
Flash Point: 32.00 °F. TCC ( 0.00 °C. ) (est)
Soluble in:
 water, 1e+006 mg/L @ 25 °C (est)
Insoluble in:
 alcohol
 water
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Organoleptic Properties:
Odor Description:
at 100.00 %. 
odorless
Taste Description:
tasteless
  
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Cosmetic Information:
CosIng: cosmetic data2
CosIng: cosmetic data
Cosmetic Uses: abrasives
buffering agents
bulking agents
opacifying agents
oral care agents
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Suppliers:
Aceto
Calcium Carbonate
Allan Chemical
Calcium Carbonate
American Elements
Calcium Carbonate 99%
Odor: characteristic
Use: Calcium Carbonate is a water insoluble Calcium source that can easily be converted to other Calcium compounds, such as the oxide by heating (calcination). Carbonate compounds also give off carbon dioxide when treated with dilute acids. Calcium Carbonate is generally immediately available in most volumes. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards.
American International Chemical
Calcium Carbonate USP FCC Powder Acala
Chemical-navi - Nikkol
LDR-CA
Odor: characteristic
Use: Oil absorbing powder for makeup and skin care. Reduces shine of oily skin.
ECSA Chemicals
Calcium Carbonate
Company Profile
EMD Millipore
For experimental / research use only.
Calcium Carbonate
Jost Chemical
Calcium Carbonate Low Aluminum USP Fine Granular
Kraft Chemical
Calcium Carbonate
Novacarb
Calcium Carbonate
Penta International
CALCIUM CARBONATE LIGHT POWDER
Penta International
CALCIUM CARBONATE USP HEAVY POWDER
Prinova
Calcium Carbonate
Sigma-Aldrich
For experimental / research use only.
Calcium Carbonate ReagentPlus®
Universal Preserv-A-Chem Inc.
CALCIUM CARBONATE GRANULAR FCC Direct Compression
Odor: characteristic
Use: Used as an additive in building materials, paper, paint, plastic, glass, metal production and pH regulating agent.
Universal Preserv-A-Chem Inc.
CALCIUM CARBONATE HEAVY POWDER USP FCC KOSHER
Universal Preserv-A-Chem Inc.
CALCIUM CARBONATE HEAVY USP
Odor: characteristic
Use: Is a natural chemical compound found in rocks, shells and pearls.. Calcium carbonate is used as a calcium supplement and as an antacid however excessive consumption can be hazardous.
Universal Preserv-A-Chem Inc.
CALCIUM CARBONATE PRECIPITATED LIGHT USP FCC
Odor: characteristic
Use: Used to absorb water and add calcium in food products, and in sugar.
Universal Preserv-A-Chem Inc.
CALCIUM CARBONATE USP ALBAGLOS
Odor: characteristic
Use: Fortification for functional foods and beverages such as cereals, baked goods, flour, dry food mixes, candies and other confectionaries. Used in chewing gums as dusting agent. Toothpaste as an abrasive. Mineral in pet foods. Pharmaceutical use as an antacid.
Universal Preserv-A-Chem Inc.
CALCIUM CARBONATE USP POWDER
Odor: characteristic
Use: Fortification for functional foods and beverages such as cereals, baked goods, flour, dry food mixes, candies and other confectionaries. Used in chewing gums as dusting agent. Toothpaste as an abrasive. Mineral in pet foods. Pharmaceutical use as an antacid.
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Safety Information:
European information :
Most important hazard(s):
Xi - Irritant
R 37/38 - Irritating to respiratory system and skin.
R 41 - Risk of serious damage to eyes.
S 02 - Keep out of the reach of children.
S 22 - Do not breath dust.
S 24/25 - Avoid contact with skin and eyes.
S 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S 36/37/39 - Wear suitable clothing, gloves and eye/face protection.
 
Hazards identification
 
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
None found.
GHS Label elements, including precautionary statements
 
Pictogram
 
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
oral-rat LD50  6450 mg/kg
"Sbornik Vysledku Toxixologickeho Vysetreni Latek A Pripravku," Marhold, J.V., Institut Pro Vychovu Vedoucicn Pracovniku Chemickeho Prumyclu Praha, Czechoslovakia, 1972Vol. -, Pg. 267, 1972.

Dermal Toxicity:
Not determined
Inhalation Toxicity:
Not determined
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Safety in Use Information:
Category: multipurpose additives
Recommendation for calcium carbonate usage levels up to:
 not for fragrance use.
 
Recommendation for calcium carbonate flavor usage levels up to:
 not for flavor use.
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Safety References:
European Food Safety Authority (EFSA) reference(s):
Scientific Opinion on re-evaluation of calcium carbonate (E 170) as a food additive
View page or View pdf
EPI System: View
ClinicalTrials.gov: search
Daily Med: search
NIOSH International Chemical Safety Cards: search
NLM Hazardous Substances Data Bank: Search
Chemical Carcinogenesis Research Information System: Search
Cancer Citations: Search
Toxicology Citations: Search
Env. Mutagen Info. Center: Search
NLM Developmental and Reproductive Toxicity: Search
EPA Substance Registry Services (TSCA): 471-34-1
EPA ACToR: Toxicology Data
EPA Substance Registry Services (SRS): Registry
Laboratory Chemical Safety Summary : 10112
National Institute of Allergy and Infectious Diseases: Data
WGK Germany: nwg
 calcium carbonate
Chemidplus: 0000471341
EPA/NOAA CAMEO: hazardous materials
RTECS: 471-34-1
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References:
 calcium carbonate
NIST Chemistry WebBook: Search Inchi
Canada Domestic Sub. List: 471-34-1
Pubchem (cid): 10112
Pubchem (sid): 134975333
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Other Information:
(IUPAC): Atomic Weights of the Elements 2009
(IUPAC): Atomic Weights of the Elements 2009 (pdf)
Videos: The Periodic Table of Videos
tgsc: Atomic Weights use for this web site
(IUPAC): Periodic Table of the Elements
FDA Everything Added to Food in the United States (EAFUS): View
CHEBI: View
CHEMBL: View
KEGG (GenomeNet): C08129
HMDB (The Human Metabolome Database): Search
FooDB: FDB015437
Export Tariff Code: 2836.50.0000
Haz-Map: View
Household Products: Search
MedlinePlusSupp: View
ChemSpider: View
Wikipedia: View
RSC Learn Chemistry: View
Formulations/Preparations:
•precipitated calcium carbonate, precipitated chalk, aeromatt, albacar, purecal. commercial caco3 produced by chem means. it is 98-99% pure. prepared calcium carbonate, drop chalk, prepared chalk, whiting, english white, paris white. native calcium carbonate purified by elutriation. •available in filler grades; usp grades; technical grades; high-purity grades; and specialty grades •found in: tums, 500 mg; tums-extra strength, 750 mg •both natural ground or precipitated calcium carbonate are available as dry products. calcium carbonate slurry, primarily used in the paper industry, is typically >70% solids by weight for ground products and 20-50% solids by weight for precipitated. some grades are surface coated to improve handling and dispersibility in plastics. agents used for surface treatment used are fatty acids, resins, and wetting agents. •maalox quick dissolve: 600 mg caco3tablet; mylanta: 150 mg mg(oh)2 and 350 mg caco3tablet; rolaids: 110 mg mg(oh)2 and 550 mg caco3tablet from table
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Potential Blenders and core components note
 
None Found
 
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Potential Uses:
 abrasives 
 buffering agents 
 cosmetic colorants 
 opacifying agents 
 oral care agents 
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Occurrence (nature, food, other): note
 not found in nature
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Synonyms:
 aeromatt
 albacar 5970
 albaglos SF
 blackboard chalk
 brilliant 15
 britomya M
 c.i. 77220
 C.I. pigment white 18
 calcene CO
 calcicoll
 calcilit 100
 calcitrel
precipitated calcium carbonate
 calcium carbonate light powder
 calcium carbonate USP FCC powder acala
 calcium carbonate USP heavy powder
 calcium milk
 calcium trioxidocarbonate
 calciumcarbonate
 calibrite
 calofil E 2
 calofort U
 calopake H
 calwhite
 camel-tex
 carbium MM
 carbonate, calcium
 carbonic acid calcium salt (1:1)
 carbonic acid, calcium salt (1:1)
 carborex 2
 ci 77220
 domolite
 durcal 10
 eskalon 100
 finncarb 6002
 garolite SA
 hakuenka DD
 homocal D
 hydrocarb 65
 kotamite
 LDR-CA
 marble dust
 marble white
 marblewhite 325
 micromya
 microwhite 25
 milk of calcium
 multifex MM
 neoanticid
 neolite F
 pigment white 18
 titralac
 vaterite
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Articles:
PubMed: Chicken eggshell as suitable calcium source at home.
PubMed: Preparation of core-shell CaCO3 capsules via Pickering emulsion templates.
PubMed: Utilization of date syrup as a tablet binder, comparative study.
PubMed: Fortification of all-purpose wheat-flour tortillas with calcium lactate, calcium carbonate, or calcium citrate is acceptable.
PubMed: Iodine stability in salt double-fortified with iron and iodine.
PubMed: Whole rolled sunflower seeds with or without additional limestone in lactating dairy cattle rations.
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