磷酸钙

Description

Calcium Phosphates · CAS 7758-87-4 · Ca3(PO4)2. UNII K4C08XP666. Melting Point: >450; Melting Point: 1670 °C; Solubility: 7.7g/L.

Identification

CAS Registry Number	7758-87-4
PubChem CID	24456
Molecular formula	Ca3(PO4)2
IUPAC name	tricalcium diphosphate
UNII (FDA)	K4C08XP666
FEMA number	3081

Computed Descriptors

Molecular Weight	310.18
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	8
Rotatable Bond Count	0
Exact Mass	309.7946135
Monoisotopic Mass	309.7946135
Topological Polar Surface Area	173
Heavy Atom Count	13
Formal Charge	0
Complexity	36.8

Physical & Chemical Properties

Melting Point	>450
Melting Point	1670 °C
Solubility	7.7g/L
Solubility	2.5 mg/100 g water at 25 °C
Density	3.14 g/cu cm
Density	2.5 @ 20°C

Physical description & handling notes

• Calcium phosphate is an odorless white solid. Sinks and mixes with water. (USCG, 1999)
• Dry Powder; Liquid
• Wet Solid
• A white, odourless powder which is stable in air
• White odorless solid; [HSDB] White odorless powder; [MSDSonline]
• White odorless solid; [CAMEO]

Regulatory Status

Regulatory & Food Contact

FDA Regulatory Status of Color Additives: Foods FDA Substance added to food: ANTICAKING AGENT OR FREE-FLOW AGENT, DRYING AGENT, EMULSIFIER OR EMULSIFIER SALT FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS ACIDITY_REGULATOR; ANTICAKING_AGENT: Food Additives Tricalcium phosphate consists of a variable mixture of calcium phosphates obtained from neutralisation of phos ANTICAKING AGENT OR FREE-FLOW AGENT, DRYING AGENT, EMULSIFIER OR EMULSIFIER SALT, FLAVORING AGENT OR ADJUVANT,

GHS notification summary

95.7% (529 / 553)

GHS Hazard Classification

GHS notification summary	95.7% (529 / 553)
Reported hazard statements	H318 (25%)

Documented Uses

• CIR ingredient: Calcium Phosphate
• CIR ingredient: Tricalcium Phosphate
• Textiles (Printing, Dyeing, or Finishing) [Category: Industry]
• Glass Manufacturing [Category: Industry]
• Ceramics making [Category: Hobbies]
• Farming (Feed Additives) [Category: Industry]

Synonyms

7758-87-4; TRICALCIUM PHOSPHATE; Synthos; Calcium orthophosphate; Tricalcium diphosphate; Phosphoric acid, calcium salt (2:3); Tricalcium orthophosphate; Calcigenol simple; Tertiary calcium phosphate; Bonarka; Calcium phosphate, tribasic; Calcium tertiary phosphate; Calcium phosphate (3:2); Natural whitlockite; FEMA No. 3081; Calcium phosphate (Ca3(PO4)2)

Frequently Asked Questions

What are the CAS number and molecular formula of Calcium Phosphates?

CAS 7758-87-4; molecular formula Ca3(PO4)2; molecular weight — g/mol.

What other names is Calcium Phosphates known by?

7758-87-4, TRICALCIUM PHOSPHATE, Synthos, Calcium orthophosphate, Tricalcium diphosphate, Phosphoric acid, calcium salt (2:3).

What is the regulatory status of Calcium Phosphates?

Documented regulatory listings: FDA Regulatory Status of Color Additives: Foods; FDA Substance added to food: ANTICAKING AGENT OR FREE-FLOW AGENT, DRYING AGENT, EMULSIFIER OR EMULSIFIER SALT; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS.

Is Calcium Phosphates classified as hazardous?

95.7% of GHS notifications report no hazard classification (529 of 553).

What are the key physical properties of Calcium Phosphates?

Melting Point: >450; Melting Point: 1670 °C; Solubility: 7.7g/L; Solubility: 2.5 mg/100 g water at 25 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.