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Calcium dihydrogenphoshate

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Name

Calcium dihydrogenphoshate

EINECS 231-837-1
CAS No. 7758-23-8 Density 2.22(16/4 °C)
Solubility insoluble in water Melting Point
Formula Ca.(H2PO4)2 Boiling Point 158 °C at 760 mmHg
Molecular Weight 234.05 Flash Point
Transport Information Appearance white crystalline powder
Safety 26-36/37-37/39 Risk Codes 36/37/38
Molecular Structure Molecular Structure of 7758-23-8 (Phosphoric acid,calcium salt (2:1)) Hazard Symbols IrritantXi
Synonyms

Acidcalcium phosphate;C 38;C 38 (phosphate);Calcium biphosphate;Calciumbis(dihydrogen phosphate);Calcium bis(orthophosphate);Calcium dihydrogenorthophosphate;Calcium dihydrogen phosphate;Calcium diorthophosphate;Calciumhydrogen phosphate (Ca(H2PO4)2);Calcium hydrogen phosphate (CaH4(PO4)2);Calcium monobasic phosphate;Calcium orthophosphate monobasic;Calcium phosphate(1:2);Calcium phosphate (Ca(H2PO4)2);Calcium phosphate (CaH4(PO4)2);Calciumphosphate monobasic;Calcium phosphate, primary;Calcium primary phosphate;Calcium superphosphate;Calcium tetrahydrogen orthophosphate;Calciumtetrahydrogen phosphate;HT Monocalcium Phosphate;Monobasic calcium phosphate;Monocalcium dihydrogen phosphate;Monocalcium orthophosphate;Monocalciumphosphate;Monocalcium phosphate (Ca(H2PO4)2);Monocalcium phosphate[CaH4(PO4)2];V 90;MDCP-Mono Dicalcium Phosphate;Calcium phosphate,monobasic;

 

Calcium dihydrogenphoshate Chemical Properties

IUPAC Name: Calcium dihydrogen phosphate
Molecular Formula: Ca(H2PO4)2
Molecular Weight: 234.0525 g/mol
EINECS: 231-837-1
Density : 2.22 (16/4 °C)
Water Solubility: Insoluble
Boiling Point: 158 °C at 760 mmHg
Vapour Pressure: 1.41 mmHg at 25 °C
Stability: Stable. Incompatible with strong acids
Appearance: White crystalline powder
Structure of Calcium dihydrogenphoshate (CAS NO.7758-23-8):
                           
Product Category of Calcium dihydrogenphoshate (CAS NO.7758-23-8): Inorganics

Calcium dihydrogenphoshate Production

 Calcium dihydrogenphoshate (CAS NO.7758-23-8) is derived by the reaction of Phosphoric acid and Calcium carbonate at 200°C.

Calcium dihydrogenphoshate Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 oral 15250mg/kg (15250mg/kg)   Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 52(12), Pg. 87, 1987.
rabbit LD50 skin > 2gm/kg (2000mg/kg) SKIN AND APPENDAGES (SKIN): "DERMATITIS, OTHER: AFTER SYSTEMIC EXPOSURE" National Technical Information Service. Vol. OTS0571950,
rat LD50 oral 3986mg/kg (3986mg/kg) SENSE ORGANS AND SPECIAL SENSES: PTOSIS: EYE
BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)
SKIN AND APPENDAGES (SKIN): HAIR: OTHER
National Technical Information Service. Vol. OTS0571950,

Calcium dihydrogenphoshate Safety Profile

Hazard Codes: IrritantXi
Risk Statements: 36/37/38
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.
Safety Statements: 26-36/37/39
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.
WGK Germany: 2
RTECS: TB8527000

Calcium dihydrogenphoshate Specification

 Calcium dihydrogenphoshate , its cas register number is 7758-23-8. It also can be called Calcium superphosphate ; and Acid calcium phosphate . Calcium dihydrogenphoshate (CAS NO.7758-23-8), a major component of phosphate rock such as phosphorite,apatite, and other phosphate minerals, is too insoluble to be an efficient fertilizer. The result is hydrated to turn the calcium sulfate into the dihydrate gypsum and sold as superphosphate of lime. Alternately phosphate rock may be treated with phosphoric acid to produce a purer form of monocalcium phosphate and is sold as triple phosphate.

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