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Name
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EINECS
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232-190-8
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CAS No.
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7789-79-9
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Density
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2.243[at 20℃]
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PSA
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99.54000
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LogP
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0.81260
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Solubility
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Soluble in water. Practically insoluble in alcohol. Slightly soluble in glycerol
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Melting Point
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decomposes [ALF93]
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Formula
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CaH4O4P2
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Boiling Point
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480℃[at 101 325 Pa]
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Molecular Weight
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170.055
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Flash Point
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N/A
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Transport Information
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UN 3180 4.1/PG 2
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Appearance
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White powder and/or granules. Slight characteristic odor
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Safety
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7-15
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Risk Codes
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11
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Molecular Structure
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Hazard Symbols
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F
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Synonyms
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Calcium dihydrogen hypophosphite;Calcium phosphinate (Ca(H2PO2)2);Phosphinic acid, calcium salt;Calcium phosphinate;Calcium hypophosphite (Ca(H2PO2)2);
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CALCIUM HYPOPHOSPHITE Synthetic route
phosphorus
calcium oxide
ConditionsConditions | Yield |
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In water byproducts: PH3; addn. of 600 ml H2O to 120 g CaO, addn. of 20 g crushed, yellow P at boiling heat, boiling for 8-10 hours with replacement of vaporized H2O; introduction of CO2 into filtrate at 70-80°C; filtration after short boiling; vaporization till crystn.;; recrystn. from 3-4 parts H2O; yield 18-22 g pure Ca(PH2O2)2;; | |
In water byproducts: PH3; addn. of 600 ml H2O to 120 g CaO, addn. of 20 g crushed, yellow P at boiling heat, boiling for 8-10 hours with replacement of vaporized H2O; introduction of CO2 into filtrate at 70-80°C; filtration after short boiling; vaporization till crystn.;; recrystn. from 3-4 parts H2O; yield 18-22 g pure Ca(PH2O2)2;; | |
calcium phosphide
ConditionsConditions | Yield |
---|
With Ca2P2O7 In water decompn. of phosphorus lime with boiling water;; treatment of filtrate with CO2, crystn., drying at 100°C;; | |
With Ca2P2O7 In water decompn. of phosphorus lime with boiling water;; treatment of filtrate with CO2, crystn., drying at 100°C;; | |
In water | |
phosphorus
calcium hydroxide
ConditionsConditions | Yield |
---|
In chloroform; water byproducts: PH3; stirring on slight warming (ground temp. 44°C, surface temp. 37°C) for ca 80 hours; after storage for 24 hours decantation of clear layer, saturating with CO2, filtration;; vaporization in vac.;; | |
In calcium hydroxide byproducts: PH3; addn. of small amt. of yellow P to boiling lime milk, till there is no formation of PH3;; removal of excessive Ca(OH)2 by introduction of CO2 at elevated temp. into filtrate; vaporization on air or over H2SO4 in vac.;; | |
In water byproducts: PH3; aq. Ca(OH)2 suspension; in closed vessel;; | |
A
tricalcium diphosphate
ConditionsConditions | Yield |
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With calcium hydroxide In neat (no solvent) byproducts: H2; on boiling water bath; | |
ConditionsConditions | Yield |
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With calcium hydroxide In not given byproducts: H2; by heating; | |
dicalcium phosphate anhydrous
ConditionsConditions | Yield |
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Stage #1: calcium bis(hypophosphite); calcium(II) nitrate In water Stage #2: at 200 - 252℃; under 33098.3 Torr; for 0.733333h; | |
ConditionsConditions | Yield |
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With water without warming; | |
nickel dichloride
ConditionsConditions | Yield |
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With Na acetate In not given pH=5.0-5.5 (NaOH) , 92-93°C; | |
ammonium carbonate
ConditionsConditions | Yield |
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filtration, recrystn. from water or alc.; | |
copper(II) ion
poly(copper(II)-di-μ-hypophosphito-μ-urea)
ConditionsConditions | Yield |
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In water Cu(II) : Ca(H2PO2)2 : (NH2)2CO = 1:1:2; evapn. of the soln. for several d at room temp.; elem. anal.; | |
CALCIUM HYPOPHOSPHITE Chemical Properties
Product Name:Calcium hypophosphite(7789-79-9)
CAS No:7789-79-9
MF: CaH4O4P2
MW: 166.02
Sensitive : Hygroscopic
Calcium hypophosphite(7789-79-9)`s Synonyms: Phosphinicacid,calciumsalt;CALCIUM HYPOPHOSPHITE;CALCIUM PHOSPHINATE;CALCIUM HYPOPHOSPHITE EXTRA PURE, DAC;Lime hypophosphite;CALCIUM HYPOPHOSPHITE TECHNICAL;CALCIUMHYPOPHOSPHITE,PURIFIED;Calcium hydrophosphite
Calcium hypophosphite(7789-79-9)`s Molecular Structure:
CALCIUM HYPOPHOSPHITE Uses
As corrosion inhibitor, in nickel plating, Calcium hypophosphite has been used as dietary supplement.
CALCIUM HYPOPHOSPHITE Toxicity Data With Reference
Skin:Calcium hypophosphite may cause skin irritation or burns. Extravasation of iv infusions of calcium salts may cause cellulitis-type lesions.
Ingestion:Calcium hypophosphite is more irritating than other calcium salts.
CALCIUM HYPOPHOSPHITE Consensus Reports
First Aid Measures :
Ingestion: Seek medical attention. If individual is drowsy or unconscious, do not give anything by mouth; place individual on the left side with the head down. Contact a physician, medical facility, or poison control center for advice about whether to induce vomiting. If possible, do not leave individual unattended.
Inhalation: If symptoms develop, move individual away from exposure and into fresh air. If symptoms persist, seek medical attention. If breathing is difficult, administer oxygen. Keep person warm and quiet; seek immediate medical attention.
Skin:Remove contaminated clothing. Wash exposed area with soap and water. If symptoms persist, seek medical attention. Launder clothing before reuse.
Eyes:If symptoms develop, immediately move individual away from exposure and into fresh air. Flush eyes gently with water for at least 15 minutes while holding eyelids apart; seek immediate medical attention.
Storage:Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling:All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
CALCIUM HYPOPHOSPHITE Safety Profile
Hazard Codes : F
Risk Statements : 11
Safety Statements :7-15
RIDADR : UN 3180 4.1/PG 2
WGK Germany : 3
CALCIUM HYPOPHOSPHITE Specification
Personal Protection:Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.
Fire Fighting:Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use agent most appropriate to extinguish fire.