15578-26-4

Basic information

• Product Name: Stannous pyrophosphate
• Synonyms: STANNOUS PYROPHOSPHATE;diphosphoricacid,tin(2+)salt(1:2);diphosphoricacid,tin(2++)salt(1:2);phosphoricacid,tin(2+)salt(1:2);pyrophosphoricacid,tin(2+)salt(1:2);tin(2+)diphosphate(1:2);tin(2+)pyrophosphate;tinpyrophosphate(6ic,7ci)
• CAS NO: 15578-26-4
• Molecular Formula: O7P2Sn2
• Molecular Weight: 411.36
• EINECS: 239-635-5
• Product Categories: Metal and Ceramic Science;Salts;Tin Salts;Materials Science;Metal and Ceramic Science;Tin Salts
• Mol File: 15578-26-4.mol
• Article Data: 0

Chemical Properties

• Melting Point: >400°C (dec.)
• Appearance: /Powder
• Density: 4,01 g/cm3
• Storage Temp.: Refrigerator
• Water Solubility: Insoluble in water.
• Merck: 14,8788
• CAS DataBase Reference: Stannous pyrophosphate(CAS DataBase Reference)
• NIST Chemistry Reference: Stannous pyrophosphate(15578-26-4)
• EPA Substance Registry System: Stannous pyrophosphate(15578-26-4)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-37/39
• WGK Germany: 2
• RTECS: JL6737500
• TSCA: Yes
• Hazardous Substances Data: 15578-26-4(Hazardous Substances Data)

Usage

Description

Stannous pyrophosphate, also known as Tin(II) pyrophosphate, is a chemical compound with the formula Sn2P2O7. It is an amorphous white powder with a specific gravity of 4.009 at 16 °C (60.8 °F) and decomposes at temperatures above 400 °C. Stannous pyrophosphate is insoluble in water but soluble in concentrated mineral acids and sodium pyrophosphate. It is commonly known by the brand name TechneScan PYP (Mallinckrodt).

Uses

1. Used in Dental Applications:
Stannous pyrophosphate is used as a desensitizing agent for tooth sensitivity, particularly in toothpaste formulations. It helps in reducing tooth sensitivity by blocking the dentinal tubules, thus providing relief from pain and discomfort caused by temperature changes, pressure, or acidic foods.
2. Used in Industrial Applications:
Stannous pyrophosphate is used as a corrosion inhibitor in various industrial processes, such as in the automotive and aerospace industries. It helps in preventing the formation of volatile sulfur compounds (VSC), which can cause corrosion and damage to metal surfaces.
3. Used in Electronics Industry:
In the electronics industry, stannous pyrophosphate is used for cyanide-free tin coating. It offers a safer and more environmentally friendly alternative to traditional cyanide-based tin plating processes, providing a protective coating for electronic components and improving their performance and durability.
4. Used in Chemical Research:
Stannous pyrophosphate is also utilized in chemical research as a reagent for various chemical reactions, such as in the synthesis of other tin-containing compounds and in the study of its chemical properties and behavior.

Production Methods

It is prepared from stannous chloride and sodium pyrophosphate, and used as a caries preventative in toothpaste and as a diagnostic aid in radioactive bone scanning and red-blood-cell labeling.

InChI:InChI=1/H4O7P2.2Sn.8H/c1-8(2,3)7-9(4,5)6;;;;;;;;;;/h(H2,1,2,3)(H2,4,5,6);;;;;;;;;;/q;2*+2;;;;;;;;/p-4/rH4O7P2.2H4Sn/c1-8(2,3)7-9(4,5)6;;/h(H2,1,2,3)(H2,4,5,6);2*1H4/q;2*+2/p-4

Related news

Clinical studyPrognostic value of a persistently positive technetium-99m Stannous pyrophosphate (cas 15578-26-4) myocardial scintigram after myocardial infarction09/07/2019

Technetium-99m stannous pyrophosphate myocardial scintigrams were obtained in 138 clinically stable patients 32.7 ± 47.3 weeks (range 6 to 260) after acute myocardial infarction. Of the 138 patients, 74 (54 percent) had a persistently positive scintigram. Patients with such a scintigram were mo...detailed

Experimental StudyMechanisms contributing to myocardial accumulation of technetium-99m Stannous pyrophosphate (cas 15578-26-4) after coronary arterial occlusion*09/06/2019

The relation between the accumulation of pyrophosphate and technetium-99m in myocardium with reversible and irreversible ischemic injury was studied in dogs subjected to transitory or persistent coronary arterial occlusion. Among four dogs with coronary occlusion maintained for less than 20 minu...detailed

Experimental and laboratory reportValue and limitations of technetium-99m Stannous pyrophosphate (cas 15578-26-4) in the detection of acute myocardial infarction☆09/05/2019

Technetium-99m stannous pyrophosphate (99mTc-PYP) myocardial imaging was performed in 436 consecutive patients for the evaluation of chest pain and suspected acute myocardial infarction (AMI). Scintigrams were assessed independently by three observers with a 90% interobserver agreement. In 134 p...detailed

Determination of the optimal concentrations of Stannous pyrophosphate (cas 15578-26-4) for in vivo red blood cell labelling with technetium-99m09/04/2019

The need to determine the appropriate injection volume of a stannous pyrophosphate preparation necessary to obtain good in vivo red blood cell labelling with subsequently injected 99mTc-pertechnetate is demonstrated. The test described can be applied with equipment available in any nuclear medic...detailed

Experimental and laboratory reportTechnetium-99m Stannous pyrophosphate (cas 15578-26-4) myocardial scintigrams in pericardial disease☆09/03/2019

Technetium-99m stannous pyrophosphate (99mTc-PYP) myocardial scintigrams were obtained in 35 acute pericarditis and in three chronic constrictive pericarditis patients. Thirteen of 35 acute pericarditis patients (37%) and one of three chronic constrictive pericarditis patients (33%) had abnormal...detailed

Mechanistic aspects of the interaction of 99mTc in association with Stannous pyrophosphate (cas 15578-26-4) with damaged red blood cells08/31/2019

The binding of the various components of [99mTc] stannous pyrophosphate and stannous pyrophosphate/pertechnetate to damaged red blood cells is studied. It is shown that the pyrophosphate molecule enters the damaged red blood cells when the pyrophosphate concentration in blood is greater than 100...detailed

Stabilization of Stannous pyrophosphate (cas 15578-26-4) kits with gentisic acid08/29/2019

We evaluated the ability of gentisic acid, an antioxidant, to stabilize stannous pyrophosphate (Sn:PPi) kits and extend the shelf-life of the kit after reconstitution. In vitro studies showed that gentisic acid (0.5 mg/mL) stabilized the stannous ion against oxidation by various levels of exogen...detailed