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Send EmailStannous Pyrophosphate, Ditin Pyrophosphate, Stannous, Tin Pyrophosphate, Pyro Stannous Phosphate, 15578-26-4
STANNOUS PYROPHOSPHATE – KALAY PİROFOSFAT
CAS Number: 15578-26-4
EC Number (EINECS): 239-628-9
Molecular Formula: Sn₂P₂O₇
Molecular Weight: 411.36 g/mol
Chemical Class: Inorganic tin salt (pyrophosphate)
SECTION 1: CHEMICAL IDENTITY AND DEFINITION
| Parameter | Information |
|---|---|
| Chemical Name (IUPAC) | Ditin pyrophosphate |
| Other Names | Stannous Pyrophosphate, Tin(II) Pyrophosphate, Pyro Stannous Phosphate, Diphosphoric Acid Ditin Salt, Phosphoric Acid Tin Salt (1:2), Sn(II) Pyrophosphate |
| Chemical Formula | Sn₂P₂O₇ |
| Molecular Weight | 411.36 g/mol |
| CAS Number | 15578-26-4 |
| EC Number (EINECS) | 239-628-9 |
| Chemical Class | Inorganic tin salt (pyrophosphate) |
| Appearance | White powder |
| Odor | Odorless |
| Physical State (20°C) | Solid (powder) |
| Tin Valence | Sn²⁺ (+2 valence) |
SECTION 2: PHYSICAL PROPERTIES
| Property | Value |
|---|---|
| Appearance | White powder |
| Odor | Odorless |
| Molecular Weight | 411.36 g/mol |
| Density | 4.01 g/cm³ |
| Melting Point | > 400 °C |
| Solubility in Water (20°C) | Insoluble |
| Solubility in Concentrated Acids | Soluble |
| Solubility in Alkaline Hydroxides | Soluble |
| Polarization | High |
| Particle Size | Fine powder |
SECTION 3: CHEMICAL PROPERTIES
| Property | Information |
|---|---|
| Chemical Formula | Sn₂P₂O₇ |
| Molecular Weight | 411.36 g/mol |
| Chemical Class | Inorganic tin salt (pyrophosphate) |
| Tin Valence | Sn²⁺ (+2) |
| Structure | Tin(II) ions and pyrophosphate anion |
| Stability | Stable under normal storage conditions |
| Impurity Sensitivity | Fe, Pb, As content must be very low (contaminates electroplating process) |
| Incompatible Materials | Strong acids, strong oxidizing agents |
Chemical Structure:
O O
|| ||
O-P-O-P-O
| |
O O
/ \
Sn²⁺ Sn²⁺
(Stannous Pyrophosphate / Sn₂P₂O₇)
SECTION 4: PURITY REQUIREMENTS
| Impurity | Maximum Criteria | Reason |
|---|---|---|
| Iron (Fe) | Very low | Disrupts electroplating process |
| Lead (Pb) | Very low | Disrupts electroplating process |
| Arsenic (As) | Very low | Disrupts electroplating process |
Note: For high-quality tin compounds, Fe, Pb, and As content must be kept at very low levels (≤ 0.001%).
SECTION 5: APPLICATION AREAS
5.1. Electroplating Industry
| Application | Function |
|---|---|
| Non-Cyanide Plating Baths | Electroplating in Tin-Nickel, Tin-Copper-Zinc baths |
| Current Distributor | Acts as current distributor in plating baths |
| Stable Tin Solution | Used dissolved in Tetrapotassium Pyrophosphate (TKPP) solution |
| Stabilization | Provides stability in electroplating baths |
5.2. Dental Health
| Application | Function |
|---|---|
| Toothpastes | As anti-plaque agent |
| Dental Plaque | Prevents plaque formation on teeth |
5.3. Medical Applications
| Application | Function |
|---|---|
| Red Blood Cell Labeling | Aids in diagnostic detection |
| Radioactive Scanning | Used for bone scanning procedures |
5.4. Electronics and Industrial Applications
| Application | Function |
|---|---|
| Thermal and Structural Properties | Provides thermal and structural properties to materials |
| Fire-Resistant Materials | Used in the production of fire-resistant materials |
| Volatile Sulfur Compound Prevention | Prevents formation of volatile sulfur compounds |
SECTION 6: QUALITY SPECIFICATIONS
| Parameter | Specification |
|---|---|
| Appearance | White powder |
| Identification | Positive (Tin and Pyrophosphate tests) |
| Tin Content (Sn²⁺) | High purity |
| Pyrophosphate Content | High purity |
| Iron (Fe) | ≤ 0.001% |
| Lead (Pb) | ≤ 0.001% |
| Arsenic (As) | ≤ 0.001% |
| Water Insoluble | ≤ 0.1% |
| Loss on Drying | ≤ 0.5% |
SECTION 7: STORAGE AND SHELF LIFE
| Parameter | Information |
|---|---|
| Storage Conditions | Cool (15-25°C), dry, well-ventilated area |
| Container Requirements | Tightly closed, original packaging |
| Protect From | Moisture, strong acids, strong oxidizing agents |
| Shelf Life | 24-48 months (unopened original packaging) |
SECTION 8: PACKAGING OPTIONS
| Packaging Type | Quantity | Material |
|---|---|---|
| PE-lined kraft paper bag | 25 kg | Kraft paper + PE |
| Plastic pail | 20-25 kg | HDPE |
| Fiber drum | 25-50 kg | HDPE + PE |
| Aluminum foil bag | 1-5 kg | Laminated aluminum |
SECTION 9: SAFETY AND HEALTH INFORMATION
GHS Classification (Bulk Powder)
| Hazard Class | Category |
|---|---|
| Skin Irritation | Category 2 (H315) |
| Eye Irritation | Category 2A (H319) |
| Signal Word | Warning |
Hazard Statements (H-Codes)
| Code | Statement |
|---|---|
| H315 | Causes skin irritation |
| H319 | Causes serious eye irritation |
Precautionary Statements (P-Codes)
| Code | Statement |
|---|---|
| P261 | Avoid breathing dust |
| P280 | Wear protective gloves/eye protection |
| P302+P352 | IF ON SKIN: Wash with plenty of soap and water |
| P305+P351+P338 | IF IN EYES: Rinse cautiously with water for several minutes; remove contact lenses if present and easy to do; continue rinsing |
SECTION 10: TOXICOLOGICAL INFORMATION
| Parameter | Value |
|---|---|
| Oral LD50 (Rat) | > 2,000 mg/kg |
| Carcinogenicity | Not classified |
| Mutagenicity | Negative in standard tests |
| Tin Compounds | Standard tin compound safety precautions apply |
SECTION 11: FIRST AID MEASURES
| Exposure Route | Action |
|---|---|
| Inhalation | Move to fresh air. If respiratory irritation persists, seek medical attention. |
| Skin Contact | Wash with plenty of soap and water. Remove contaminated clothing. |
| Eye Contact | Rinse immediately with plenty of water for at least 15 minutes. Seek medical attention. |
| Ingestion | Rinse mouth. Drink plenty of water. Seek medical attention. |
SECTION 12: REGULATORY STATUS
| Region / Authority | Status |
|---|---|
| European Union | Registered as industrial chemical |
| USA (FDA) | Approved for use in toothpaste formulations |
| Turkey | Approved for cosmetic and industrial use |
| REACH | Registered |
SECTION 13: TRANSPORT INFORMATION
| Parameter | Information |
|---|---|
| UN Number | Not regulated (not dangerous goods) |
| Hazard Class | Not applicable |
| Packing Group | Not applicable |
| ADR/RID | Not regulated |
| IMDG Code | Not regulated |
| IATA (Air) | Not regulated |
| Marine Pollutant | No |
SECTION 14: FIRE-FIGHTING MEASURES
| Parameter | Information |
|---|---|
| Fire Hazard | Non-combustible (inorganic salt) |
| Suitable Extinguishing Media | Water spray (mist), CO₂, dry chemical powder |
| Specific Hazards | When heated, emits phosphoric acid fumes, tin oxides |
| Decomposition Products | P₂O₅, SnO₂ |
| Protective Equipment | Self-contained breathing apparatus (SCBA), full protective clothing |
SECTION 15: ACCIDENTAL SPILLAGE AND CLEANUP
| Parameter | Information |
|---|---|
| Personal Protection | Nitrile gloves, protective goggles, dust mask (N95) |
| Cleaning Methods | Sweep or vacuum; avoid dust generation |
| Environmental Precautions | Prevent entry into drains, soil, and surface waters |
| Waste Disposal | According to local regulations; landfilling at licensed facilities |
SECTION 16: OTHER NAMES AND SYNONYMS
| Type | Name |
|---|---|
| Turkish Names | Kalay Pirofosfat, Piro Kalaylı Fosfat |
| English Names | Stannous Pyrophosphate, Tin(II) Pyrophosphate, Ditin Pyrophosphate |
| Chemical Names | Diphosphoric Acid Ditin Salt, Phosphoric Acid Tin Salt |
| CAS Number | 15578-26-4 |
| EC Number | 239-628-9 |
SECTION 17: SUMMARY AND CRITICAL NOTES
Product Summary
| Parameter | Value |
|---|---|
| Product | Stannous Pyrophosphate |
| CAS Number | 15578-26-4 |
| Appearance | White powder |
| Molecular Weight | 411.36 g/mol |
| Tin Valence | Sn²⁺ (+2) |
| Primary Function | Electroplating, toothpaste, medical applications |
Critical Notes
-
High Purity Requirement: For electroplating applications, Fe, Pb, and As content must be very low (≤ 0.001%).
-
Non-Cyanide Plating: Used in cyanide-free plating baths (Tin-Nickel, Tin-Copper-Zinc).
-
Polarization: Has high polarization properties; used as current distributor.
-
Solubility: Insoluble in water; soluble in concentrated acids and alkaline hydroxides.
-
TKPP Combination: Used with Tetrapotassium Pyrophosphate (TKPP) to form stable tin solutions.
-
Toothpaste Application: Used as anti-plaque agent in toothpaste formulations.
-
Medical Applications: Used for red blood cell labeling and bone scanning.
-
Fire-Resistant Materials: Used in electronics industry for fire-resistant material production.
-
Storage: Store in cool, dry place away from moisture.
-
Regulatory Status: FDA-approved toothpaste ingredient; REACH registered.
IMPORTANT DECLARATION: This Technical Data Sheet (TDS) is for informational purposes only and has been prepared based on available technical data. The user is responsible for determining the product's suitability for their specific application and for complying with all local, national, and international regulations. For complete safety, storage, use, transport, waste, and regulatory compliance information, refer to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier.
