Back to Catalog
Chelating Agents

Trisodium phosphate dodecahydrate

CAS: 10101-89-0

Overview

Trisodium phosphate dodecahydrate (CAS 10101-89-0 ), commonly known as TSP, is the hydrated crystalline form of trisodium phosphate used across industrial and institutional markets. It functions as a heavy-duty cleaner, pH buffer, and sequestrant.

This chemical acts as a flame retardant across a broad range of manufacturing and processing applications. In industrial cleaning and surface preparation, TSP cuts through grease, oils, and mineral deposits on metal and concrete.

It is frequently applied to painted surfaces prior to coating or refinishing to ensure proper adhesion. Water treatment facilities use it to adjust pH and sequester calcium and magnesium ions, preventing scale formation.

This sequestration is vital for maintaining distribution systems and boilers in high-pressure environments. Textile and paper processing operations rely on TSP to control bath pH and chelate interfering metal ions.

These properties are essential during bleaching and dyeing stages to ensure color consistency. In flame retardant formulations and building materials, it contributes phosphate-based fire resistance to coatings and adhesives.

The product is also utilized in construction products to enhance safety and durability. Trisodium phosphate dodecahydrate is supplied as white crystalline granules or powder for easy handling and dissolution.

Standard commercial grades include technical grade and food-grade specifications meeting FCC requirements. Industrial supply is typically available in bulk bags or multi-wall sacks for large-scale operations.

Food-grade material is packaged specifically to meet handling and contamination control requirements. This ensures the material remains stable and effective throughout the supply chain and final application.

Contact us for supply of Trisodium phosphate dodecahydrate

Physical Properties

Melting Point65 °C
Density1.62 g/cm³ (liquid)
Appearancewhite crystals
ColorWhite
FormSolid
Water Solubility258 g/L (20 ºC)
pH12 (10g/l, H2O, 20℃)
Log P-2.148 (est)

Safety & Handling

Danger GHS05 GHS07 Hazard Statements H314 Causes severe skin burns and eye damage H315 Causes skin irritation H319 Causes serious eye irritation H335 May cause respiratory irritation Precautionary Statements P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P271 Use only outdoors or in a well-ventilated area. P280 Wear protective gloves/protective clothing/eye protection/face protection. P316 Get emergency medical help immediately. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P363 Wash contaminated clothing before reuse. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P332+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P301+P330+P331 Rinse mouth. Do NOT induce vomiting. P302+P361+P354 IF ON SKIN: Take off immediately all contaminated clothing. Rinse skin with water/shower. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P305+P354+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code28352300
UN Number3262
ADR Class8
Packing GroupIII
Storage Class8A - Combustible corrosive hazardous materials
WGK (Germany)1

Other Names

Sodium phosphate tribasic dodecahydrate | Sodium phosphate dodecahydrate | Phosphoric acidtrisodium saltdodecahydrate | Phosphoric acidtrisodium saltdodeahydrate | B70850QPHR | FRESH AQUA | Phosphoric acidsodium salthydrate (1:3:12) | Trisodium orthophosphate dodecahydrate | TSP

Related Products

Chemical Properties

CAS Number
10101-89-0
EC Number
600-151-8
Mol. Weight
380.12
HS Code
28352300

Industries

Documentation