Stannous chloride

CAS: 7772-99-8

Overview

Stannous chloride (CAS 7772-99-8 ), also known by its food additive designation E512 , is an inorganic tin salt used across industrial and food-grade applications as a reducing agent, catalyst, and stabilizer.

It prevents oxidative discoloration in processed foods, accelerates polymerization reactions, and supports metal surface treatment processes. In food and beverage processing, E512 is approved to prevent color degradation.

This additive is particularly effective in canned and preserved products, such as white asparagus and certain seafood. Textile and leather manufacturers use it as a mordant to fix dyes and improve color fastness.

It is applied to both natural and synthetic fibers to ensure long-lasting results. In plastics and polymer production, it functions as a catalyst or catalyst precursor in the synthesis of polyurethanes.

The chemical is also vital for other polymer systems. Printed circuit board and packaging manufacturers apply it in tin plating and surface sensitization processes to prepare substrates for further metallic coating.

Stannous chloride is supplied as an anhydrous powder or as the dihydrate crystalline form, with the dihydrate being the more common commercial grade. Standard grades include food-grade, technical, and reagent-grade.

Packaging typically ranges from small drums to bulk quantities depending on the grade and intended application. This ensures flexibility for various industrial requirements and large-scale manufacturing needs.

Physical Properties

Melting Point	246 °C
Boiling Point	623 °C
Density	3.90 g/cm³
Flash Point	652°C
Appearance	Stannous chloride is a white crystalline solid.
Color	White
Odor	Odorless
Form	powder
Water Solubility	Soluble in water, alkalies, alcohol, methyl ethyl ketone, methyl acetate and acetone.
Vapor Pressure	0Pa at 20℃
pH	2.0 (100g/l, H2O, 20℃)
Log P	-2.15 at 20℃

Safety & Handling

Danger GHS05 GHS07 GHS08 GHS09 Hazard Statements H290 May be corrosive to metals H302 Harmful if swallowed H303 May be harmful if swallowed H312 Harmful in contact with skin H314 Causes severe skin burns and eye damage H317 May cause an allergic skin reaction H318 Causes serious eye damage H319 Causes serious eye irritation H332 Harmful if inhaled H335 May cause respiratory irritation H372 Causes damage to organs through prolonged or repeated exposure H373 May causes damage to organs through prolonged or repeated exposure H400 Very toxic to aquatic life H410 Very toxic to aquatic life with long lasting effects H412 Harmful to aquatic life with long lasting effects H302+H332 Harmful if swallowed or if inhaled Precautionary Statements P234 Keep only in original packaging. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P272 Contaminated work clothing should not be allowed out of the workplace. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P316 Get emergency medical help immediately. P317 Get emergency medical help. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P330 Rinse mouth. P363 Wash contaminated clothing before reuse. P390 Absorb spillage to prevent material damage. P391 Collect spillage. P405 Store locked up. P406 Store in a corrosion-resistant/… container with a resistant inner liner. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P317 Get emergency medical help. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P333+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 Code	28273990
UN Number	3260
ADR Class	8
Packing Group	III
Storage Class	8B - Non-combustible corrosive hazardous materials
WGK (Germany)	1

Other Names

Industries

Printing & Packaging Plastics & Polymers Textile, Leather & Paper Food & Nutrition