BT-25
Dibutyltindilaurate
CAS: 77-58-7
Molecular Formula: C32H64O4Sn
BT-25 - Names and Identifiers
| Name | Dibutyltindilaurate |
| Synonyms | DBTL BT-25 dibutyltin dodecanoate Dibutyltin Laurate Dibutyltindilaurate Dibutyltin Dilaurate Di-n-butyldilauryltin Di-N-Butyltin Dilaurate Dibutyltin(Iv) Dilaurate Dibutyltin Didodecanoate Dibutylbis(Lauroyloxy)Tin dibutyl(didodecyl)stannane Dibutylbis(Lauroyloxy)Stannane |
| CAS | 77-58-7 |
| EINECS | 201-039-8 |
| InChI | InChI=1/2C12H24O2.2C4H9.Sn/c2*1-2-3-4-5-6-7-8-9-10-11-12(13)14;2*1-3-4-2;/h2*2-11H2,1H3,(H,13,14);2*1,3-4H2,2H3;/q;;;;+2/p-2/rC32H64O4Sn/c1-5-9-13-15-17-19-21-23-25-27-31(33)35-37(29-11-7-3,30-12-8-4)36-32(34)28-26-24-22-20-18-16-14-10-6-2/h5-30H2,1-4H3 |
BT-25 - Physico-chemical Properties
| Molecular Formula | C32H64O4Sn |
| Molar Mass | 631.558 |
| Melting Point | 22-24℃ |
| Boling Point | 296.1°C at 760 mmHg |
| Flash Point | 134.1°C |
| Water Solubility | <0.1 g/100 mL at 20℃ |
| Vapor Presure | 0.000661mmHg at 25°C |
| Physical and Chemical Properties | Appearance light yellow transparent oily liquid |
| Use | Used as plastic stabilizer, rubber curing agent |
BT-25 - Risk and Safety
| Hazard Symbols | T+ - Very toxic N - Dangerous for the environment  |
| Risk Codes | R22 - Harmful if swallowed R26 - Very Toxic by inhalation R36/38 - Irritating to eyes and skin. R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S28 - After contact with skin, wash immediately with plenty of soap-suds. S36/37 - Wear suitable protective clothing and gloves. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S60 - This material and its container must be disposed of as hazardous waste. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
| UN IDs | UN 2922 |
BT-25 - Nature
Open Data Verified Data
light yellow transparent flammable liquid. The relative density was 1. 066. Freezing point 8 ℃. Density 1. 0425kg/L, flash point 226.7 ℃. Soluble in acetone and benzene, insoluble in water.
Last Update：2025-06-10 22:55:16
BT-25 - Preparation Method
Open Data Verified Data
ethyl iodide is produced by the reaction of butanol with iodine and phosphorus. Iodoethane reacts with tin powder and magnesium powder to produce iodobutyltin, which is refined and treated with caustic soda to obtain dibutyltin oxide. Dibutyltin oxide and lauric acid are condensed at 60 °c to form dibutyltin laurate.
Last Update：2022-01-01 10:54:24
BT-25 - Application
Open Data Verified Data
This product is PVC plastic additives, with excellent lubricity, transparency and weather resistance. Resistance to sulfide pollution is better, but the heat resistance is poor. It acts as a primary stabilizer in soft transparent articles and as a lubricant in hard transparent articles. This product is also used as a catalyst for the synthesis of polyurethane foam, silicone rubber curing agent.
Last Update：2025-08-19 16:24:40
BT-25 - Safety
Open Data Verified Data
This product is toxic. The maximum allowable concentration in air is 0.1 mg/m3. See dibutyltin oxide. Packed in tinplate barrels. Do not mix with acid, alkali, should be away from organic solvents. Protection against heat, moisture and sun. According to the provisions of toxic substances storage and transportation.
Last Update：2025-06-10 22:55:16
BT-25 - Introduction
Nature:
1. Dibutyltin dilaurate is a colorless to light yellow liquid with strong organic tin catalytic activity.
2. Soluble in organic solvents such as alcohols, ketones, and aromatics, but insoluble in water.
Usage:
1. As a catalyst for organic synthesis, it promotes polymerization and ester exchange reactions.
2. Used as a catalyst and stabilizer for polyester and polyurethane.
3. Used as a curing agent for vulcanized rubber.
4. Used as a flame retardant in polymer processing.
Method:
Dibutyltin dilaurate is usually obtained by reacting dilaurate with dibutyltin oxide.
Security information:
1. Due to its high toxicity as an organic tin compound, dibutyltin dilaurate may pose a threat to human health and the environment.
2. Avoid contact with skin and eyes, wear personal protective equipment and ensure good indoor ventilation.
3. Strictly follow the operating procedures, avoid inhaling steam or dust, and thoroughly clean contaminated skin with soap and water after operation.
4. Do not discharge waste and residues into the environment, dispose of waste in a safe manner.
5. It should be stored properly and kept away from sources of fire and flammable materials.
6. If any discomfort occurs during use, it should be immediately stopped and medical assistance sought.
Last Update：2024-06-05 12:02:02
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View History
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