Tetra-n-butyltin

  • Tetrabutyl stannane
Formula
(CH3CH2CH2CH2)4Sn
Structure
Description
Colorless liquid. Distinct, characteristic odor.
Uses
Stabilizing & rust-inhibiting agent for silicones, lubricant & fuel additive, polymerization catalyst, hydrochloric acid scavenger.

Registry Numbers and Inventories.
CAS
1461-25-2
EC (EINECS/ELINCS)
215-960-8
EC Class
irritant, dangerous for the environment
R 21 25 36/38 48/23/25 50/53
S 35 36/37/39 45 60 61
RTECS
WH8605000
RTECS class
Organometallic; Reproductive Effector; Primary Irritant
UN (DOT)
2788
Beilstein/Gmelin
3648237
Beilstein Reference
4-04-00-04312
Swiss Giftliste 1
G-3909
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C16H36Sn
Formula mass
347.16
Melting point, °C
-97
Boiling point, °C
145
Vapor pressure, mmHg
0.02 (25 C)
Vapor density (air=1)
12.0
Density
1.055 g/cm3 (25 C)
Solubility in water
Insoluble
Viscosity
2.61 cp (20 C)
Refractive index
1.47 (20 C)

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Use with adequate ventilation. Wash clothing before reuse.
Protection
Eyes: Wear chemical goggles and a face shield. Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear appropriate clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Scoop up with a nonsparking tool, then place into a suitable container for disposal. Remove all sources of ignition. Provide ventilation.
Disposal code
15
Stability
Stable at room temperature in closed containers under normal storage and handling conditions.
Incompatibilities
Oxidizing agents.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, tin/tin oxides.

Fire.
Flash Point,°C
>100
Autoignition, °C
265
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Containers may explode when heated. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog or alcohol-resistant foam. Do NOT use straight streams of water. Cool containers with flooding quantities of water until well after fire is out.
Fire potential
Combustible material: may burn but does not ignite readily.
Hazards
When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.
Combustion products
Toxic gases and vapors may be released in a fire involving organic tin compounds.
Health
2
 
Flammability
1
 
 
Reactivity
0
 

Health.
Exposure limit(s)
OSHA TWA: 0.1 mg/m3
Poison_Class
4
Exposure effects
Reproductive effects have been reported in animals. Repeated or prolonged exposure may cause CNS stimulation.
   Ingestion
Causes gastrointestinal irritation with nausea, vomiting and diarrhea. Ingested inorganic tin exhibits only moderate toxicity due to poor absorption and rapid tissue turnover. Ingestion of large amounts may cause gastrointestinal irritation, nausea, cramps, vomiting and diarrhea. May interfere with various enzyme systems.
   Inhalation
Causes respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
   Skin
Causes skin irritation.
   Eyes
Causes eye irritation.

First aid
 
   Ingestion
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
2788
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
HS Code
2931 00 95