Monomethyltin tris(isooctyl mercaptoacetate)
Agent Name
Monomethyltin tris(isooctyl mercaptoacetate)
CAS Number
54849-38-6
Formula
C31-H60-O6-S3-Sn
Major Category
Metals
Synonyms
Acetic acid, 2,2',2''-((methylstannylidyne)tris(thio))tris-, triisooctyl ester; Methyltin S,S',S''-tris(isooctyl mercaptoacetate); Methyltin tris(isooctyl mercaptoacetate); Methyltin tris(isooctyl thioglycolate); Monomethyltin tris(isooctyl thioglycolate); Stannane methyltris((carboxymethyl)thio)tris isooctyl ester; Stannane, tris(((isooctylthio)acetyl)oxy)methyl-; [ChemIDplus] UN3146
Category
Tin Compounds, Organic
Description
Pale yellow liquid; [CAMEO]
Sources/Uses
Used as heat stabilizer for PVC resins; [HSDB]
Comments
Of the trialkyltins, triethyltin and trimethytin are the most toxic. Large alkyl chains reduce toxicity, so that trioctyltin compounds are essentially nontoxic. [ACGIH] No information available on health hazards; [CAMEO] Causes skin irritation in rabbits, but no eye irritation; [HSDB] See "Tin, organic compounds."
Biomedical References
Exposure Assessment
Skin Designation (ACGIH)
Yes
TLV (ACGIH)
0.1 mg/m3, as Sn
STEL (ACGIH)
0.2 mg/m3, as Sn
PEL (OSHA)
0.1 mg/m3, as Sn
MAK
0.02 mg/m3
IDLH (NIOSH)
25 mg/m3, as Sn
Explanatory Notes
The Guide in the Emergency Response Guidebook is for "Organotin compound, solid, n.o.s." Organic tin compounds have a "skin" designation and are classified as "A4" (Not classifiable as human carcinogen); [ACGIH]
Adverse Effects
ACGIH Carcinogen
Not Classifiable
Diseases, Processes, and Activities Linked to This Agent
Other Information
No other related information on this agent was found.