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."

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

1 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

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Related Information in HazMap
Other Information

No other related information on this agent was found.