Agent Name

Methylmercuric dicyanamide

CAS Number

502-39-6

Formula

C3-H6-Hg-N4

Major Category

Metals

Synonyms

(Cyanoguanidino)methylmercury; Agrosol; Cyano(methylmercuri)guanidine; Guanidine, cyano(methylmercurio)-; Guanidine, cyano-, methylmercury deriv.; MMD; Mercury, (3-cyanoguanidino)methyl-; Mercury, (cyanoguanidinato(1-))methyl-; Mercury, (cyanoguanidinato)methyl-; Mercury, (cyanoguanidinato-N')methyl-; Mercury, (cyanoguanidine)methyl-; Methyl mercuric dicyandiamide; Methylmercuric cyanoguanidine; Methylmercuric dicyandiamide; Methylmercury dicyandiamide; Methylmercury dicyanodiamide; Methylmerkuridikyandiamid [Czech]; Morsodren; Morton EP-227; Morton Soil Drench; Morton Soil Drench-C; Morton Soil-Drench-C; N-Cyano-N'-(methylmercury)guanidine; Pandrinox; Pano-drench; Pano-drench 4; Panodrin A-13; Panogen; Panogen (old); Panogen 15; Panogen 43; Panogen 8; Panogen PX; Panogen turf fungicide; Panogen turf spray; Panospray 30; R 8; R 8 (fungicide); Zaprawa nasienna plynna; [ChemIDplus]

Category

Metals, Organic Compounds

Description

Colorless solid; [HSDB]

Sources/Uses

Formerly used as a fungicide for seed, soil, and turf treatment; Not currently registered with the EPA for use in the US; [HSDB]

Comments

Extremely toxic to the CNS; Lethal dose for humans is about 5-50 mg/kg; (As little as 7 drops for an adult;) Can cause skin burns; [CAMEO] Oral LD50 (rat) = 68 mg/kg; [ChemIDplus] Highly irritating to skin; [Sax]; Occupational exposure through inhalation or skin contact; [HSDB] See "Dimethylmercury." See "Mercury, alkyl compounds" and linked occupational diseases.

Restricted

No longer produced or used in the US; [HSDB]

Exposure Assessment
Skin Designation (ACGIH)

Yes

TLV (ACGIH)

0.01 mg/m3, as Hg

STEL (ACGIH)

0.03 mg/m3, as Hg

PEL (OSHA)

0.01 mg/m3, as Hg (Ceiling(OSHA) = 0.04 mg/m3, as Hg)

IDLH (NIOSH)

10 mg/m3, as Hg

Explanatory Notes

VP = 6.50 E-5 mm Hg at 35 deg C; [ChemIDplus]

Adverse Effects
Neurotoxin

Other CNS Neurotoxin

Nephrotoxin

Yes

Reproductive Toxin

Yes

Dermatotoxin

Skin Burns

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

Search ChemIDplus

Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: