| Agent Name | Maleic hydrazide |
|---|---|
| CAS Number | 123-33-1 |
| Formula | C4-H4-N2-O2 |
| Major Category | Pesticides |
| Synonyms | 2,3,6-Tetrahydro-3,6-dioxopyridazine; 1,2-Dihydro-3,6-pyradizinedione; 1,2-Dihydropyridazine-3,6-dione; 3(2H)-Pyridazinone, 6-hydroxy-; 3,6-Dihydroxypyridazine; 3,6-Dioxopyridazine; 3,6-Pyridazinediol; 3,6-Pyridazinedione, 1,2-dihydro-; 6-Hydroxy-2H-pyridazin-3-one; 6-Hydroxy-3(2H)-pyridazinone; Antergon; Antyrost; Burtolin; Chemform; De-cut; De-sprout; Drexel-super P; Fair 30; Fair PS; Fair plus; Fair-2; Fazor; Gotax; Hydrazid kyseliny maleinove [Czech]; Hydrazide maleique; Hydrazide maleique [ISO-French]; KMH; MAH; MG-T; MH; MH 30; MH 36 bayer; MH-40; Maintain 3; Malazide; Maleic acid cyclic hydrazide; Maleic acid hydrazide; Maleic hydrazide; Maleic hydrazine; Malein 30; Maleinsaeurehydrazid [German]; Malzid; Mazide; Milurit; N,N-Maleoylhydrazine; Regulox; Regulox 36; Regulox 50 W; Regulox W; Retard; Royal MH-30; Royal slo-gro; Slo-Gro; Sprout-stop; Sprout/off; Stuntman; Sucker-stuff; Super de-sprout; Super sprout stop; Super sucker-stuff; Super sucker-stuff HC; Super-de-sprout; Unriprim; Vondalhyde; Vondrax; [ChemIDplus] |
| Category | Plant Growth Regulators |
| Description | Colorless, crystalline solid; [HSDB] White solid; Formulated as emulsifiable concentrate and soluble concentrate (liquid and solid); [Reference #1] |
| Sources/Uses | Used as a herbicide and plant growth inhibitor, e.g., to control sucker growth on tobacco and to inhibit sprouting of potatoes and onions; [HSDB] A plant growth regulator and herbicide used to control sprouting of potatoes and onions, suckers in tobacco, and weeds, grasses, and trees in and along turf, ornamentals, public easements, and industrial and commercial land; [Reference #1] |
| Comments | Maleic hydrazide "may be hepatotoxic on ingestion." [Zimmerman, p. 393] The technical product is required to have no more than 15 ppm hydrazine contamination; The potassium salt (CAS# 28382-15-2) is also registered for use in the US; [Reference #1] |
| Reference Link | |
| Exposure Assessment | |
| Vapor Pressure | 2.77E-6 mm Hg |
| Lethal Concentration | LC50 (rat) >20,000 mg/m3 |
| Adverse Effects | |
| Hepatotoxin | Hepatotoxin, Secondary |
| IARC Carcinogen | Not Classifiable |
| Links to Other NLM Databases | |
| Health Studies | Human Health Effects from Hazardous Substances Data Bank: |
| Toxicity Information | |
| Chemical Information | |
| Related Information in HazMap | |
| Processes | Industrial Processes with risk of exposure: |
Agent Name
Maleic hydrazide
CAS Number
123-33-1
Formula
C4-H4-N2-O2
Major Category
Pesticides
Synonyms
2,3,6-Tetrahydro-3,6-dioxopyridazine; 1,2-Dihydro-3,6-pyradizinedione; 1,2-Dihydropyridazine-3,6-dione; 3(2H)-Pyridazinone, 6-hydroxy-; 3,6-Dihydroxypyridazine; 3,6-Dioxopyridazine; 3,6-Pyridazinediol; 3,6-Pyridazinedione, 1,2-dihydro-; 6-Hydroxy-2H-pyridazin-3-one; 6-Hydroxy-3(2H)-pyridazinone; Antergon; Antyrost; Burtolin; Chemform; De-cut; De-sprout; Drexel-super P; Fair 30; Fair PS; Fair plus; Fair-2; Fazor; Gotax; Hydrazid kyseliny maleinove [Czech]; Hydrazide maleique; Hydrazide maleique [ISO-French]; KMH; MAH; MG-T; MH; MH 30; MH 36 bayer; MH-40; Maintain 3; Malazide; Maleic acid cyclic hydrazide; Maleic acid hydrazide; Maleic hydrazide; Maleic hydrazine; Malein 30; Maleinsaeurehydrazid [German]; Malzid; Mazide; Milurit; N,N-Maleoylhydrazine; Regulox; Regulox 36; Regulox 50 W; Regulox W; Retard; Royal MH-30; Royal slo-gro; Slo-Gro; Sprout-stop; Sprout/off; Stuntman; Sucker-stuff; Super de-sprout; Super sprout stop; Super sucker-stuff; Super sucker-stuff HC; Super-de-sprout; Unriprim; Vondalhyde; Vondrax; [ChemIDplus]
Category
Plant Growth Regulators
Description
Colorless, crystalline solid; [HSDB] White solid; Formulated as emulsifiable concentrate and soluble concentrate (liquid and solid); [Reference #1]
Sources/Uses
Used as a herbicide and plant growth inhibitor, e.g., to control sucker growth on tobacco and to inhibit sprouting of potatoes and onions; [HSDB] A plant growth regulator and herbicide used to control sprouting of potatoes and onions, suckers in tobacco, and weeds, grasses, and trees in and along turf, ornamentals, public easements, and industrial and commercial land; [Reference #1]
Comments
Maleic hydrazide "may be hepatotoxic on ingestion." [Zimmerman, p. 393] The technical product is required to have no more than 15 ppm hydrazine contamination; The potassium salt (CAS# 28382-15-2) is also registered for use in the US; [Reference #1]
Reference Link
Exposure Assessment
Vapor Pressure
2.77E-6 mm Hg
Lethal Concentration
LC50 (rat) >20,000 mg/m3
Adverse Effects
Hepatotoxin
Hepatotoxin, Secondary
IARC Carcinogen
Not Classifiable
Links to Other NLM Databases
Toxicity Information
Chemical Information
Related Information in HazMap