Ammonium sulfamate

Ammonium sulfamate

Names
IUPAC name Ammonium sulfamate
Other names Ammonium sulphamate Ammate herbicide Ammonium amidosulfonate
Identifiers
CAS Number	7773-06-0 Y
3D model (JSmol)	Interactive image
ChemSpider	22890 Y
ECHA InfoCard	100.028.974
KEGG	C18773 Y
PubChem CID	24482
RTECS number	WO6125000
InChI InChI=1S/H3NO3S.H3N/c1-5(2,3)4;/h(H3,1,2,3,4);1H3 Y Key: GEHMBYLTCISYNY-UHFFFAOYSA-N Y InChI=1/H3NO3S.H3N/c1-5(2,3)4;/h(H3,1,2,3,4);1H3 Key: GEHMBYLTCISYNY-UHFFFAOYAI
SMILES [O-]S(=O)(=O)N.[NH4+]
Properties
Chemical formula	H6N2O3S
Molar mass	114.125 g/mol
Appearance	White solid hygroscopic
Density	1.8 g/cm3
Melting point	131 °C (268 °F; 404 K)
Boiling point	160 °C (320 °F; 433 K) (decomposes)
Solubility in water	very soluble
Solubility	soluble in glycerol, glycol, formamide insoluble in methanol, ether, n-octanol
Acidity (pKa)	6
Hazards
Main hazards	Irritant
Safety data sheet	ICSC 1555
NFPA 704	0 2 0
Flash point	Non-flammable
Lethal dose or concentration (LD, LC):
LD50 (median dose)	2000 mg/kg (oral, rat) 3100 mg/kg (oral, mouse) 3900 mg/kg (oral, rat) 5760 mg/kg (oral, mouse)
US health exposure limits (NIOSH):
PEL (Permissible)	TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp)
REL (Recommended)	TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp)
IDLH (Immediate danger)	1500 mg/m3
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y  (what is YN ?)
Infobox references

Ammonium sulfamate (British spelling Ammonium sulphamate) is a white crystalline solid, readily soluble in water. It is commonly used as a broad spectrum herbicide, with additional uses as a compost accelerator, flame retardant and in industrial processes.

It is a salt formed from ammonia and sulfamic acid.

Ammonium sulfamate is distributed under the following tradenames, which are principally herbicidal product names: Amicide, Amidosulfate, Ammate, Amcide, Ammate X-NI, AMS, Fyran 206k, Ikurin, Sulfamate, AMS and Root-Out.

Ammonium sulfamate is considered to be particularly useful in controlling tough woody weeds, tree stumps and brambles.

Ammonium sulfamate has been successfully used in several major UK projects by organisations like the British Trust for Conservation Volunteers, English Heritage, the National Trust, and various railway, canal and waterways authorities.

Several years ago the Henry Doubleday Research Association (HDRA) (known as Garden Organic), published an article on ammonium sulfamate after a successful set of herbicide trials. Though not approved for use by organic growers it does provide an option when alternatives have failed.

The following problem weeds / plants can be controlled: Japanese Knotweed (Fallopia japonica var japonica), Marestail / Horsetail (Equisetum), Ground-elder (Aegopodium podagraria), Rhododendron ponticum, Brambles, Brushwood, Ivy (Hedera species), Senecio/Ragwort, Honey fungus (Armillaria), and felled tree stumps and most other tough woody specimens.