Ammonium persulfate

Ammonium persulfate
Names
	Other names Ammonium peroxydisulfate;
Identifiers
CAS Number	7727-54-0 ;
3D model (JSmol)	Interactive image; Interactive image;
ChemSpider	56400 ;
ECHA InfoCard	100.028.897
EC Number	231-786-5;
E number	E923 (glazing agents, ...)
PubChem CID	62648;
RTECS number	SE0350000;
UNII	22QF6L357F ;
UN number	1444
CompTox Dashboard (EPA)	DTXSID9029691 ;
	InChI InChI=1S/2H3N.H2O8S2/c;;1-9(2,3)7-8-10(4,5)6/h21H3;(H,1,2,3)(H,4,5,6) Key: ROOXNKNUYICQNP-UHFFFAOYSA-N ; InChI=1/2H3N.H2O8S2/c;;1-9(2,3)7-8-10(4,5)6/h21H3;(H,1,2,3)(H,4,5,6) Key: ROOXNKNUYICQNP-UHFFFAOYAL;
	SMILES O=S(=O)([O-])OOS([O-])(=O)=O.[NH4+].[NH4+]; [NH4+].[NH4+].[O-]S(=O)(=O)OOS(=O)(=O)[O-];
Properties
Chemical formula	(NH4)2S2O8
Molar mass	228.18 g/mol
Appearance	white to yellowish crystals
Density	1.98 g/cm3
Melting point	120 °C (248 °F; 393 K) decomposes
Solubility in water	80 g/100 mL (25 °C)
Solubility	Moderately soluble in MeOH
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H272, H302, H315, H317, H319, H334, H335
Precautionary statements	P210, P221, P284, P305+P351+P338, P405, P501
NFPA 704 (fire diamond)	2 1 2 OX
Threshold limit value (TLV)	Airborne: 0.1 mg/m3 (TWA)
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	689 mg/kg (rat, oral);; 2,000 mg/kg (rat, dermal);; 2.95 mg/L for 4 hours (rat, inhalation)
Safety data sheet (SDS)	7727-54-0
Related compounds
Other anions	Ammonium thiosulfate; Ammonium sulfite; Ammonium sulfate
Other cations	Sodium persulfate; Potassium persulfate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Ammonium persulfate (APS) is the inorganic compound with the formula (NH₄)₂S₂O₈. It is a colourless (white) salt that is highly soluble in water, much more so than the related potassium salt. It is a strong oxidizing agent that is used as a catalyst in polymer chemistry, as an etchant, and as a cleaning and bleaching agent.

Names



Other names Ammonium peroxydisulfate
Identifiers
CAS Number	7727-54-0^Y
3D model (JSmol)	Interactive image Interactive image
ChemSpider	56400^Y
ECHA InfoCard	100.028.897
EC Number	231-786-5
E number	E923 (glazing agents, ...)
PubChem CID	62648
RTECS number	SE0350000
UNII	22QF6L357F^Y
UN number	1444
CompTox Dashboard (EPA)	DTXSID9029691
InChI InChI=1S/2H3N.H2O8S2/c;;1-9(2,3)7-8-10(4,5)6/h21H3;(H,1,2,3)(H,4,5,6)^Y Key: ROOXNKNUYICQNP-UHFFFAOYSA-N^Y InChI=1/2H3N.H2O8S2/c;;1-9(2,3)7-8-10(4,5)6/h21H3;(H,1,2,3)(H,4,5,6) Key: ROOXNKNUYICQNP-UHFFFAOYAL
SMILES O=S(=O)([O-])OOS([O-])(=O)=O.[NH4+].[NH4+] [NH4+].[NH4+].[O-]S(=O)(=O)OOS(=O)(=O)[O-]
Properties
Chemical formula	(NH₄)₂S₂O₈
Molar mass	228.18 g/mol
Appearance	white to yellowish crystals
Density	1.98 g/cm³
Melting point	120 °C (248 °F; 393 K) decomposes
Solubility in water	80 g/100 mL (25 °C)
Solubility	Moderately soluble in MeOH
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H272, H302, H315, H317, H319, H334, H335
Precautionary statements	P210, P221, P284, P305+P351+P338, P405, P501
NFPA 704 (fire diamond)	2 1 2 OX
Threshold limit value (TLV)	Airborne: 0.1 mg/m³ (TWA)
Lethal dose or concentration (LD, LC):
LD₅₀ (median dose)	689 mg/kg (rat, oral); 2,000 mg/kg (rat, dermal); 2.95 mg/L for 4 hours (rat, inhalation)
Safety data sheet (SDS)	7727-54-0
Related compounds
Other anions	Ammonium thiosulfate Ammonium sulfite Ammonium sulfate
Other cations	Sodium persulfate Potassium persulfate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is ^YN ?) Infobox references