Basic information
- Name:
Sodium persulfate
- CAS No.:
7775-27-1
- Molecular Structure:
- Formula:
- Na2S2O8
- Molecular Weight:
- 238.10
- Deleted CAS:
- 872981-99-2
- Synonyms:
- Persulfate de sodium [French];Sodium persulfate [UN1505] [Oxidizer];Peroxydisulfuric acid (((HO)S(O)2)2O2), disodium salt;Peroxydisulfuric acid, disodium salt;Disodium peroxodisulphate;Sodium peroxydisulfate;Natriumpersulfat;Sodium Persulfate(SPS);Sodium persulphate(SPS);sodium persulfate(persulphate);
- EINECS:
- 231-892-1
- Density:
- 2,4 g/cm3
- Melting Point:
- 100 °C
- Solubility:
- 550 g/L (20 °C) in water
- Appearance:
- white crystalline powder
- Hazard Symbols:
O, 
Xn- Risk Codes:
- 8-22-42/43-36/37/38
- Safety Description:
- 22-36/37-45-36/37/39-26-17 Details
- Transport Information:
- UN 1505 5.1/PG 3
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Chemistry
Molecular Structure:
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Molecular Formula: Na2O8S2
Molecular Weight: 238.1047
IUPAC Name: Disodium sulfonatooxy sulfate
Synonyms of Sodium persulfate (CAS NO.7775-27-1): Peroxydisulfuric acid, disodium salt ; Sodium peroxydisulfate ; EINECS 231-892-1 ; Persulfate de sodium ; Persulfate de sodium [French] ; Disodium peroxodisulphate ; Peroxydisulfuric acid (((HO)S(O)2)2O2), disodium salt ; Peroxydisulfuric acid (((HO)S(O)2)2O2), sodium salt (1:2) ; Peroxydisulfuric acid, disodium salt ; Sodium persulfate [UN1505] [Oxidizer] ; UN1505
CAS NO: 7775-27-1
Classification Code: TWA 0.1 mg/m3
Melting point: 100 °C
H bond acceptors: 8
H bond donors: 2
Freely Rotating Bonds: 3
Polar Surface Area: 143.96 Å2
Density: 2,4 g/cm3
Solubility: H2O: 1 M at 20 °C, clear, colorless
Water Solubility: 550 g/L (20 ºC)
Merck: 14,8656
Stability: Stability Unstable. Strong oxidizer. Contact with combustible material may cause fire. Incompatible with combustible material, strong reducing agents, strong bases, alcohols, aluminium, magnesium. Protect from moisture.
Uses
Sodium persulfate (CAS NO.7775-27-1) can be used in medicine, bleaching, batteries, and chemical reagents: It can be used as a oxidizing agent in chemistry, for example in a synthesis of diapocynin from apocynin where iron(II) sulfate is the radical initiator. It is uesed as a bleach, both standalone (particularly in hair cosmetics) and as a detergent component. It is a replacement for ammonium persulfate in etching mixtures for ZINC and printed circuit boards, and is used for pickling of copper and some other metals. It is also a source of free radicals, making it useful as a radical initiator for emulsion polymerization reactions and for accelerated curing of low FORMALDEHYDE adhesives. It is also used as a soil conditioner and in manufacture of dyestuffs, modification of starch, bleach activator, desizing agent for oxidative desizing, etc.
Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| mouse | LD50 | intraperitoneal | 226mg/kg (226mg/kg) | Comptes Rendus Hebdomadaires des Seances, Academie des Sciences. Vol. 257, Pg. 791, 1963. | |
| rabbit | LDLo | intravenous | 178mg/kg (178mg/kg) | "Merck Index; an Encyclopedia of Chemicals, Drugs, and Biologicals", 11th ed., Rahway, NJ 07065, Merck & Co., Inc. 1989Vol. 11, Pg. 1366, 1989. |
Consensus Reports
Reported in EPA TSCA Inventory.
Safety Profile
Hazard Codes Sodium persulfate (CAS NO.7775-27-1): 
O,
Xn
Risk Statements: 8-22-42/43-36/37/38
R8: Contact with combustible material may cause fire.
R22: Harmful if swallowed.
R42/43: May cause sensitization by inhalation and skin contact.
R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements: 22-45-36/37/39-26-17
S22: Do not breathe dust.
S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection.
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S17: Keep away from combustible material.
RIDADR: UN 1505 5.1/PG 3
WGK Germany: 1
RTECS: SE0525000
HazardClass: 5.1
PackingGroup: III
Poison by intraperitoneal and intravenous routes. A powerful oxidizer; can cause fires. When heated to decomposition it emits toxic fumes of SOx and Na2O. See also SULFATES.
Standards and Recommendations
ACGIH TLV: TWA 0.1 mg/m3
DOT Classification: 5.1; Label: Oxidizer