Supplier Related Products Identification Chemical Properties Safety Data Raw materials And Preparation Products Hazard Information Material Safety Data Sheet(MSDS) Well-known Reagent Company Product Information
WebSite >  CAS DataBase List  > 79-21-0

79-21-0

Supplier Related Products Identification Chemical Properties Safety Data Raw materials And Preparation Products Hazard Information Material Safety Data Sheet(MSDS) Well-known Reagent Company Product Information

Product Image

Identification

Name
Peroxyacetic acid
CAS
79-21-0
Synonyms
acetic peroxide
ACETYL HYDROPEROXIDE
ethaneperoxoic acid
Osbon AC
PERACETIC ACID
PEROXYACETIC ACID
4,4'-Di(methoxy)-azobenzene
Acide peracetique
acideperacetique
acideperacetique(french)
acideperoxyacetique(french)
acidoperoxiacetico
caswellno.644
CH3C(O)OOH
Desoxon 1
desoxon1
epapesticidechemicalcode063201
Estosteril
Ethanperoxosαure
Hydroperoxide, acetyl
EINECS(EC#)
201-186-8
Molecular Formula
C2H4O3
MDL Number
MFCD00002128
Molecular Weight
76.05
MOL File
79-21-0.mol

Chemical Properties

Appearance
colourless liquid with an acrid odour
mp 
-44 °C
bp 
105 °C
density 
1.19 g/mL at 20 °C

refractive index 
n20/D 1.391

Fp 
41 °C
storage temp. 
2-8°C

Stability:
Unstable-may explode on heating. May react violently with organic materials. Incompatible with strong oxidizing agents, acetic anhydride, alkenes, organics.
Water Solubility 
soluble, >=10 g/100 mL at 19 ºC
Merck 
13,7229
CAS DataBase Reference
79-21-0(CAS DataBase Reference)
NIST Chemistry Reference
Ethaneperoxoic acid(79-21-0)
EPA Substance Registry System
79-21-0(EPA Substance)

Safety Data

Hazard Codes 
O,C,N
Risk Statements 
R7:May cause fire.
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed .
R35:Causes severe burns.
R50:Very Toxic to aquatic organisms.
R10:Flammable.
R34:Causes burns.
R22:Harmful if swallowed.
R20:Harmful by inhalation.
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S3/7:Keep container tightly closed in a cool place .
S23:Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer) .
S14:Keep away from ... (incompatible materials to be indicated by the manufacturer) .
S60:This material and/or its container must be disposed of as hazardous waste .
S9:Keep container in a well-ventilated place .
S7:Keep container tightly closed .
S3:Keep in a cool place .
RIDADR 
UN 3109 5.2

WGK Germany 
2

RTECS 
SD8750000


4.4-8
HazardClass 
5.2
PackingGroup 
II
HS Code 
29159000
Safety Profile
Poison by ingestion. Moderately toxic by inhalation and skin contact. A corrosive eye, sktn, and mucous membrane irritant. Questionable carcinogen with experimental tumorigenic data by skin contact. Flammable liquid. Severe explosion hazard when exposed to heat or by spontaneous chemical reaction. Explodes violently at 1 10°C. A powerful oxidizing agent. Explosive reaction with acetic anhydride, 5-p-chlorophenyl-2,2-dimethyl-3hexanone. Violent reaction with ether solvents (e.g., tetrahydrofuran, diethyl ether), metal chloride solutions (e.g., calcium chloride, potassium chloride, sodium chloride), olefins, organic matter. Dangerous; keep away from combustible materials. When heated to decomposition it emits acrid smoke and irritating fumes. To fight fire, use water, foam, CO2. Used as a polymerization initiator, curing agent, and cross-linhng agent. See also PEROXIDES, ORGANIC.
Hazardous Substances Data
79-21-0(Hazardous Substances Data)

Raw materials And Preparation Products

Hazard Information

General Description
Colorless liquid with a strong, pungent acrid odor. Used as a bactericide and fungicide, especially in food processing; as a reagent in making caprolactam and glycerol; as an oxidant for preparing epoxy compounds; as a bleaching agent; a sterilizing agent; and as a polymerization catalyst for polyester resins.
Reactivity Profile
Self-reactive. Peracids should be handled only in small quantities and with extreme care when pure or very concentrated. Organic peracids, such as PERACETIC ACID(79-21-0), are so unstable that they may explode during distillation, even under reduced pressure [NFPA 1991].
Air & Water Reactions
Soluble in water
Health Hazard
This is a very toxic compound. The probable human oral lethal dose is 50-500 mg/kg, or between 1 teaspoon and 1 ounce for a 150 pound person.
Fire Hazard
Decomposes violently at 230F. When heated to decomposition, this compound emits acrid smoke and fumes. Runoff to sewer may create a fire or explosion hazard. Powerful oxidizer. Isolate from other stored material, particularly accelerators, oxidizers, and organic or flammable materials. Avoid shock and heat. Hazardous polymerization may not occur.

Material Safety Data Sheet(MSDS)

Well-known Reagent Company Product Information