Acetic acid, glacial

  • Methanecarboxylic acid
  • Ethanoic acid
  • Ethylic acid
Formula
CH3COOH
Structure
Description
Clear, colorless liquid, odor of vinegar.
Uses
Herbicide, Microbiocide, Fungicide, pH Adjustment

Registry Numbers and Inventories.
CAS
64-19-7
EC (EINECS/ELINCS)
200-580-7
EC Index Number
607-002-00-6
EC Class
Flammable; Corrosive
R 10 35
S 23 26 45
RTECS
AF1225000
RTECS class
Mutagen; Reproductive Effector; Human Data; Primary Irritant
UN (DOT)
2789
Merck
13,56
Beilstein/Gmelin
506007
Beilstein Reference
4-02-00-00094
EPA OPP
44001
Swiss Giftliste 1
G-4595
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C2H4O2
Formula mass
60.05
Melting point, °C
16.6
Boiling point, °C
118
Vapor pressure, mmHg
11 (20 C)
Vapor density (air=1)
2.07
Saturation Concentration
1.5% (15000 ppm) at 20 C (calculated)
Evaporization number
0.97 (Butyl acetate = 1)
Odor Threshold Odor threshold 0.21 To 1.0 ppm
Critical temperature
321.6
Critical pressure
57.15
Density
1.05 g/cm3 (20 C)
Solubility in water
Miscible
Viscosity
1.06 cp (25 C)
Surface tension
28.8 g/s2 @ 10 C
Refractive index
1.3718 (20 C)
Dipole moment
1.5 D (20 C)
Dielectric constant
6.1 (20 C)
pKa/pKb
4.76 (pKa)
Partition coefficient, pKow
-0.17
Heat of fusion
11.7 kJ/mol
Heat of vaporization
52.30 kJ/mol
Heat of combustion
-873 kJ/mol

Hazards and Protection.
Storage
Protect against physical damage. Store in a cool, dry well-ventilated location, away from any area where the fire hazard may be acute. Outside or detached storage is preferred. Separate from incompatibles. Containers should be bonded and grounded for transfers to avoid static sparks. Storage and use areas should be No Smoking areas. Use non-sparking type tools and equipment, including explosion proof ventilation. Protect from freezing. Store above 17 C.
D2B
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Avoid contact with heat, sparks and flame. Do not get on skin or in eyes. Avoid ingestion and inhalation. Discard contaminated shoes. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
If the exposure limit is exceeded, a full facepiece respirator with organic vapor cartridge may be worn up to 50 times the exposure limit or the maximum use concentration specified by the appropriate regulatory agency or respirator supplier, whichever is lowest. For emergencies or instances where the exposure levels are not known, use a full-facepiece positive-pressure, air-supplied respirator. WARNING: Air purifying respirators do not protect workers in oxygen-deficient atmospheres.
Small spills/leaks
Use water spray to dilute spill to a non-flammable mixture. Avoid runoff into storm sewers and ditches which lead to waterways. Wash area with soap and water. Use water spray to disperse the gas/vapor. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation. Cover with material such as dry soda ash or calcium carbonate and place into a closed container for disposal. A vapor suppressing foam may be used to reduce vapors.
Stability
Stable at room temperature in closed containers under normal storage and handling conditions.
Incompatibilities
Chromic acid, nitric acid, ethylene glycol, perchloric acid, phosphorous trichloride, oxidizers, sodium peroxide, strong caustics, most metals (except aluminum), carbonates, hydroxides, oxides, and phosphates.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
40
Autoignition, °C
427
Upper exp. limit, %
16
Lower exp. limit, %
4
Fire fighting
Use water in flooding quantities as fog. Solid streams of water may be ineffective. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Use alcohol foam, dry chemical or carbon dioxide. Use water spray to knock-down vapors.
Fire potential
Moderately flammable. Will support combustion.
Hazards
Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers.
Combustion products
Irritating vapor generated when heated.
Health
3
 
Flammability
2
 
 
Reactivity
0
 

Health.
Exposure limit(s)
OSHA PEL: TWA 10 ppm (25 mg/m3) NIOSH REL: TWA 10 ppm (25 mg/m3) ST 15 ppm (37 mg/m3) NIOSH IDLH: 50 ppm
Poison_Class
4
Exposure effects
Prolonged or repeated skin contact may cause dermatitis. Repeated exposure may lead to blackening and hyperkeratosis of the skin and hands, conjunctivitis, bronchitis and pharyngitis and erosion of the teeth.
   Ingestion
Swallowing can cause severe injury leading to death. Symptoms include sore throat, vomiting, and diarrhea. Ingestion of as little as 1.0 ml has resulted in perforation of the esophagus.
   Inhalation
Effects may be delayed. Causes chemical burns to the respiratory tract. Exposure may lead to bronchitis, pharyngitis, and dental erosion. Inhalation of concentrated vapors may cause serious damage to the lining of the nose, throat, and lungs. Breathing difficulties may occur. Neither odor nor degree of irritation are adequate to indicate vapor concentration.
   Skin
Causes skin burns. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material. May be harmful if absorbed through the skin. Contact with the skin may cause blackening and hyperkeratosis of the skin of the hands.
   Eyes
Causes severe eye irritation. Contact with liquid or vapor causes severe burns and possible irreversible eye damage. Lachrymator.

First aid
 
   Ingestion
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
   Skin
Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Destroy contaminated shoes.
   Eyes
Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed. Extensive irrigation is required (at least 30 minutes).

Transport.
UN number
2789
Response guide
Hazard class
8
Packing Group
II
 
USCG CHRIS Code
AAC
 
HS Code
2915 21 00
 
Std. Transport #
4931401
 
IMO Chemical Code
17
IMO Pollution Category
D
IMO Hazard code
S