| CAS
NO. |
57-55-6 |
|
| EINECS
NO. |
200-338-0 |
| FORMULA |
CH3CHOHCH2OH |
| MOL
WT. |
76.10 |
|
H.S.
CODE
|
2905.39 |
| TOXICITY |
Oral rat LD50: 20000 mg/kg |
| SYNONYMS |
Methylethyl glycol;
Methylethylene glycol; |
| 1,2-Propanediol; alpha-Propylene glycol; Methyl glycol; Monopropylene glycol; PG; 1,2-Dihydroxypropane; 1,2-Propylene Glycol; 2-Hydroxypropanol; 2,3-Propanediol;
Propane-1,2-diol; Trimethyl glycol;
1,2-Propylenglykol; Isopropylene
glycol; |
|
CLASSIFICATION
|
|
|
PHYSICAL
AND CHEMICAL PROPERTIES
|
| PHYSICAL
STATE |
Clear liquid |
| MELTING
POINT |
-
59 C |
| BOILING
POINT |
185
- 189 C |
| SPECIFIC
GRAVITY |
1.036 |
| SOLUBILITY
IN WATER |
Miscible |
| pH |
|
| VAPOR
DENSITY |
2.6 |
|
AUTOIGNITION
|
510
C
|
|
NFPA
RATINGS
|
Health: 0; Flammability: 1; Reactivity: 0 |
|
REFRACTIVE
INDEX
|
1.4310
- 1.4340
|
| FLASH
POINT |
130
C |
| STABILITY |
Stable
under ordinary conditions. |
|
GENERAL
DESCRIPTION & APPLICATIONS
|
|
Glycol: any of a class of organic chemicals characterized by having separate two
hydroxyl (-OH) groups, contribute to high water solubility, hygroscopicity and
reactivity with many organic compounds, on usually linear and aliphatic carbon
chain. The general formula is CnH2n(OH)2 or
(CH2)n(OH)2. The wider meaning names
include diols, dihydric alcohols, and dihydroxy alcohols. Polyethylene glycols
and polypropylene glycols are sometimes called polyglycols which are derived by
polymerization of ethylene oxide and propylene oxide respectively. Polyethylene
glycols are water-soluble at all molecular weights, but polypropylene glycols
become increasingly less water-soluble at high molecular weights. Mono-, di- and
tripropylene glycol, the first three members of a homologous series of propylene
glycol, are completely water and ethanol soluble; miscible with most organic
solvents including acetone, chloroform and some essential oils; soluble in 12
parts of ether. Propylene glycol is an odorless and colorless liquid; boiling
point 188 C, freezing point -39 C. Propylene glycol is prepared by hydrolysis of
propylene oxide. Large amount of propylene glycol is used in the plastics
industry for the manufacture of polyester fibers and alkyd resins. It is
used as a main ingredient in automobile antifreeze and engine-cooling liquids
and in brake and hydraulic fluids due to its useful properties of low freezing
point, involatility and low corrosive activity. It is used in the preparation of
body-care surfactants. Propylene glycol is replacing ethylene glycol and ethanol
as it is less toxic than ethylene glycol. Propylene glycol is described as a
"generally recognized as safe for use in food, cosmetics, and medicines" by
FDA. Propylene glycol USP grade is used as a non-toxic antifreeze in breweries
and dairies. It is used as a humectant in foods and cosmetics. It is used as a
solvent for colouring or flavouring agents as well as in many
oral, injectable or topical pharmaceuticals. Its
antibacterial property is applied in the preparation of sanitizing lotions. |
SALES
SPECIFICATION |
|
INDUSTRIAL
GRADE
|
|
APPEARANCE
|
Clear liquid |
|
ASSAY |
99.0%
min |
|
WATER |
0.2%
max
|
|
COLOR |
10max (Pt/Co
Scale)
|
|
SPECIFIC
GRAVITY |
1.035
- 1.037 |
|
DISTILL RANGE |
185
C (IBP) - 190 C (DP)
|
|
REFRACTIVE
INDEX
|
1.4310
- 1.4340
|
|
RESIDUE
ON IGNITION
|
0.005%
max
|
|
CHLORIDES
|
1ppm
max
|
|
ARSENIC
|
1ppm
max
|
|
HEAVY
METALS
|
5ppm
max
|
|
IRON
|
1ppm
max
|
|
SULFATE
|
0.006%
max
|
|
USP
GRADE
|
|
APPEARANCE
|
Clear liquid |
|
ASSAY |
99.7%
MIN
|
|
WATER |
0.2%
max
|
|
COLOR |
10max (Pt/Co
Scale)
|
|
SPECIFIC
GRAVITY |
1.035
- 1.037 |
|
DISTILL RANGE |
185
C (IBP) - 189 C (DP)
|
|
REFRACTIVE
INDEX
|
1.4310
- 1.4320
|
|
RESIDUE
ON IGNITION
|
0.0035%
max
|
|
CHLORIDES
|
1ppm
max
|
|
ARSENIC
|
1ppm
max
|
|
HEAVY
METALS
|
5ppm
max
|
|
IRON
|
0.5ppm
max
|
|
SULFATE
|
100ppm
max
|
|
TRANSPORTATION
|
| PACKING |
210kgs
in drum |
| HAZARD
CLASS |
Not
regulated |
| UN
NO. |
|
| OTHER
INFORMATION |
|
Hazard Symbols: n/a, Risk Phrases: n/a, Safety
Phrases: 24/25 |
|
PRICE
INFORMATION |