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Intermediates/Pharmaceutical intermediates |
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no data |
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Price:
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no data |
Packing: |
no data |
Uses: |
In manufacture of unsaturated polyester; as plasticizer, surface-active agent, emulsifier/de-emulsifier, fungicide, aseptic, defoaming agent, antifreezing agent, etc. |
Usages: |
no data |
| Propylene Glycol Description: CAS No.: 57-55-6
Molecular weight: 76.095
Property: Clear colorless viscous liquid, sweet, odorless, hygroscopic, miscible with water, ethanol and commonly used organic solvents.
| Tests |
USP Specifications |
EP Specifications |
Description
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Appearance |
Colorless, viscous, clear hygroscopic liquid |
Colorless, viscous, clear hygroscopic liquid |
| Identification |
IR test |
Refractive index: 1.431-1.433
Boiling point: 184-189癈
Melting point of residue: 123-128癈 |
| Assay (Purity) |
99.5% min |
99.5% min |
| Specific gravity |
1.035-1.037 g/cm3 at 25癈 |
1.035-1.040 g/cm3 at 20癈 |
| Index of refraction |
1.431-1.433 nD20 |
1.431-1.433 nD20 |
| Acidity |
≤0.20ml of 0.10 N NaOH |
≤0.05ml of 0.10 N NaOH |
| Water/Moisture |
0.2% max |
0.2% max |
| Residue on ignition |
3.5 mg max |
5 mg max |
| Sulfate |
≤0.30ml of 0.020 N
sulfuric acid (0.006%) |
Not required |
| Chloride |
≤0.10ml of 0.020N HCl (0.007%) |
Not required |
| Heavy metals |
5 ppm max |
5 ppm max(M/V) |
Oxidizing
substances |
Not required |
≤0.2ml Sodium thiosulfate 0.05 M |
Reducing
substances |
Not required |
The solution is not yellow colored |
Organic volatile
impurities |
a. Chloroform: 60 ppm
b. 1,4-dioxane: 380 ppm
d. Methylene chloride: 600 ppm
d. Trichloroethylene: 80 ppm
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Not required |
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 Other products from this supplier |
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| Contact Us |
| DOWELL International Co., Ltd. |
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