China China High Quality L-Threonine Manufacturer - Mono Propylene Glycol – COLORKEM Manufacturer and Supplier

China High Quality L-Threonine Manufacturer - Mono Propylene Glycol – COLORKEM

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China High Quality L-Threonine Manufacturer - Mono Propylene Glycol – COLORKEM Detail:

Products Description

It is a colorless liquid with steady viscosity and good water absorption.
It is nearly odorless, uninflammable and minutely toxic. Its molecular mass is 76.09. Its viscosity (20oC), specific heat capacity (20oC) and latent heat of vaporization (101.3kpa) are respectively 60.5mpa.s, 2.49KJ/(kg. oC) and 711KJ/kg.
It can be mixed and solved with alcohol, water and various organic agents.
Propylene Glycol is the raw material for preparing unsaturated polyester resin, plasticizer, surface active agent, emulsifying agent and demulsifying agent.
It can also be used as mould inhibitor, antiseptic for fruit, ice inhibitor and moisture preserving agent for tobacco.

Product	PG	CAS No	57-55-6
Quality	99.5%+	Quantity:	1ton
Test Date	2018.6.20	Quality Standard
Testing Item	Quality Standard	Testing Method	Results
Color	Colorless	GB 29216-2012	Colorless
Appearance	Transparent Liquid	GB 29216-2012	Transparent Liquid
Density (25℃)	1.035-1.037		1.036
Assay %	≥99.5	GB/T 4472-2011	99.91
Water %	≤0.2	GB/T 6283-2008	0.063
Acid Assay, ml	≤1.67	GB 29216-2012	1.04
Burning residue %	≤0.007	GB/T 7531-2008	0.006
Pb mg/kg	≤1	GB/T 5009.75-2003	0.000

Application

(1) Propylene glycol is used as raw materials for resins, plasticizers, surfactants, emulsifiers and demulsifiers, as well as antifreeze and heat carriers.
(2) Propylene glycol is used as gas chromatography stationary liquid, solvent, antifreeze, plasticizer and dehydrating agent.
(3) Propylene glycol is mainly used for the extraction solvent of various spices, pigments, preservatives, vanilla bean, roasted coffee granule, natural flavor and so on. A moisturizing and softening agent for candy, bread, packaged meats, cheeses, etc.
(4) It can also be used as anti – mildew agent for noodle and filling core. Add 0.006% to soy milk, which can make the flavor unchanged when heating, and make white and glossy packaging bean curd.

Specification

Propylene Glycol Pharma Grade

ITEM	STANDARD
Color(APHA)	10max
Moisture%	0.2max
Specific Gravity	1.035-1.037
Refractive index	1.4307-1.4317
Distillation range (L),℃	184-189
Distillation range (U),℃	184-189
Distillation volume	95min
Identification	passed
Acidity	0.20max
Chloride	0.007max
Sulfate	0.006max
Heavy metals	5max
Residue on ignition	0.007max
Organic Volatile impurity Chloroform(µg/g)	60max
Organic Volatile impurity 1.4 dioxane(µg/g)	380max
Organic Voltile impurity methylene chloride(µg/g)	600max
Organic Voltile impurity trichloroethylene(µg/g)	80max
Assay	99.5min
Color(APHA)	10max
Moisture%	0.2max
Specific Gravity	1.035-1.037

Propylene glycol Tech Grade

ITEM	STANDARD
Color	=<10
Content (Weight %)	>=99.0
Moisture(Weight %)	=<0.2
Specific Gravity (25℃ )	1.035-1.039
Free Acid (CH3COOH) ppm)	=<75
Residue(ppm)	=<80
Distallation rang	184-189
Index of refraction	1.433-1.435

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