Ningxia Dadi PVA | Polyvinyl Alcohol Manufacturer & Supplier

Specifications

	Alcoholysis %	Purity %	Volatile matter %	Viscosity (mpa.s)	Sodium acetate %	PH
1799	≥99.0	≥90.0	≤7.0	22-31	≤2.0	-
2099	≥99.0	≥92.0	≤5.0	41-55.9	≤2.0	-
2499	≥99.0	≥90.0	≤7.0	65-79.9	≤2.0	-
2699	≥99.0	≥90.0	≤7.0	≥80	≤2.0	-
1788	86.0-88.9	92	5	20～34.9	on-the-spot survey	5～7
2088	86.0-88.9	92	5	35～44.9	on-the-spot survey	5～7
2488	86.0-88.9	92	5	45～54.9	on-the-spot survey	5～7
2688	86.0-88.9	90	5	≥55	on-the-spot survey	5～7

Packing & Storage

Packing	In 20kg bag.
Storage	Close, protect from light, ventilated and dry, cool, do not mix storage.
Shipping	Equipped with appropriate varieties and quantities of fire-fighting equipment.

General Information

Chemical & Physical Properties	Safety Information	Synthetic Route
Common Names	Poly(vinyl alcohol)
Structure
CAS No.	9002-89-5	Boiling Point(℃)	23.5±13.0 °C
Molecular Weight	44.053	Melting Point(℃)	230-240ºC
Appearance	White or cream coloured solid	Vapor Specific Gravity	/
HS Code	3905300000	Flash Point(℃)	-28.3±12.8 °C
Solubility	soluble in hot water	Autoignition Temperature(℃)	/
Safety Phrases	S24/25
RIDADR	NONH for all modes of transport
WGK Germany	1
Packaging Group	None
Hazard Class	None

	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Harmful to health	Filtered Dust Masks，air ventilator	Oxygen, seek medical attention.
Skin	Irritate	Wear anti-poison penetration coveralls	Remove contaminated clothing and rinse with running water.
Eyes	Irritate	Wear chemical safety glasses	Lift eyelids and rinse with running water or saline. Seek medical attention.
Ingestion	Harmful to health	Smoking is strictly prohibited on the work site. Maintain good hygiene practices.	Drink plenty of warm water and induce vomiting. Seek medical attention.
Firstly, each polyvinyl acetate is made by solution polymerisation, and then the resulting polyvinyl acetate is hydrolysed rapidly in methanol, ethanol or a mixture of ethanol and methyl acetate using alkali metal or acid-free as a catalyst. Alcoholysis is carried out to obtain polyvinyl alcohol

Frequently Asked Questions

Introduction

Founded in 2002, Ningxia Earth Circle Development Co., Ltd. is recognized as one of the 60 leading enterprises in Ningxia, a pivotal representative of circular economy in the region, and a prominent player among China's private and chemical industry top 500 enterprises. It ranks third among Ningxia's private enterprises. In 2017, it was recognized by the Ministry of Industry and Information Technology of China as one of the first batch of "Green Manufacturing Demonstration Enterprises." In 2019, it was listed by the regional Industrial and Information Technology Department as one of the second batch of "Resource Comprehensive Utilization Demonstration Enterprises." Its PVA and other products were hailed as "Leading Demonstration Products" in 2019.

Advantage

In the production of PVA, the company primarily utilizes self-supplied raw materials, embracing a circular utilization and green development model. Additionally, it has formed a circular industrial chain with its affiliated subsidiaries in the carbide chemical industry, significantly reducing costs and pioneering an innovative model of comprehensive utilization of circular economy resources. Recognized by five key ministries and commissions, including the National Development and Reform Commission and the National Energy Administration, the company has been listed as one of the thousand national energy-saving pilot units. It has also been designated as a key resource-saving and environment-friendly enterprise by the five ministries and commissions, including the National Development and Reform Commission, the Ministry of Industry and Information Technology, and the Energy Office. Moreover, the company has been named a pilot unit for circular economy by the regional government. In 2017, it was awarded the title of "First Batch of Green Manufacturing System Demonstration Enterprise" by the Department of Energy Saving and Comprehensive Utilization of the Ministry of Industry and Information Technology.