CAS No.: [26099-09-2]

Chemical name: Hydrolyzed polymaleic anhydride

Description: equivalent to FMC¡¡¥s Belcor-200

Specification:

Appearance: homogeneous orange or orange-brown clear liquid

Solid content: 48.0% min.

Number average molecular weight: 300 min.

Bromine number: 160 mg/g max.

Density (20¡ãC): 1.18 min.

PH (1% aqueous solution): 2.0 - 3.0

Packing: 220 kg drum

Usage:Usually used at a concentration of 2-3ppm together with phosphate, in systems like circulating cooling water, oilfield fill water, crude oil dewatering and inside-the-furnace trace treatment of low-pressure boilers. It has good scaling-prevention and descaling capability with scaling prevention rate of 98%. When it is used with 1-2ppm of zinc salts, it can effectively inhibit corrosion of carbon steel.

Hydrolyzed Polymaleic Anhydride (HPMA)

CAS No. : 26099-09-2

Properties
HPMA is a low molecular weight polymeride, with average molecular weight 400-800. No toxicity, soluble in water, high chemical and thermal stability, decomposed temperature above 330¡æ. HPMA has obvious threshold effect under high temperature (350¡æ) and high pH(8.3)level, suitable to be used in alkaline water system or built with agents. It has good scale inhibition against carbonate and phosphate scales under temperature 300¡æ with effective time as long as 100 hours. Due to its good scale inhibition and high temperature tolerance properties, HPMA is widely used in desalination plant of flash vaporization equipment, low pressure boiler, steam locomotive, crude oil evaporation, petroleum pipeline, and industrial circulating cool water systems. In addition, HPMA has good corrosion inhibition effect when used together with zinc salt. HPMA can also used as a...