Last updated: 02/11/2023 02:01:16

OXYGEN SCAVENGER 25 LTR(9002)

Product group:: 655
Product number:: 777712

NALFLEET™ Oxygen scavenger 9-002™ is a liquid oxgen scavenger based on Carbohydrazide.

Product information

This product supersedes product no: 777030

Features

Safe form of hydrazine specifically formulated to reduce handling problems associated with hydrazine solutions
Does not add dissolved solids to the treated water
Does not require special feeding equipment for safe application
Maintains a protective surface layer of magnetite

Benefits

Economical in use
Reduces corrosion of iron and copper, increasing system life and reliability
Passivates metal in the boiler

Specification

General

Invent Hazard Material (IMO/EU) classification	C-9

Physical properties

Appearance	Pale Yellow
Density [g/ml]	1.015 to 1.030
Form	Liquid
Materials compatibility	Aluminium, Buna –N, EPDM, Hypalon, Neoprene, Polyethylene, Polypropylene, Polyurethane, Plasite 600q, Plasite 7122, PVC, Stainless Steel 304 (may discolour), Stainlesss Steel 316 (may discolour), Teflon, Vinyl Tubing, Viton
pH	8.0 to 9.0

Technical data

Not Compatible	Brass, Carbon Steel, Nickel, Plasite 4005.

Safety Data Sheet (SDS)

Documents

(PDF) SDoC and MD for IHM

Directions for use

NALFLEET™ Oxygen Scavenger 9-002 is used in feedwater and condensate systems to scavenge oxygen and maintain passive metal surfaces. It reacts with the oxide film on steel surfaces in a boiler system to form a magnetite layer which gives metal protection. This "passivation" technique is useful for pretreatment of new boiler plant and for protection of boilers during idle and storage periods.

Dosing Method
NALFLEET™ Oxygen Scavenger 9-002 must be added continuously by means of a chemical pump at the earliest practicable point in the feed system e.g. the deaerator storage or condenser extraction pump discharge.

Sampling and Testing
NALFLEET™ Oxygen Scavenger 9-002 may be used in all types of boilers operating at pressures up to 2700 psig but is particularly suitable for use at high pressure where oxygen corrosion becomes rapid and where the deposition of metallic corrosion products can quickly lead to overheating and failure of generating tubes.

Dosing and Control
NALFLEET™ Oxygen Scavenger 9-002 can be fed neat or in any convenient dilution. Dilution should be carried out using condensate or de-aerated water. Polyethylene and stainless steel (type 304 & 316) are compatible materials for solution tanks and it is recommended that one or more layers of "Allplas" balls be used to minimise the reaction of NALFLEET™ Oxygen Scavenger 9-002 with air.


CARBOHYDRAZIDE (HYDRAZINE) TEST RESULT ppm
Boiler Pressure	Control Range	0-0.05ppm	0.05-0.20	0.20-0-.50
<18 to 31 bar	0.05-0.2 ppm	Increase dose 25%	Satisfactory Maintain dose	Decrease dose 25%
31 to 42 bar	0.05-0.2 ppm	Increase dose 25%	Satisfactory Maintain dose	Decrease dose 25%