Announcement: 2008 Fun Run at the Aquaculture Pacific Exchange in Campbell River

In the USA contact:

HALAMID® - the universal disinfectant

Superior storage stability

Halamid® [Sodium-N-Chloro-para-ToluenesuIfonchloramide (Chloramine-T)] is a universal, effective, readily biodegradable disinfectant with superior storage stability.

The quality of Halamid® is guaranteed one year after delivery if stored cool and dry.

Tests have shown that, if properly stored, Halamid® will not undergo significant changes in quality even after several years of storage.

In order to determine the storage stability of Halamid® under tropical conditions a test was performed at 35°C and 85% relative humidity.

25 kgs of Halamid® packed in its original 4 ply paper bag were placed in a constant climate cupboard for 120 days. During this period the weight and the content of the Halamid® were regularly checked.

After 120 days of storage at 35°C and 85% relative humidity the Halamid® packed in its original bag proved not to have been changed in weight or content.

A similar test was run but now with Halamid® in open contact with the humid air.

In the first 30 days of this experiment the weight of the Halamid® increased while the content declined. After that period the weight and content of the Halamid® were more or less stable.

The weight increase was caused by water adsorption which resulted in a content reduction exactly proportional to the content decrease analyzed. No decomposition of Halamid® could be detected.

All this proves that Halamid® is a product with superior storage stability even under non-ideal conditions.

Stable in solution even at elevated temperatures

Halamid® [Sodium-N-Chloro-para-ToluenesuIfonamide (Chloramine-T)] is a universal, effective, readily biodegradable disinfectant. As a solid it has superior storage stability. Packed in its original bag, pail or drum Halamid® will retain its quality for a prolonged period of time if properly stored. It is guaranteed for a one year after delivery but it is known to last for several years.

To do its work as a disinfectant Halamid® must be dissolved in water. Its aqueous solutions also show a remarkably good stability.

Figure 1 shows stability test results of a 5% Halamid® solution at 25°C. If stored in the dark or stored in a non-transparent container, e.g. a brown glass bottle or a non-transparent polyethylene container, after 7 months less than 1% activity is lost due to decomposition.

Even at elevated temperatures Halamid® solutions show a good stability. In figure 2 the stability of a 0.5% solution at 40, 60 and 80°C is given. The solutions were stored in non-transparent polyethylene containers. After 4 weeks at 40°C only 2% activity is lost.

Figure 3 shows stability results of 15 mg/1 Halamid® solutions. Here again the influence of direct light can be seen. Curve C shows the influence of water type. If Halamid® is dissolved in river water, containing micro-organisms and organic matter, after 24 hours about half of the Halamid® is still active. After 1 week 90% of the activity is gone due to reaction with micro-organisms, organic matter and decomposition influenced by the direct sunlight.

The excellent stability of Halamid® solutions guarantees long lasting disinfecting activity and makes it possible to prepare stock solutions.

All material, unless otherwise specified, is copyrighted by Syndel Laboratories Ltd., 1999-2008.

Website updated - May 20, 2008

Some elements of this website require Java to be enabled