Wood preservation facilities, ammoniacal copper zinc arsenate: chapter C, table 2
Table 2. Physical and Chemical Properties of Ammoniacal Copper Zinc Arsenate (ACZA) Solution
Identification
| Common synonyms | Chemonite, ACZA (Ammoniacal copper zinc arsenate) |
| Registrant in 2012 | Lonza - Arch Wood Protection Canada Corp. (Mississauga, ON):
|
Transportation and storage information
| Shipping state | Liquid concentrate |
| Concentration (by weight, as oxides) | Concentrates, 22% including
|
| Storage temperature | Ambient |
| Hoses | Use PVC, rubber, polyethylene steel or stainless steel fittings only. |
| Venting | No requirement |
| Containers/materials | Plastic, steel or steel polylined |
| Classification | Poisonous, corrosive liquid |
| Placards | Class 6.1 P.G II (Check with Transport Canada) |
| Delivery format | Bulk tank for concentrate |
Physical and chemical properties
| Physical state | Liquid (20°C, 1 atm) |
| Vapour pressure (27ºC) | 8% solution, 72 mm Hg |
| Solubility | Freely soluble (water) |
| Concentration of work solutions | Work solutions 0.5% to 10% |
| Floatability | Mixes with water |
| Freezing point | -3°C to -5°C |
| Flash point | Not applicable |
| Explosive limits | Mixtures of ammonia in air (16-25% by volume) in an enclosed space can ignite or explode if sparked or exposed to temperatures exceeding 650°C (1200°F) (see ammonia) |
| Colour | Light blue |
| Odour | Sharp, characteristic odour (50 ppm threshold) |
| pH | 2% solution, 10.2; 8% solution, 12.0 |
| Typical preservative retention in treated wood | 4.0 to 30 kg/m3 treated wood |
Hazard data
Fire
| Extinguishing data | Liquid is non-flammable. Most extinguishing agents can be used on fires involving ammonium hydroxide and arsenic acid. |
| Fire behaviour | Liquid not flammable. Mixtures of ammonia and air can ignite or explode (see above). When exposed to fire, the liquid solution releases ammonia gas as well as copper, zinc and arsenic fumes. |
| Ignition temperature | Not flammable as liquid; ammonia is flammable at 649°C. |
| Burning rate | Not applicable |
Reactivity
| With water | No reaction, soluble. |
| With common materials | Copper, tin and zinc alloys are readily corroded. Reacts with acrolein, acrylic acid, chlorosulphonic acid, dimethyl sulphate, halogens, hydrochloric acid, hydrofluoric acid, nitric acid, sulphuric acid, oleum, propylene oxide and silver nitrate. Avoid contact with aluminium or zinc. Strong reducing conditions may produce arsine gas. |
| Stability | Stable |
Table 2.1. Physical and Chemical Properties of Ammonium Hydroxide (5)
Identification
| Common synonyms | Aqua ammonia, NH4OH Anhydrous Ammonia Ammonium hydrate Ammonium solution Ammonia water |
| United Nations (UN) number | 2672 |
| Manufacturers | CF Industries Inc., Courtright, Ontario Canadian Fertilizers Ltd., Medicine Hat, Alberta Simplot Chemical Ltd., Brandon, Manitoba |
Transportation and storage information
| Shipping state | Liquid |
| Concentration (by weight, as oxides) | Grade A: 29.4% USP: 27-29% B: 25% CP: 28% C: 15% |
| Classification | Poisonous, corrosive |
| Storage temperature | Ambient |
| Hoses | Use PVC, rubber, polyethylene steel or stainless steel fittings only. |
| Venting | Provide scrubbing to meet air discharge regulatory limits. |
| Containers/materials | Totes, tank trucks, tank cars (steel or steel polylined). Use all iron or stainless steel pumps (no copper alloys, brass or bronze). 29% aqua ammonia liquid (bulk) |
| Placards | Check with Transport Canada |
Physical and chemical properties
| Physical state | Liquid (20°C, 1 atm.) |
| Vapour pressure | Ammonia - 10% Ammonia - 20% |
| Solubility | Freely soluble (water) |
| Floatability | Floats and mixes with water |
| Flash point | Flammable as ammonia |
| Explosive limits | Mixtures of ammonia in air (16-25% by volume) in an enclosed space can ignite or explode if sparked or exposed to temperatures exceeding 650°C (1200°F). |
| Colour | Colourless |
| Odour | Sharp, characteristic odour (50 ppm threshold) |
| Vapour density | 0.6 |
| Specific gravity | 0.90 (15.5°C) |
Hazard data
Fire
| Extinguishing data | Liquid is non-flammable. Most extinguishing agents can be used on fires involving ammonium hydroxide and arsenic acid. |
| Fire behaviour | Liquid not flammable. Mixtures of ammonia and air can ignite or explode (see above). When exposed to fire, the liquid solution releases ammonia gas. |
| Ignition temperature | Not flammable as liquid; ammonia is flammable at 649°C. |
| Burning rate | Not applicable |
Reactivity
| With water | No reaction, soluble |
| With common materials | Copper, tin and zinc alloys are readily corroded. Reacts with acrolein, acrylic acid, chlorosulphonic acid, dimethyl sulphate, halogens, hydrochloric acid, hydrofluoric acid, nitric acid, sulphuric acid, oleum, propylene oxide and silver nitrate. Avoid contact with aluminium or zinc. |
| Stability | Stable |