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Date of Issue : Jul 1999 1. IDENTIFICATION
General Product Name : AMMONIUM HYDROGEN FLUORIDE Other Names : AMMONIUM BIFLUORIDE ; AMMONIUM ACID FLUORIDE UN No. : 1727 Dangerous Goods Class : 8 Subsidiary Risk : None Allocated Hazchem Code : 2X Pack Group : II EPG : 37 Poisons Schedule : 6 Uses : Ceramics, chemical reagent, etching glass (white acid), steriliser for brewery, dairy and other equipment; electroplating processing beryllium, laundry sour.
1.1 Physical Description / Properties
Appearance : White translucent deliquescent crystals with an odourless or slightly acrid smell. Formula : NH4HF2 Boiling Point : 239.5 deg C Melting Point : 126.2 deg C Vapour Pressure : N/A Specific Gravity : 1.503 (water = 1) Flash Point : N/A pH : N/A () Solubility in water : 700 g/l (25 deg C) Flammability Limits (as percentage volume in air) Lower Explosion Limit : N/A Upper Explosion Limit : N/A 1.2 Other Properties
No data available 1.3 Ingredients
2. HEALTH HAZARD INFORMATION
2.1 Health Effects - Acute Swallowed
Toxic if swallowed. Causes irritation and burns. Eye
Causes eye irritation and burns which may not be immediately evident. Dust is corrosive to eyes. Skin
Causes skin irritation and burns which may not be immediately evident. Dust is corrosive to the skin. Inhaled
Corrosive to respiratory tract including mucous membranes, throat and lungs. 2.2 Health Effects - Chronic
Causes severe eye, skin and mucous membrane irritations which may not be immediately evident. Can cause fluoride poisoning.
2.3 First Aid
Swallowed
Medical treatment is required as soon as possible. If swallowed give 1-3 cups of water to drink. DO NOT INDUCE VOMITING.
Eye
Contamination of the eyes must be treated by thorough irrigation with water, with the eyelids held open. A Doctor (or eye specialist) should be consulted immediately.
Skin
After contact with skin, wash immediately with plenty of water. Apply calcium gluconate gel to the affected area(s), rub in until locally free of pain and then continue for a further 15 minutes. If possible apply a dressing soaked in 20% calcium gluconate solution. If burns cover more than area of the hand (approx 150 cm2) 6 effervescent calcium pills (400mg calcium per pill) must be dissolved in water and taken orally. his dose should be repeated every 2 hours until the patient is in hospital. If burns cover large areas patient should be completely bathed in at least 1% calcium gluconate solution.
Inhaled
Remove victim to an uncontaminated area immediately. Avoid becoming casualty. Seek medical advice at once. After inhalation, take calcium tablets as for skin contact. Medical treatment is required as soon as possible.
First Aid Facilities
Ensure an eye bath and safety shower are available and ready for use.
2.5 Advice to Doctor
Material can cause fluoride poisoning.
2.6 Toxicity Data
Oral LD50 = not available Dermal LD50 = not available Inhalation LC50 = not available
3. PRECAUTIONS FOR USE
3.1 Exposure Standards
Worksafe recommends the following exposure standard : Fluorides (as F) : TWA 2.5 mg/m3
3.2 Engineering Controls
Ensure adequate ventilation to maintian exposure levels below standards.
3.3 Personal Protection
Respiratory - wear an approved dust mask or respirator. Avoid dust inhalation. Eyes - wear chemical goggles. Skin - wear rubber or neoprene gloves and body protection as necessary to minimise skin contact.
3.4 Flammability
Material is non-flammable SAFE HANDLING INFORMATION
4.1 Storage / Transport
Keep away from food and feed products. Keep storage containers closed. Store in a cool dry area away from direct heat.
4.2 Packaging / Labelling UN No. 1727 Class 8 Sub Risk None Allocated Hazchem Code 2X Pack Group II EPG No. 37 Shipping Name AMMONIUM HYDROGEN FLUORIDE Hazard TOXIC CORROSIVE
Risk Phrases R25 Toxic if swallowed. R34 Causes burns.
Safety Phrases S1/2 Keep locked up and out of the reach of children. S22 Do not breathe dust. S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37 Wear suitable gloves. S45 In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible).
4.3 Spills and Disposal
Spills
Personnel should wear full protective clothing and breathing apparatus. Avoid contact with skin, eyes or mucous membranes.
Small spills - collect spilled material carefully. Neutralise with alkaline material and hold for waste disposal. Large spills - contain and/or collect spilled material carefully. Neutralise with alkaline material and hold for waste disposal.
Disposal
Dispose of in accordance with all Local, State and Federal regulations at an approved waste disposal facility.
4.4 FIRE AND EXPLOSION HAZARD Fire / Explosion
Not a fire or explosion hazard, but may release toxic emissions if involved in a fire. Personnel should wear approved self-contained breathing apparatus. Thermal decomposition begins at 230 deg C. Hazardous decomposition products include Hydrogen Fluoride and Ammonia. Evolves hydrogen on contact with non- noble metals (eg. iron, zinc, aluminium). Reacts violently with alkalis. With concentrated acids formation of hydrogen fluoride. With concentrated alkalis formation of ammonia.
Extinguishing Media
Fire-fighters should wear full protective clothing including self-contained breathing apparatus. Use equipment/media appropriate to surrounding fire conditions. 5 OTHER INFORMATION
Other Information
Acute fish toxicity : Zebra barbel (Brachydenio rerio) LCo : 316 mg/l/96hrs (flaks B) Zebra barbel (Brachydenio rerio) LC0 : 237 mg/l/96hrs (flaks F) Acute bacterial toxicity : activated sludge micro-organism EC50 : 2394 mg/l (flaks B) activated sludge micro-organism EC50 : 4184 mg/l (flaks B) Toxic effect on fish, plankton and on sedentary organisms, also through shifting of pH value. Do not allow to escape into waters, wastewater or soil. Water pollution class (WGK) : 1 - slightly hazardous to water
5.1 Contact Points
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The information above is believed to be accurate and represents the best information currently available to us. However, we make no warranty of merchantability or any other warranty, express or implied, with respect to such information, and we assume no liability resulting from its use.
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