There can be many problems attached to oak staining especially with green oak. Unstightly stains and marks can spoil good looking beams or floors. Dark Spots and discoloration of the wood can be removed with Oxalic Acid. Oxalic Acid can also be used to freshen wood colour if it has become grayed due to external exposure.
In the refinishing of wood furniture, oxalic acid can be used after stripping to lighten and soft darker stained areas before refinishing. It can also be used as a rust remover and a stain remover in many other applications. In removing iron stains users can scrub the stained area with a solution of oxalic acid in water.
Oxalic Acid is used
- by those working with wood, timber & wooden beams
- in removing tannin stains
- in removing rust in automotive shops and in restoring antiques
- in rust stain removal
- Those pre-treating stainless steel
- in preparing & polishing stones & marble
- in restoring furniture as Oxalic Acid bleach
- by Fishermen lin maintaining wood on boats & quays
- by Beekeepers - a 6% solution of oxalic acid in sugar can protect against the parasitic Varroa mite
- as a purifying intermediate in pharmacy
- as a precipitator in rare earths processing
Features
- Concentrate crystals removes tannins and water stains from timber
- Ideal for oak frames and beams
- Can be put to many uses due to the flexibility of using crystals
| PRODUCT NAME | : | OXALICACID |
| CAS number | : | 144-62-7 |
| UN number | : | |
| Formula | : | HOOCCOOH.2H2O |
| Odour | : | |
| Solubility in water | : | APPRECIABLE |
| Density | : | 1.901 at 25 oC |
| Boiling point | : | oC |
| Melting point | : | 102 oC |
| Viscosity | : | |
| Flashpoint | : | 235 oC |
| Explosive limits | : | |
| Vapour pressure | : | |
| Skin absorption/irritation | : | YES |
| TLV Country NL Year 1995 | : | ppm 1mg/m3 |
| Pollution category 1994 | : | - |
Using Application :
Oxalic Acid is used extensively for boat cleaning, it can be used on timber, GRP and steel craft for the removal of rust and waterline stains and also to clean timber decks. For vertical applications oxalic can be mixed with wallpaper paste to make a thick solution, this mix will cling to any vertical surface and can be washed off with water.
REMOVAL OF IRON STAINS
Iron stains can be removed by scrubbing the stained area with an aqueous solution of oxalic acid in water. Dissolve 1kg oxalic acid to 6Lt of warm water. Scrub stained area using a stiff-bristle brush. Thoroughly rinse with water after treatment. When completely dry, lightly sand the surface. Surface must be clean and
completely dry (not just surface dry) before refinishing. Incomplete drying and retained subsurface moisture can cause finish adhesion failure.
Many of Construction Chemicals customers are involved with building renovation and in particular Oak frames, oak windows and beams as well as flooring. Our product range ensures that whenever timber is being used we have the products to bond, fill, preserve, sand, stain and paint. Our Customers will be aware of the problems of oak stains especially with green oak. This can look unsightly and spoil good looking beams or floors. OXALIC ACID CLEANS MOST STAINS FROM TIMBER.
REMOVAL OF BLACK WATER AND TANNIN STAIN
A common form of staining on wood surfaces results from contamination with iron. A portion of the extractives in wood includes a group of chemicals collectively called tannins. The amount of tannins depends on species; oak, redwood, and cedar are rich in tannins. Tannins react with iron to form a blue-black stain on wood. Common causes of iron stain include use of un-galvanized or poorly galvanized fasteners; OXALIC ACID brushed into the stains makes removal easy. Finishing wood with a WATER REPELLANT WITHA PRESERVATIVE AND/OR WOOD POLISH OR OIL greatly minimizes further iron stain and enhances the finish of the wood.. Wood must be clean; free of paint, waxes, oils and dirt. Use wood cleaners to remove any grease oils or grime. Use paint strippers to remove any finish, paint or coating.
First Aid
IF SWALLOWED – Give 1 or 2 glasses of water and call for medical assistance immediately.
EYE CONTACT - Wash with plenty of water for at least 15 minutes; Get medical attention promptly.
| Product Name | RXSOL-19-1410-020 |
| Product Type | Oxalic Acid Liquid |
Company Details:
RX MARINE INTERNATIONAL
105, A wing , BSEL , TECH PARK.
VASHI ,NEW BOMBAY 400703 INDIA
| Phone | +91 22 65113333 / 5555 / 9999 / 27611360 |
| Fax | +91 22 2781 1318 :::AOH :0091 9821214367 |
| mail@rxmarine.com |
|
Chemica Name |
CAS Number |
Proportion |
R Phrases* |
| Oxalic Acid | 144-62-7 | 45-60% |
R21/22 R41 |
Non Hazardous Ingrident - 40-50%
*See Section 16
Not classified as Dangerous Goods by the criteria of the Australian Dangerous Goods Code (ADG Code) for transport by Road and Rail; NON-DANGEROUS GOODS.
| Risk Phrases | Harmful in contact with skin and if swallowed. Risk of serious damage to eyes. |
| Safety Phrases | Avoid contact with skin and eyes. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Wear suitable protective clothing, gloves and eye/face protection. |
|
Inhalation |
Remove victim from area of exposure - avoid becoming a casualty. Remove contaminated clothing and loosen remaining.clothing. Allow patient to assume most comfortable position and keep warm. Keep at rest until fully recovered. Seek medical advice if effects persist. |
|
Skin Contact |
If skin or hair contact occurs, immediately remove any contaminated clothing and wash skin and hair thoroughly with running water. If swelling, redness, blistering or irritation occurs seek medical assistance. |
|
Eye Contact |
Immediately wash in and around the eye area with large amounts of water for at least 15 minutes. Eyelids to be held apart. Remove clothing if contaminated and wash skin. Urgently seek medical assistance. Transport to hospital or medical centre. |
| Ingestion |
Rinse mouth with water. If swallowed, do NOT induce vomiting. Give a glass of water. Seek immediate medical assistance. |
Medical attention and special treatment:Treat symptomatically. Can cause corneal burns.
Non-combustible material.
Precautions for fire fighters and special protective equipment: Decomposes on heating emitting toxic fumes. Fire fighters to wear self-contained breathing apparatus and suitable. protective clothing if risk of exposure to products of decomposition. Keep containers cool with water spray.
Suitable Extinguishing Media: Not combustible, however, if material is involved in a fire use: Fine water spray, normal foam, dry agent (carbon dioxide, dry chemical powder).
Emergency procedures: Clear area of all unprotected personnel. If contamination of sewers or waterways has occurred advise local emergency services.
Methods and materials for containment and clean up: Avoid accidents, clean up immediately. Wear protective equipment to prevent skin and eye contact and breathing in dust. Sweep up, but avoid generating dust. Collect and seal in properly labelled containers or drums for disposal.
This material is a Scheduled Poison S6 and must be stored, maintained and used in accordance with the relevant
regulations.
|
Handling |
Avoid skin and eye contact and breathing in dust. Avoid handling which leads to dust formation. |
|
Storage |
Store in a cool, dry, well ventilated place and out of direct sunlight. Store away from foodstuffs. Store away from incompatible materials described in Section 10. Keep containers closed when not in use - check regularly for spills. |
|
Oxalic acid |
8hr TWA = 1 mg/m3, 15 min STEL = 2 mg/m3 |
|
Product Name |
OXALIC ACID LIQUID. |
|
Substance No |
000030127001 Version: 2 |
| TWA | The time-weighted average airborne concentration over an eight-hour working day, for a five-day working week over an entire working life. |
| STEL (Short Term Exposure Limit) | The average airborne concentration over a 15 minute period which should not be exceeded at any time during a normal eight hour work day. According to current knowledge this concentration should neither impair the health of, nor cause undue discomfort to, nearly all workers. These Exposure Standards are guides to be used in the control of occupational health hazards. All atmospheric contamination should be kept to as low a level as is workable. These exposure standards should not be used as fine dividing lines between safe and dangerous concentrations of chemicals. They are not a measure of relative toxicity. |
| Engineering controls | Use with local exhaust ventilation or while wearing dust mask. Keep containers closed when not in use. Ensure ventilation is adequate and that air concentrations of components are controlled below quoted Exposure Standards. |
| Personal Protective Equipment | The selection of PPE is dependant on a detailed risk assessment. The risk assessment should consider the work situation, the physical form of the chemical, the handling methods, and environmental factors. Orica Personal Protection Guide No. 1, 1998: F - OVERALLS, SAFETY SHOES, CHEMICAL GOGGLES, GLOVES, DUST MASK. Wear overalls, chemical goggles and impervious gloves. Avoid generating and inhaling dusts. If dust exists, wear dust mask/respirator meeting the requirements of AS/NZS 1715 and AS/NZS 1716. Always wash hands before smoking, eating, drinking or using the toilet. Wash contaminated clothing and other protective equipment before storage or re-use. |
| Physical state | Liquid |
|
Colour |
Clear |
|
Odour |
Odourless |
|
Solubility |
Soluble in water , glycerol and alcohol. Partially soluble in ether. Insoluble in chloroform, petroleum ether and benzene |
|
|
|
|
Vapour Density (air=1) |
Not available |
| Vapour Pressure (20 °C) | 0.14 Pa |
| Flash Point (°C) | Not applicable |
| Flammability Limits (%) | Not applicable |
| Autoignition Temperature (°C) | Not applicable |
| Melting Point/Range (°C) | 101.5 (dihydrate) |
| Boiling Point/Range (°C) | 149 - 160 (dihydrate) |
| Decomposition Point (°C) | Not available |
| pH | 1.3 |
| Chemical stability | Stable under normal ambient and anticipated storage and handling conditions of temperature and pressure. Vigorous reaction may occur with alkalies yielding heat and pressure, and with acid chlorides producing toxic fumes. May react violently with alkali metals producing flammable hydrogen gas. Reacts strongly with oxidising agents, especially sodium chlorite and sodium hypochlorite. Can react with some silver compounds to form explosive silver oxalates. Dry oxalic acid is not corrosive to metals. Hygroscopic. |
| Conditions to avoid | Avoid alkali material in storage and in use |
| Incompatible materials | Incompatible with most metals in the presence of moisture. |
| Hazardous decomposition products | Hydrogen. Carbon monoxide. Oxygen, which will support combustion. |
| Hazardous reactions | Reacts exothermically with alkalis . Accelerated decomposition occurs when mixed with strong oxidising agents. |
No adverse health effects expected if the product is handled in accordance with this Safety Data Sheet and the product label. Symptoms or
effects that may arise if the product is mishandled and overexposure occurs are:
|
Ingestion |
Swallowing can result in a severe burning pain of the mouth, throat and stomach followed by profuse vomiting (sometimes bloody). Small doses of oxalate in the body can cause headache, pain and twitching in muscles, and cramps. Larger doses can cause weak and irregular heartbeat, drop in blood pressure and signs of heart failure. Large doses rapidly cause a shock-like state, convulsions, coma and possibly death. |
|
Eye contact |
A severe eye irritant. Contamination of eyes can result in permanent injury. |
|
Skin contact |
Contact with skin may result in irritation. Solutions of 5% to 10% oxalic acid are irritating to the skin after prolonged exposure and can cause corrosive injury. |
|
Inhalation |
Breathing in dust may result in respiratory irritation.Inhaled oxalic acid is readily absorbed into the body and may cause headaches and nausea. |
|
Long Term Effects |
Long term exposure can result in kidney stones and stone formation in the urinary tract. |
| Toxicological Data | |
| Oral LD50 (rat) | 475 mg/kg |
| Dermal LD50 (rabbit) | 2000 mg/kg |
Exposure to this compound can result in systemic effects including kidney damage, muscle twitching , cramps and nervous system complaints.
Ecotoxicity Avoid contaminating waterways.
|
Disposal methods |
Refer to local government authority for disposal recommendations. |
Road and Rail Transport:
Not classified as Dangerous Goods by the criteria of the Australian Dangerous Goods Code (ADG Code) for transport by Road and Rail;
NON-DANGEROUS GOODS.
Marine Transport:
Not classified as Dangerous Goods by the criteria of the International Maritime Dangerous Goods Code (IMDG Code) for
transport by sea; NON-DANGEROUS GOODS.
Air Transport:
Not classified as Dangerous Goods by the criteria of the International Air Transport Association (IATA) Dangerous Goods Regulations
for transport by air; NON-DANGEROUS GOODS.
|
. |
|
|
Hazard Category |
Xn: Harmful Xi: Irritant |
| Risk Phrase(s) | |
| R21/22 | Harmful in contact with skin and if swallowed. |
| R41 | Risk of serious damage to eyes. |
| Safety Phrase(s) | |
| S24/25 | Avoid contact with skin and eyes. |
| S26 | In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| S36/37/39 | Wear suitable protective clothing, gloves and eye/face protection. |
| Poisons Schedule | S6 Poison |
This MSDS summarises to our best knowledge at the date of issue, the chemical health and safety hazards of the material and general guidance on how to safely handle the material in the workplace. Since RX MARINE INTERNATIONAL cannot anticipate or control the conditions under which the product may be used, each user must, prior to usage, assess and control the risks arising from its use of the material.RX MARINE INTERNATIONAL responsibility for the material as sold is subject to the terms and conditions of sale, a copy of which is available upon request. Product.
DISCLAIMER OF LIABILITY :The information in this SDS was obtained from sources which we believe are reliable. However, the information is provided without any warranty, express or implied, regarding its correctness. The conditions or methods of handling, storage, use or disposal of the product are beyond our control and may be beyond our knowledge. For this and other reasons, we do not assume responsibility and expressly disclaim liability for loss, damage or expense arising out of or in any way connected with the handling, storage, use or disposal of the product. This MSDS was prepared and is to be used only for this product. If the product is used as a component in another product, this MSDS information may not be applicable.