Name | Nitrilotriacetic acid |
Synonyms | NTA Noname chel300 chel 300 Trilone A ai3-52483 titriplexi triglycine complexoni komplexoni nci-c02766 Complexon I titriplex i versene nta acid hampshirentaacid hampshire nta acid aminotriacetic acid triglycollamic acid nitrilotri-aceticaci Nitrilortiaceticacid Nitrilotriacetic acid Nitrilo triacetic acid tri(carboxymethyl)amine kyselinanitrilotrioctova Glycine,N,N-bis(carboxyme N,N-bis(carboxymethyl)glycine nitrilo-2,2',2''-triaceticacid kyselinanitrilotrioctova(czech) nitrilo-2,2',2''-triacetic acid nitrilotris(methylenecarboxylicacid) Trimethylamine-α,α',α''-tricarboxylic acid alpha,alpha',alpha''-trimethylaminetricarboxylic acid |
CAS | 139-13-9 |
EINECS | 205-355-7 |
InChI | InChI=1/C6H9NO6/c8-4(9)1-7(2-5(10)11)3-6(12)13/h1-3H2,(H,8,9)(H,10,11)(H,12,13) |
Molecular Formula | C6H9NO6 |
Molar Mass | 191.14 |
Density | 1.5784 (rough estimate) |
Melting Point | 245°C (dec.)(lit.) |
Boling Point | 326.86°C (rough estimate) |
Flash Point | 100°C |
Water Solubility | Insoluble. |
Solubility | 0.1 M NaOH: 0.1M at20°C, clear, colorless |
Vapor Presure | 0-0Pa at 20-25℃ |
Appearance | White crystal |
Color | White |
Maximum wavelength(λmax) | ['λ: 260 nm Amax: 1.5', , 'λ: 280 nm Amax: 0.05'] |
Merck | 14,6579 |
BRN | 1710776 |
pKa | 3.03, 3.07, 10.70(at 20℃) |
Storage Condition | 2-8°C |
Sensitive | Easily absorbing moisture |
Refractive Index | 1.4860 (estimate) |
MDL | MFCD00004287 |
Physical and Chemical Properties | Character white crystalline powder. soluble in aqueous ammonia and alkali solution, slightly soluble in hot water, insoluble in water and most organic solvents. Other properties decompose when heated to ≥ 246 ℃ to produce toxic smoke containing carbon monoxide, carbon dioxide and nitrogen oxides soluble in ammonia and alkaline solution, slightly soluble in hot water, insoluble in organic solvents. It cannot coexist with strong oxidants, aluminum, copper, copper alloys and nickel. |
Use | It is a good fixing agent in the dye industry, plays a role in the production of styrene, plays a role in the production of polyurethane foam, such as Catalyst and complexing agent |
Risk Codes | R22 - Harmful if swallowed R36 - Irritating to the eyes R40 - Limited evidence of a carcinogenic effect R36/37/38 - Irritating to eyes, respiratory system and skin. R45 - May cause cancer R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37 - Wear suitable protective clothing and gloves. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S53 - Avoid exposure - obtain special instructions before use. |
UN IDs | 2811 |
WGK Germany | 2 |
RTECS | AJ0175000 |
FLUKA BRAND F CODES | 21 |
TSCA | Yes |
HS Code | 29224995 |
Hazard Class | 8 |
Packing Group | II |
Toxicity | LD50 orally in Rabbit: 1100 mg/kg |
Raw Materials | Sulfuric acid Ammonium chloride Chloroacetic acid |
White rhomboid crystals. Soluble in ammonia, sodium hydroxide solution. Slightly soluble in water, 1L of water can dissolve 22.5g of amino triacetic acid at 2.3 ℃, and the pH value of saturated aqueous solution is. Insoluble in most organic solutions. Flammable, in case of fire, high heat, oxidant has caused the risk of combustion.
sodium chloroacetate is formed by the reaction of chloroacetic acid with sodium hydroxide, and then reacts with ammonium chloride to form sodium aminotriacetate, which is then acidified to obtain a finished product.
nitrilotriacetic acid is an organic polycarboxylic acid chelating agent, because of its small molecule, it can chelate more metals and has strong biodegradability. Adding a certain amount of reducing agent and pH Adjusting Agent to hypoaminotriacetic acid, the effect of removing Fe2 03 and red iron oxide is excellent.
rat oral LD50:1.47g/kg. Inhalation, ingestion of harmful to the body, can cause irritation. No occupational poisoning was reported. Store in a cool, ventilated warehouse. Keep away from fire and heat source. Protection from direct sunlight. Keep the container sealed. Should be stored separately from the oxidant, acid, alkali. Aminotriacetic acid is non-toxic. Pay attention to moisture and fire prevention during storage and transportation.