Name | Aluminum hydroxide |
Synonyms | alugel alumigel alcoac333 alcoac330 alcoac30bf C.I. 77002 aluminicacid aluminahydrated Aluminiumhydrate Aluminium hydrate Aluminum hydroxide Alumina trihydrate Aluminium Hydroxide aluminum trihydrate Aluminum hydroxide, dried [JAN] |
CAS | 21645-51-2 |
EINECS | 244-492-7 |
InChI | InChI=1/Al.3H2O/h;3*1H2/q+3;; |
Molecular Formula | AlH3O3 |
Molar Mass | 78 |
Density | 2.42 g/cm3 at 20 °C |
Melting Point | 300℃ |
Boling Point | 2980℃[at 101 325 Pa] |
Water Solubility | insoluble |
Solubility | Soluble in mineral acid and alkaline aqueous solution, insoluble in water. |
Appearance | White powder |
Specific Gravity | 2.42 |
Color | White |
Odor | Odorless |
Exposure Limit | ACGIH: TWA 1 mg/m3 |
Solubility Product Constant(Ksp) | pKsp: 32.89 |
Merck | 14,342 |
PH | 8-9 (100g/l, H2O, 20℃)(slurry) |
Storage Condition | Store at +5°C to +30°C. |
Stability | Stable. Incompatible with strong bases. |
Sensitive | Easily absorbing moisture |
MDL | MFCD00003420 |
Physical and Chemical Properties | properties white crystalline powder. melting point 300 °c (loss of water) relative density 2.42 solubility insoluble in water and alcohol, soluble in inorganic acid and sodium hydroxide solution. |
Use | Used for waterproof fabric, ink, glassware, paper filler, mordant, water purification agent, also used in aluminum salt, Lubricant Manufacturing |
Hazard Symbols | Xi - Irritant |
Risk Codes | 36 - Irritating to the eyes |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
WGK Germany | - |
RTECS | BD0940000 |
TSCA | Yes |
HS Code | 28183000 |
Toxicity | TDLo oral in child: 79gm/kg/2Y-I |
Reference Show more | 1. Wu Jingwen, Shi Jiaxi, Li Cantao, et al. Preliminary Comparison of Pharmacological Effects of Different Brands of Aquilaria sinensis Samples [J]. 2018 of Traditional Chinese Medicine 41(012):2911-2915. 2. Xu Feng, Li Daigan, Zhang Meiheng, et al. Based on Autophagy Pathway to Explore the Effect Mechanism of Danggui Yinzi in Alleviating Allergic Reaction in CU Model Mice [J]. Chinese Journal of Experimental Prespectology, 2020, v.26(12):63-70. 3. Yuan Xiaofang, Wang Songping. Intervention effect and mechanism of emodin on airway remodeling in asthmatic mice [J]. Guangxi Medicine, 2019(11):1410-1414. 4. Feng Xiying, Zhao Liping, Guan Wei. Experimental Study on Effect of Simvastatin on Serum IL-4 and IFN-γ Levels in Asthma Model Rats [J]. International Respiratory Journal, 2012(20):1541-1544. 5. Liao Dong, Fu Mingliang, Gao Xiaodan, Lei Zheng, Zeng Ying, Dou Yanling, Luo Liqin. Mechanism of Notch signaling pathway on immune imbalance of Treg/Th17 cells in allergic rhinitis mice [J]. Journal of Guizhou Medical University, 2020,45(10):1176-1181 1186. 6. Xia Caihong, Yang Junyan, Sheng Guorong. Effect of Yinlian Qufeng Decoction on Immune Indexes of Chronic Urticaria Model Mice [J]. China Pharmaceutical, 2021,30(05):29-33. 7. Wang Liyun, Shi Liqing, Wang Ying, Ma Jianling, Li Qiaoli, Luo Jingyue, Wen Shaohui, Ji Kun. Establishment and Evaluation of Animal Model of Chronic Cough Combined with Cold Yin Fu Lung Disease Syndrome [J]. Modern Chinese Medicine Clinic, 2021,28(01):44-50. 8. Tao Wenjing, Li Xiaoxia, Yang Junyan. Therapeutic Effect of Yinlian Qufeng Decoction on Animal Model of Chronic Urticaria [J]. Pharmacy and clinical research, 2020,28(06):417-420. 9. Nguyen, Tung Ngoc, et al. "Halogen-free flame-retardant flexible polyurethane for textile coating: Preparation and characterisation." Fire and Materials 44.2 (2020): 269-282.https://doi.org/10.1002/fam.2799 |
White amorphous powder, tasteless. Practically insoluble in water and ethanol. When heated to 300 °c, water was lost to oxide. The relative density was 2. 42. Melting point 300 °c (loss of water). Insoluble in water and alcohol, soluble in hydrochloric acid, H2 S04 and other inorganic acids and sodium hydroxide solution. Aluminum hydroxide gel is a white viscous suspension colloid, static can precipitate a small amount of water.
aluminum sulfate was dissolved in water and filtered. Injection of hydrogen and sodium chloride in hot water solution, slow filtration. Another ammonium carbonate was dissolved in water, carbon dioxide was introduced to saturation, and filtered. This solution was added to the above solution. Aluminum hydroxide was then precipitated.
This product is a mixture of aluminum hydroxide as the main component, can contain a certain amount of carbonate, containing aluminum hydroxide [Al(OH)3] not less than 76.5%.
Analytical reagents. It is used to determine the potassium content of potassium fertilizer, ink, glassware, adsorbent, paper filler, mordant, water purifying agent, aluminum salt, lubricant manufacturing, etc.
take about 0.5g of this product, Add 10ml of dilute hydrochloric acid, heat and dissolve, show the identification reaction of aluminum salt (General rule 0301).
rats were injected intraperitoneally with LDsa:150mg.kg-1. The allowable concentration of aluminum hydroxide was 6mg.m-3. In the workplace with high dust content, wear gas masks, protective glasses and dust-proof work clothes to protect the skin and eyes.
take this product about 0.12g, precision weighing, set 250ml plug Erlenmeyer flask, precision plus hydrochloric acid titration solution (O.lmol/L) 50ml, packed, continuously shake at 37 ℃ for 1 hour, let it cool, add 6~8 drops of bromophenol blue indicator solution, and use sodium hydroxide titration solution (O.lmol/L) titration. The consumption of hydrochloric acid titrant (0.1 mol/L) per lg should not be less than 250ml.
take 0.20g of this product, Add 10ml of fresh boiling cold water, mix well, filter, add 2 drops of phenolphthalein indicator solution to the filtrate; If pink, add hydrochloric acid titration solution (0.1 mol/L)0.10, pink should disappear.
take 0.10g of this product, add 6mL of dilute nitric acid, boil and dissolve, let it cool, dilute it to 20ml with water, and filter it. Take 5ml of filtrate and check it according to law (General rule 0801), with standard sodium chloride solution 5.0ml of the control solution should not be more concentrated (0.2%).
take 0.10g of this product, add 3ml of dilute hydrochloric acid, boil and dissolve, let it cool, dilute it to 50ml with water, filter it, take 25ml of filtrate, and check it according to law (General rule 0802), with standard potassium sulfate solution 5.0ml of the control solution should not be more concentrated (1.0%).
take two 0.50g portions of this product, add 4ml nitric acid in one portion, boil and dissolve it, let it cool, transfer it to 50ml measuring flask quantitatively, dilute it to the scale with water, shake it well, filter it, take the continued filtrate as the test solution; The other part of the Precision Plus standard cadmium solution (precise quantity of cadmium single element standard solution appropriate amount, quantitative dilution with water to make cadmium l per 1 ml. Oug solution) 1 ml, the same method of operation, take the filtrate as a control solution. According to Atomic Absorption Spectrophotometry (General rule 0406 second method), at the wavelength of 228.8nm were measured, should comply with the provisions (0.0002%).
take this product l. Add 4ml of hydrochloric acid to one portion, then add 25ml of water and 0.5ml of 5% potassium permanganate solution, 5% hydroxylamine hydrochloride solution was added dropwise until the purple color disappeared. The solution was diluted with water to scale, mixed well, filtered, and the continued filtrate was taken as the test solution; another medium-Precision Plus standard mercury solution (a proper amount of mercury single element standard solution is accurately measured and diluted quantitatively with water to make a solution containing 2.0ug of mercury per lml), which is operated in the same method, the filtrate was taken as a control solution. According to Atomic Absorption Spectrophotometry (General rule 0406 second method), at the wavelength of 253.6nm were measured, should comply with the provisions (0.0002%).
take this product l. Add 5ml hydrochloric acid, water bath evaporation to dryness, then add water 5ml, stir, continue to evaporate to nearly dry, stirred to dry powder, add acetate buffer (pH 3.5)2ml of water and 10ml of water shall be dissolved at a slight temperature, filtered, and the filtrate shall be added with an appropriate amount of water to make 25ml, which shall be checked according to law (General rule 0821 Law 1), and the content of heavy metals shall not exceed 30 parts per million.
take 0.20g of this product, add 0822 of dilute sulfuric acid, boil, cool, add 5ml of hydrochloric acid and an appropriate amount of water to make, and check according to law (General Principles first law), the provisions (0.001%) shall be met.
take about 0.6g of this product, weigh it accurately, Add 10ml of hydrochloric acid and 10ml of water, boil and dissolve it, let it cool, transfer it quantitatively to a 250ml measuring flask, dilute it with water to the scale, shake well; Take 25ml with precision, neutralize with ammonia test solution to precipitate precipitate, add dilute hydrochloric acid Dropwise until the precipitate is dissolved, and add 10ml of acetic acid-ammonium acetate buffer (pH 6.0), then add 25ml of ethylenediamine tetraacetic acid disodium titration solution (0.05mol/L), boil for 3-5 minutes, let it cool, add 1 ml of Xylenol Orange indicator solution, and use zinc titration solution (0.05mol/L). The titration occurred until the solution turned from yellow to red and the results of the titration were corrected for a blank test. Each 1 ml of ethylene diamine tetraacetic acid disodium titration solution (0.05mol/L) is equivalent to 3.900mg of Al( OH )3.
antacids.
sealed storage.
each tablet of this product contains aluminum hydroxide [Al(OH)3] not less than 0.207g.
This product is white tablet.
Take 20 tablets of this product, precision weighing, fine grinding, precision weighing an appropriate amount (about 0.6g equivalent to aluminum hydroxide), add hydrochloric acid and water each 10ml, boil and dissolve, cool, the filtrate was placed in a 250ml measuring flask, and the filter was washed with water. The washing solution was mixed with a human measuring flask, diluted with water to a scale, and shaken. According to the method under the item of aluminum hydroxide content determination, the same method was used for the determination from "take 25ml with precision, add ammonia test solution and just precipitate precipitate. Each 1 ml of ethylene diamine tetraacetic acid disodium titration solution (0.05mol/L) is equivalent to 3.900mg of Al(OH)3.
Same as aluminum hydroxide.
0.3g
sealed and stored in a dry place.
This product is colloidal small particles of aluminum hydroxide dispersed in water to form a suspension gel. The aluminum hydroxide-containing [Al(OH)3] should be 5.50% to 6.75%(g/g). This product can be added to the amount of flavor and preservatives.
This product is a white viscous suspension type gel liquid; Static, can precipitate a large amount of water; Red or blue litmus test paper are slightly reactive, when the phenolphthalein indicator liquid does not show red.
take about 8g of this product, precision weighing, according to the method under the determination of aluminum hydroxide content from the "hydrochloric acid and water 10ml, boiling dissolved after", the same method for determination. Each 1 ml of ethylene diamine tetraacetic acid disodium titration solution (0.05mol/L) is equivalent to 3.900mg of Al(OH)3.
Same as aluminum hydroxide.
seal, anti-freeze storage.
each piece of this product contains aluminum oxide [Al(OH)3] not less than 0.177g; Magnesium silicate containing magnesium oxide (MgO) calculation, not less than 0.020g.
aluminum hydroxide 245g
Magnesium disilicate 105g
Belladonna liquid extract 2.6ml
Made into 1000 tablets
This product is white tablet.
antacids.
sealed and stored in a dry place.