100587-94-8
lanthanum nitrate hydrate
CAS: 100587-94-8
Molecular Formula: H2LaN3O10
100587-94-8 - Names and Identifiers
| Name | lanthanum nitrate hydrate |
| Synonyms | LANTHANUM NITRATE HYDRATE lanthanum nitrate hydrate LANTHANUM NITRATE HYDRATED LANTHANUM NITRATE, N-HYDRATE LanthanuM(Ⅲ) nitrate hydrate lanthanum(iii) nitrate hydrate |
| CAS | 100587-94-8 |
| EINECS | 683-072-1 |
| InChI | InChI=1/La.HNO3.H2O/c;2-1(3)4;/h;(H,2,3,4);1H2 |
100587-94-8 - Physico-chemical Properties
| Molecular Formula | H2LaN3O10 |
| Molar Mass | 342.94 |
| Melting Point | 40°C |
| Boling Point | 126°C |
| Water Solubility | Soluble in water. |
| Appearance | Liquid |
| Color | Clear colorless |
| Physical and Chemical Properties | Lanthanum nitrate, chemical formula La(NO3)3. 6H2O. Molecular weight 433.02. White triclinic crystals. Deliquescence. Melting point 40 °c. Very soluble in water and ethanol, soluble in acetone. Decomposition by heating to 126 ° C. Results in the formation of a basic salt and then an oxide. Heat to 800 ° C. Completely decomposed into lanthanum oxide. Cu[La(NO3)5], Mg[La(NO3)5], and the like are likely to form a crystalline double salt with copper nitrate or magnesium nitrate. After co-mixing and evaporating with the solution of ammonium nitrate, that is, a large colorless crystalline hydrated double salt (NH4)2[La(NO3)5]· 4H2O is formed, the latter can lose all of the water of crystallization when heated at 100 °c. And hydrogen peroxide, that is, over lanthanum oxide (La2O5) powder generated. Preparation Method: by lanthanum oxide or lanthanum hydroxide dissolved in dilute nitric acid solution, after water bath evaporation and crystallization. Purposes: for the preparation of preservatives, gas shade, chemical reagents. |
| Use | For the production of xenon lamp gauze cover and optical glass |
100587-94-8 - Risk and Safety
| Risk Codes | R8 - Contact with combustible material may cause fire R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S17 - Keep away from combustible material. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| UN IDs | UN 1477 5.1/PG 2 |
| WGK Germany | 3 |
| RTECS | OE5075000 |
| TSCA | Yes |
| HS Code | 28469091 |
| Hazard Class | 5.1 |
100587-94-8 - Nature
Open Data Verified Data
white powder Crystal, hygroscopic, melting point of about 40 deg C, boiling point of 126 deg C. Soluble in water and alcohol, heated to above the melting point to form a basic salt.
Last Update：2024-01-02 23:10:35
100587-94-8 - Preparation Method
Open Data Verified Data
enrichment method: using rare earth chloride or rare earth ammonium sulfate double salt as raw material, after extracting part of cerium, lanthanum is relatively enriched. The rare earth ammonium sulfate double salt is dissolved with sodium hydroxide, the antimony is oxidized by air, leached with dilute nitric acid, and the cerium-rich slag is separated. The solution is lanthanum-rich mother liquor, which is extracted and separated, and then crystallized to obtain enriched lanthanum nitrate.
Last Update：2022-01-01 11:05:08
100587-94-8 - Use
Open Data Verified Data
used in the production of optical glass, xenon lamp, phosphor and preservatives. Ceramic Capacitor additives, petroleum refining catalysts.
Last Update：2022-01-01 11:05:07
100587-94-8 - Safety
Open Data Verified Data
double-layer polyethylene plastic bag sealed packaging, jacket iron drum. 50kg net weight per barrel. Should be stored in a ventilated, dry warehouse. This product is easy to absorb moisture, storage and transportation should prevent package breakage, keep dry. Class I inorganic oxidant, Hazard code number; GB 5.1 class 51523. UN NO. 1477: IMDG code 5.1, Class 2. For the remainder, see cerium oxide products.
Last Update：2022-01-01 11:05:08
100587-94-8 - Reference Information
| Overview | deliquescent, oxidative. Hazardous chemicals. Inhalation of lanthanum and its compounds may cause symptoms of Head Pain and Nausea in humans, and in severe cases may lead to death. Because lanthanum nitrate has combustion-supporting properties, it belongs to explosion products. |
| preparation method and use | prepared by dissolving lanthanum oxide or lanthanum hydroxide in dilute nitric acid solution and crystallizing after water bath evaporation. For the preparation of preservatives, phosphor, optical glass and gas lamp cover, chemical reagents. [Application of lanthanum nitrate in plants] (1) The study found that the addition of lanthanum nitrate to OM fungi increased the content of polysaccharide and protein in cells, it promotes the accumulation of substances in dendrobium officinale, which is another factor that increases the biomass of dendrobium plants. The resistance of plants is closely related to the activity of defense system. Lanthanum nitrate and OM fungi can improve the physiological activity of cells, and the cell metabolism is strong, and the effect of their combination is more significant. Aerobic respiration produces a large amount of reactive oxygen species, which accelerates oxidative stress. Active oxygen scavenging enzymes such as SOD, CAT and POD exist in plants. These enzymes act synergistically to balance the production and removal of active oxygen in order to maintain the normal physiological metabolism of plants. At the same time, POD is a multifunctional enzyme, which also has a regulatory effect on plant growth. MDA is one of the main products of cell membrane lipid peroxidation, and its content can reflect the degree of stress damage to plants. The production of a large number of reactive oxygen species accelerated the oxidative stress, promoted the cell membrane lipid peroxidation, and produced a large amount of MDA. The accumulation of MDA has a certain correlation with the activity of protective enzyme, and the increase of protective enzyme activity is beneficial to reduce the content of MDA. The appropriate amount of lanthanum nitrate and OM fungi can increase the activity of intracellular protective enzymes, reduce the content of MDA, the changes of the two showed a certain correlation, the activities of SOD, CAT and POD in the cells of the Plants inoculated with OM fungi were higher than those of the non inoculated treatment, which showed that the effect of adding appropriate amount of lanthanum nitrate to the OM fungi was better. The combination of appropriate amount of lanthanum nitrate and OM fungi can effectively prevent plant senescence, improve plant resistance and adaptability, and promote the growth of Dendrobium candidum. In conclusion, the addition of appropriate amount of lanthanum nitrate and inoculation of OM fungi can significantly improve the physiological characteristics of dendrobium officinale, the soluble protein content and protective enzyme activity, reduce the content of MDA, enhance the ability of Dendrobium candidum to adapt to the environment, improve the biomass of Dendrobium candidum and the accumulation of active components such as polysaccharides. It provides a theoretical basis for the further development of Dendrobium mycorrhizal cultivation and the development of rare earth bacterial fertilizer in the future. (2) biomass is the comprehensive embodiment of plant response to alkali stress. The results of lanthanum nitrate on the growth and photosynthetic physiology of ryegrass seedlings under alkali stress showed that [5], NaHCO3 stress significantly inhibited the growth of ryegrass seedlings, low concentration of lanthanum nitrate can alleviate the inhibitory effect of alkali stress on seedling growth, which may be related to La3 + which can transduce the stress signal into the cell and increase the level of calmodulin. There is a close relationship between accelerating cell division or changing the ratio of fatty acids in cell membrane, increasing the fluidity of membrane and improving photosynthetic function. Chloroplast is the part of photosynthesis in plants, and is also the organelle sensitive to salt in cells. The photosynthetic efficiency of plants is closely related to the content, electron transfer and phosphorylation activity of photosynthetic pigments in chloroplasts. The decrease of photosynthetic electron transfer and phosphorylation activity limits the assimilation of carbon. The results showed that low concentration of lanthanum nitrate could alleviate the decrease of chlorophyll and carotenoid content in ryegrass leaves under alkali stress, thus maintaining a higher photosynthetic rate, high concentration of lanthanum nitrate resulted in the decrease of photosynthetic pigment content and photosynthetic rate under alkali stress. Lanthanum nitrate caused changes in photosynthetic pigment content may be due to low concentrations of La3 + activation of some enzymes in chlorophyll synthesis or directly involved in the formation of rare earth chlorophyll [19], high concentration of La3 + may inhibit the activity of related enzymes in the process of chlorophyll synthesis or activate the chlorophyll enzyme to accelerate its decomposition, but the specific mechanism needs further study. Many studies have shown that the appropriate concentration of lanthanum can promote the photosynthetic electron transport and phosphorylation of plants, for example, lanthanum nitrate can improve the Hill reaction activity of wheat leaves [6]; accelerate tobacco photosynthetic electron transfer and phosphorylation reaction [7] ;LaCl3 can activate the activity of spinach chloroplast coupling factor, Increased levels of cyclic and non-cyclic photosynthetic phosphorylation. Outside of a certain concentration of lanthanum nitrate can effectively reduce the effects of alkaline stress of photosynthetic pigment content, photosynthetic electron transport rate and photosynthetic phosphorylation and RuBPCase activity will be reduced, so as to mitigate the effects of alkaline stress on ryegrass leaf photosynthetic rate and seedling growth. (3) The study showed that [6] The appropriate concentration of lanthanum nitrate treatment can greatly improve the chlorophyll content of melon leaves, especially in the flowering stage and flowering stage, so we improve greatly the photosynthetic efficiency and promotes the growth and development of the plant process. The high concentration of lanthanum nitrate treatment melon leaf chlorophyll and carotenoid content in expansion melon period were lower than those of the control, the high concentration of lanthanum nitrate processing in the late growth stage of melon leaf photosynthetic pigment inhibited. Carotenoids in the chloroplast synthesis and accumulation, quenching Triplet chlorophyll clear singlet oxygen protection chlorophyll. Carotenoids content decreased, may be due to a high concentration of lanthanum nitrate that have hurt photosynthetic tissues so that excess energy generated a large number of singlet oxygen, resulting in carotenoids consumed, further exacerbating the chlorophyll of harm. (4) 20 mg · L - 1 La( NO3)3 was added to the minimal medium, 0. 2 mg · L - 1 of IAA and 0. 2 mg · L - 1 of the IBA, Amygdalus pcdunculata pall of rooting effect is the best. Under this condition the root induction frequency of, root length and root number you do better than any other treatment group had significant improvement. 2. La (NO3)3 Amygdalus pedunculata test-tube plantlet root induction frequency and each plant root average number is greater than the effect of IBA and IAA. 3. In the add 20 mg · L - 1 lanthanum nitrate medium Amygdalus pcdunculata pall root cells has the highest activity for control of 2. 49 times. But with the lanthanum nitrate dose increase of root cell viability is no significant change in. 4. The basic culture medium supplemented with 20 mg · L - 1 of the La(NO3)3,0. 2 mg • L-1 of IAA and 0. 2 mg · L - 1 of the IBA of Amygdalus pedunculata test tube seedling transplanting domesticated after 2 months of transplanting survival rate of 94%, plant height is control of 1. 53 times. [lanthanum nitrate in chemical engineering application of (1) lanthanum nitrate added can help reduce calcium magnesium zinc metal oxide catalytic system of the most suitable amount and the optimum temperature, however this effect with lanthanum nitrate proportion rising of decreased lanthanum nitrate addition on the optimum reaction time and does not play a significant role in. Reaction time and reaction temperature in SYN thesis of decline (lanthanum nitrate addition is beneficial to reduce the biodiesel production cost, more conducive to the industrialization application. The modified Catalyst has a relatively rich pore structure, beneficial to the transesterification reaction, which makes it more complicated to explain its good catalytic effect of [8]. (2) researchers [9] used to slowly warm up of combustion of coal sample with nitric acid-perchloric acid-hydrofluoric acid digestion decomposition to lanthanum nitrate as matrix modifier, GFAAS determination of high and low background content of coal, beryllium, has low detection limit, wide linear range, precision and high accuracy advantages. Lanthanum interference elements in conjunction with generating a thermally stable refractory, difficult to evaporate, difficult from the compound of beryllium released lanthanum played not only ashing temperature, and relatively lower atomization temperature dual role of extension of the graphite tube of life. The method has the advantages of simple operation, without graphite tube pre-treatment, which has strong stability and adaptability is applicable not only to coal for determination of beryllium in, and can be applied to other substrates for determination of beryllium in. The Matrix and the interference of coexisting elements when found: Al, Ca, Mg, Na, Ti, Ba, Cu, Cr, Pb, Mo, and the mixtures of elements positive interference, fe, P, Mn, V, Ni is negative interference and coexisting elements after mixing, the mixture with Al positive interference effect is almost the same, it's possible that other elements of the positive and negative interference cancel each other out, the result of the interaction of, it is also possible to each other is generated between the refractory hard from the complex, the mechanism of action of which need further research. (3) the experimental results show that [10], lanthanum nitrate crystalline hydrate synthesis of cyclohexanone glycol Ketal catalyst possessed good catalytic activity, and that the optimal reaction conditions are: cyclohexanone 0 .3 mol , n (cyclohexanone): n (ethylene glycol) = 1 ∶ 1.5, water-carrying agent 30 mL of toluene Reflux reaction time 2.0 h, the amount of catalyst was 0.25g, Catalyst was reused for good performance. |
| effect of lanthanum nitrate on animals | low dose Excitatory effect of lanthanum nitrate on learning and memory in mice and its association with cAMP response element binding protein (CREB) and Jun-N-terminal kinase (JNK) protein phosphorylation levels in the study. ICR mice were exposed to 0.002, 0.02, 0.2, 2, 20 mg/kg lanthanum nitrate for 4 weeks, and the reaction time and error times of water maze of mice were determined every day, the hippocampus and cortex of mice were isolated, and the contents of p- CREB and p- JNK were determined by western blot. [Result] the reaction time of mice in water maze gradually decreased with the increase of dose at the 4th week, and then prolonged gradually. The reaction time of 0.2 mg/kg group was the shortest; the number of errors showed the opposite trend, and the number of errors in the 2 mg/kg group was the lowest. The phosphorylation levels of CREB (0.2) and JNK (6.20±3.2) in the hippocampus of mice in the 4.11±2.92 mg/kg dose group increased after 4 weeks of lanthanum nitrate exposure, Compared with the solvent control group, the difference was significant. There was no significant difference in the phosphorylation of CREB and JNK between the mice exposed to lanthanum nitrate and the control group. The phosphorylation levels of CREB and JNK protein in the hippocampus of mice were increased by oral exposure to lanthanum nitrate, which was consistent with the change of learning and memory ability of mice, it is suggested that low dose lanthanum nitrate may promote the spatial learning and memory of mice by increasing the phosphorylation level of learning related proteins. |
| Reference materials | [1] Shen Yi Wen, Edited by Wang Jitao. Compound Dictionary. Shanghai: Shanghai Dictionary Publishing House. 2002. Page 149. [2] Ma Shichang, editor-in-chief. Dictionary of inorganic compounds. Xi'an: Shaanxi Science and Technology Press. 1988. Page 235. [3] Ma Shichang, editor-in-chief. A Dictionary of chemical substances. Xi'an: Shaanxi Science and Technology Press. 1999. Page 728. [4] Wei Ming, Yang Chao-ying, Kong Fang, etc. Effects of lanthanum nitrate and orchid mycorrhizal fungi on physiological characteristics of dendrobium officinale [J]. Journal of Northwest Botany, 2015,35(2):309-314. [5] Liu Jianxin, Wang Xin, Hu Haobin, etc. Effects of lanthanum nitrate on growth and photosynthetic physiology of ryegrass seedlings under alkaline stress [J]. Plant Research, 2010,30(6):674-679 [6] Zhao Yijie, Zhang Xiaohong, Lin Hang et al. Effects of lanthanum nitrate on physiological indexes of melon leaves and fruit quality [J]. Journal of Yunnan Agricultural University, 2010,25(1):95-101. [7] Guo Lizhu, Chen Bang, Zhou Pan, etc. Effects of lanthanum nitrate on rooting of test-tube plantlets of Amygdalus pedunculata L. [J]. Chinese Journal of rare earths, 2014,32(5):628-635. [8] Li Xue, Zhou Ziyuan, Tang Yong, etc. Preparation of biodiesel using lanthanum nitrate modified calcium magnesium zinc catalyst [C].// Proceedings of the 2012 annual meeting of China Chemical Industry Society and the 3rd oil supplement and alternative energy development and utilization Technology Forum. 2012:95-99. [9] Zhao Xuehong, Wang Xinyan, Guo Pei, etc. Determination of beryllium in coal samples by graphite furnace atomic absorption spectrometry with lanthanum nitrate as matrix modifier [J]. Rock and mineral testing, 2015,34(1):60-66. [10] Zhang Rongli, Huang Chunyuan, Liao Weilin, etc. Synthesis of cyclohexanone glycol Ketal catalyzed by lanthanum nitrate [J]. Industrial Catalysis, 2006,14(11):49-51. |
| Application | used for the production of light and optical glass |
Last Update：2024-04-10 22:29:15
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