carbohydrazide can act as an oxygen scavenger to prevent corrosion, especially in boiler feedwater systems, rocket propellant assemblies, color image and soap stabilizers, antioxidant rubber, boiler water deoxidizers and metal passivators. Carbohydrazide can also be used as an anticorrosive agent. Organic synthesis of intermediates.
CAS No. 497-18-7 EINECS 207-837-2
Molecular Formula CH6N4O Molecular Weight 90.08
Attributes:
Carbohydrazide is a white crystalline powder or granule. The effective content of carbohydrazide is from 98.0 to 100.0%.
Specifications:
Items
Index
Appearance
White crystal line powder or pellets
Active Content (%)
98.0-100.9%
PH (12% Solution, @ 25 ℃)
8.45±1.25
Free Hydrazine
≤250ppm
Chloride (Cl)
≤10ppm
Sulfate (SO4)
≤20ppm
Silica (SiO2)
≤10ppm
Copper (Cu)
≤1ppm
Iron (Fe)
≤4ppm
Sodium (Na)
≤4ppm
Lead (Pb)
≤4ppm
Moisture
≤0.2%
Packaging and storage:
Pack 25 kg or 50 kg with woven bags or fiber drums.
Store in a cool, dry, well-ventilated area away from incompatible materials. Please close the container when not in use.
Carbohydrazide CAS NO. 497-18-7 carbohydrazide,carbohydrazide water treatment,carbohydrazide suppliers,carbohydrazide as oxygen scavenger,carbohydrazide oxygen scavenger Jinan Forever Chemical Co., Ltd. , https://www.jinanforever.com
So, what kind of furniture is the real solid wood furniture? Does the higher the solid content rate mean the higher quality?
Cui Yongyuan once ridiculed the solid wood furniture on Sohu Weibo: the meaning of solid wood is really not wood!
In August, at the 2011 China Solid Wood Furniture Development Summit held in Shanghai, Chen Baoguang, vice chairman of the China Furniture Association and secretary general of the Solid Wood Furniture Committee of the China Furniture Association, also expressed confusion about the “solid wood furniture standardâ€. At the forum, Liu Yiguo, secretary general of the China Furniture Standardization Technical Committee, pointed out that the standard of solid wood furniture should include: evaluation criteria for product quality, safety and hygiene standards for furniture, and standards for market regulation. According to industry sources: solid wood is a handicraft product, it is difficult to standardize. Before the industry has introduced some standards, but the company basically does not pay, so the standard can not be implemented, "no disease", consumers know little about solid wood standards It will take for granted that the market is chaotic.
So initiated by Beijing, Shanghai, Shenzhen, Jinan, Xi'an, Hangzhou, Shenyang 7 to jointly investigate the solid wood furniture market in the local home store, intending to "uncover" the real situation of solid wood furniture.
The survey city: Jinan reporter spent two days in the afternoon to visit the more representative home store in Jinan, conducted a more in-depth investigation on the issue of solid wood furniture, and interviewed some industry, consumers and media people.
Jinan solid wood furniture market problem one: the concept of solid wood furniture is unclear, the standard confusion in the reporter's visit to the solid wood furniture store, found that the general guide on the definition of solid wood furniture is not clear, and some shopping guide said: "As long as the solid wood composition contains more than 30% Known as solid wood furniture, and some shopping guides say that solid wood content is more than 60% can be called solid wood furniture. There is also a discrepancy in the meaning of "pure solid wood furniture". The clerk from the cedar wood furniture believes that the base material and auxiliary materials of the furniture all use the same kind of wood, which is pure solid wood furniture, otherwise it can not be called pure solid wood furniture. This statement was refuted by another brand clerk.
Manager Zhao from Jinan Shunmu Solid Wood Custom Furniture said: In fact, after the revision of the "General Technical Conditions for Wood Furniture" standard in 2009, the definition of solid wood furniture is very clear. The classification and naming of solid wood furniture is actually very Strictly stipulated, the standard clearly stipulates that: according to the proportion and process of solid wood materials, it is divided into three categories: “all solid wood furnitureâ€, “solid wood furniture†and “solid wood veneer furnitureâ€. Among them, all solid wood furniture refers to “all wood partsâ€. (Except for mirror pallets and beading), furniture made of solid wood sawn timber or solid wood panels. Solid wood furniture refers to “the furniture made of solid wood sawn timber or solid wood panels, and the surface is not covered with furnitureâ€. Solid wood veneer furniture refers to "the base material is made of solid wood sawn timber or solid wood sheet, and the surface is covered with solid wood veneer or thin wood (wood veneer) furniture." Solid wood sawn timber refers to “the raw wood is directly sawn into the specifications required for the production of furniture, and the material after drying.†The solid wood board is a “solid wood material formed by secondary processing of finger joints, laminated timber, etc.â€. (For the interpretation of solid wood furniture, please refer to the "General Technical Conditions for Wood Furniture" standard (GB/T3324-2008)). However, due to the lack of supervision and implementation by the regulatory authorities, the current market is not standardized and chaotic. Some consumers do not even I know that there is a national norm. At present, most of the solid wood furniture on the market is made of wood-panel furniture, or "comprehensive wood furniture."
Jinan solid wood furniture market problem 2: product labeling is not standardized in the reporters visited these home stores, almost all of the solid wood furniture store product label on the "product classification" column is blank; when the reporter asked why When the product classification is not marked, the salesperson's explanation is: the product classification is the substrate and auxiliary materials marked on the label. Obviously this explanation is very far-fetched. The reporter then interviewed Mr. Zhang, a senior reporter from a home media in Jinan who met in the store. He said: In fact, this kind of signage is not standardized, but it is a common practice in the furniture industry. Some furniture manufacturers are afraid to make signs, so as to avoid "real" consumers to get into the details and cause a lot of trouble. The reporter saw that there are still some furniture products in the labeling of the "auxiliary materials" column does not make any mark, when the reporter asked, the salesperson's reply is: because the substrate and auxiliary materials used in the product are the same, so Only the substrate is marked, and the auxiliary materials are not specially marked. However, the reporter saw in other furniture stores that even if the substrate and the wood used in the auxiliary materials are the same, the auxiliary materials will be marked.
In this phenomenon, Manager Zhao from Jinan Shunmu solid wood custom furniture has another insight, he believes: At present, this product label is actually not much meaning. Meaningful labeling should first clarify the substrate, excipients, and then it should be clear which part is the substrate, which part is the excipient, and then the type of surface paint, such as a bed, what wood is used, which part, bedside, What material is used at the end of the bed, what is the connection method, what is used in the bed, what is used in the bed box, what is used for the board, it should be marked clearly. Even if there are more manufacturers, even if there are dozens of series, each series has 5 or 6 pieces of furniture, which is only a few hundred pieces. It is not difficult to mark one. Moreover, modern solid wood furniture enterprises have a high degree of industrialization, and the standardization and intensive production ability of furniture components are very strong, and there is no problem that it is difficult to unify standards by traditional hand-made.
Jinan solid wood furniture market problem three: solid wood furniture hype over-promotion of false reporters found that there are many brands of solid wood furniture on the market, not only from Guangzhou, Shenzhen, Zhejiang, Beijing and other places of origin and local products in Shandong Province, there are many Imported products; the wood species used are also varied: rosewood, black walnut, tiger wood, eucalyptus, oak, ebony wood, ash, maple birch, etc.; but in fact some products are seriously out of touch with the facts, according to a home Mr. Zhang, a senior media reporter, revealed that some of the well-known brands used in the woods were actually cypress, but they all claimed to use Wujinmu; the other was artificially made of gimmicks on the names of wood species, such as now popular. Wujinmu is actually a zebra wood that has been used for many years in the decoration and solid wood products industries.
In the face of a dazzling array of solid wood furniture products, consumers are often caught. The reporters who followed up to buy furniture, have said: Although the product is marked with the wood used for the substrate and auxiliary materials, but because it is not Experts, so there is no way to tell whether it is genuine or not. There is a lot of doubts about this, and the so-called substrate and auxiliary materials are too general. For consumers without any industry knowledge, it is of little significance.
Regarding this concern of consumers, the reporter interviewed the palace manager of Modica's solid wood furniture. He said: In fact, this problem is very easy to do. Consumers are required to indicate in the contract whether the material is pure solid wood furniture or solid wood furniture. If you are willing to write a contract, there is usually no problem. In addition, consumers can also observe through the joints, sections, internal holes, etc. in the furniture, to see if it is solid wood; it can not be determined, but also through destructive identification.
Jinan solid wood furniture market problem four: market supervision is not in place, the lack of social integrity For the current problems in the Jinan solid wood furniture market, I believe that there are many other places. During the interview, the reporter interviewed a staff member of a home store and asked whether the solid wood furniture brand had undergone strict checks when entering the store. The staff said: The check is definitely there, and the qualifications and brand image of the manufacturer will be reviewed, but For the quality appraisal of the product, it is still impossible to strictly identify it. It can only rely on the quality inspection of the relevant departments on a regular or irregular basis. If the unqualified products are spotted, the store will make a clearing treatment or rectify within a time limit. The reporter found that the check and supervision of the mall can only play a certain role; the constraints of the relevant furniture associations are only soft, and in many cases rely on the self-discipline of the manufacturers; there is currently no mandatory department to work on solid wood furniture. The block is supervised; however, some manufacturers said in the interview: On the other hand, if the supervision is too strict, the merchants can't do it, and they all do solid wood or solid wood furniture in a strict sense. The cost is too high, plus The cost of logistics and store sharing, the pricing of furniture will be very high, and only a few people can accept it. This is contradictory.
Manager Zhao of Jinan Shunmu solid wood custom furniture said: In fact, this matter still has to be put into the big environment, the society lacks integrity, especially in the food and building materials industry, consumers are very wary, a little bit different, consumers are easy Denying a business, so businesses are always eager to cater to consumers, but this kind of catering is very blind.
Jinan solid wood furniture market problem five: consumer's consumption concept is generally misunderstood in the reporter's "Eleven Consumption Survey: Jinan area solid wood furniture purchase articles" survey found that 93% of the consumers surveyed Think that solid wood furniture is 100% pure solid wood. This aspect reflects that consumers' definition of solid wood furniture is not very clear; during the reporter's visit, it was found that there are very few consumers who understand the standard of General Technical Conditions for Wood Furniture revised in 2009. On the other hand, it is also misled by the overwhelming concept of “all solid wood†and “pure solid woodâ€.
The manager of the Modica Palace interviewed by the reporter said: In fact, not all furniture parts use the same kind of wood. For example, the use of paulownia in the bottom plate of some drawers will reduce the bearing pressure of the bearing. In the "General Technical Conditions for Wooden Furniture" standard, solid wood furniture is defined as "the furniture made of solid wood sawn timber or solid wood panels, and the surface is not covered with furniture." Some of the components in solid wood furniture may be artificial, such as decorative lines, molding strips, etc., may be MDF engraving, and then glued, but this does not prevent it from being called solid wood furniture.
Manager Zhao of Jinan Shunmu solid wood custom furniture said: In fact, sometimes it is impossible to push all the problems to the merchants. The merchants are actually having difficulties. The consumers also have some problems. If the merchants clearly tell the consumers, the furniture is a combination of board and wood. Many consumers may not buy it; consumers hold ideal consumer expectations, and often do not understand the high cost of solid wood furniture, the characteristics of solid wood furniture structure, the characteristics of wood itself, once he knows that this product is not Pure, the first impression is broken, no business is willing to undermine the consumer's first impression, so in order to cater to the psychological needs of consumers, businesses will do some false propaganda. Of course, this problem is not to say that consumers do not do well, but that consumption concepts need to change.
Jinan solid wood furniture market chaos "glamorous eyes" five major issues highlighted
[Foreword] The discussion on "What is solid wood furniture" in the industry and the outside world has been undecided, and the three major furniture exhibitions in Jinqiu have once again set off a hot discussion on solid wood furniture.