Lactic acid has characteristics,such as hot stability natural purely with soft and certain tart flavor,etc.Widely used in the food,pharmaceutical,electroless plating industries,etc.
Basical Information:
CAS#: 50-21-5
M.F.: C3H6O3
EINECS NO.: 200-018-0
Appearance: Colorless Transparent Viscidity Liquid
Lactic Purity: 80.0-90.0%
Item Unit Quality Standards Analysis Results
Color Appearance Smell
Chromaticity Hazen Colorless to pale yellow, Transparent liquid,No odor or slightly
characteristic odor, Max.100 Light yellow Transparent liquidNo odor<100
Identification --- Pass Test Pass
Lactic acid content % w/w 95%-105% 80.20
L(+)Lactic acid to total lactic acid content % L(+) Min. 97.5 >97.5
Burning residue % w/w Max. 0.1 0.04
Chloride ppm Max. 20 <20
Sulfate ppm Max. 50 <50
Iron ppm Max.10 <10
Reducing substances (sugars) --- Pass Test Pass Test
Citric acid, oxalic acid, tartaric acid and phosphoric acid --- Pass Test Pass Test
Easy Carbon Compounds --- Pass Test Pass Test
Cyanide mg/kg Max. 1 <1
Lead mg/kg Max. 2.0 0.5351
Arsenic mg/kg Max. 1.0 0.6315
Chlorphenesin, a preservative, is widely used in cosmetics and compatible with most preservatives, including potassium sorbate, sodium benzoate, and methylisothiazolinone.
In cosmetics and personal care products, Chlorphenesin helps to prevent or retard the growth of microorganisms, and thus protects the product from spoiling. Chlorphenesin may also function as a cosmetic biocide, which means that it helps prevent the growth of microorganisms on the skin which reduces or prevents odor.
Product name Chlorphenesin
Appearance White powder
Purity 90% min
CAS No. 104-29-0
Shelf time 2 years, keep away sunlight, keep dry
PRODUCT SPECIFICATIONS
Product Name: Trehalose dehydrate
CAS number 99-20-7
ANALYSIS ITEMS SPECIFICATION TEST METHOD
Appearance White crystalline powder
Purity(trehalose) 98.0%
Loss on drying 1.5%
PH 5.0-6.7
Color 0.1
Turbidity of solution 0.05
Lead 0.5mg/kg
Residue on ignition 0.05%
Viable counts 300cfu/g
Yeasts and moulds 100cfu/g
Coliform organisms 30MPN/100g
Pathogenic Negative
Packing Pack in paper-drums and two plastic-bags inside N.W. 25 kgs I.D.35xH51cm.
Storage Store in a well-closed container away from moisture, light, oxygen.
Shelf Life 24 months under the conditions above and in its original packaging
Lactobionic acid is a compound composed of lactose and glucose, belonging to a type of bionic acid. It has strong acid neutralizing ability and metal ion chelating ability, and has antioxidant and moisturizing properties.
Lactobionic acid is often used in skin care products.
Lactobionic acid has various functions and benefits in skin care products as follows:
1. Antioxidant effect: Lactobionic acid is a powerful antioxidant that can neutralize free radicals and resist oxidative damage caused by environmental pollutants and ultraviolet radiation. Antioxidant action helps reduce oxidative stress in the skin, preventing the appearance of signs of aging such as wrinkles and fine lines.
2. Moisturizing effect: Lactobionic acid has excellent moisturizing ability. It attracts and locks in moisture and maintains the skin's moisture balance, thus keeping the skin elastic, supple and hydrated.
3. Exfoliation and skin regeneration: Lactobionic acid is a mild fruit acid that can effectively remove dead skin cells on the stratum corneum and promote horny renewal. Not only does this improve skin texture and even skin tone, but it also stimulates the production of collagen and elastin fibers, accelerating the skin cell regeneration process.
4. Anti-inflammatory and repairing: Lactobionic acid has anti-inflammatory and repairing effects, which can reduce skin redness, tingling and allergic reactions. It helps soothe sensitive skin and promotes the repair and healing of damaged skin.
5. Brighten skin tone: By promoting cell metabolism and removing aging cells on the surface, lactobionic acid can improve uneven skin tone and make skin brighter and smoother.
Introduction
Betaine Salicylate is a mild BHA (beta-hydroxy acid), specifically a salicylic acid derivative. It is primarily extracted from sugar beet and has a gentler exfoliating action compared to traditional salicylic acid. It is often preferred in skincare products because of its lower irritation potential while still delivering effective results.
Function
Exfoliation: It works as a keratolytic agent, meaning it gently removes dead skin cells from the surface of the skin, unclogging pores and preventing acne formation.
Anti-Inflammatory: As a derivative of salicylic acid, Betaine Salicylate possesses anti-inflammatory properties that can help soothe redness and inflammation associated with acne and other skin irritations.
Oil Regulation: By regulating sebum production, it helps to control oily skin and prevent clogged pores, thereby reducing the occurrence of blackheads and whiteheads.
Application
Acne Treatment: Betaine Salicylate is commonly found in acne-fighting cleansers, toners, serums, and spot treatments where it targets pimples, blackheads, and whiteheads.
Anti-Aging: Its gentle exfoliating nature makes it suitable for incorporating into anti-aging products as it encourages cellular turnover, which can lead to a smoother, more radiant appearance.
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Introduction
Homosalate CAS 118-56-9 is an organic compound used in some sunscreens. It is made by the Fischer-Speier esterification of salicylic acid and 3,3,5-trimethylcyclohexanol, the latter being a hydrogenated derivative of isophorone. Contained in 45% of U.S. sunscreens, it is used as a chemical UV filter. The salicylic acid portion of the molecule absorbs ultraviolet rays with a wavelength from 295 nm to 315 nm, protecting the skin from sun damage.
Application
The primary application of Homosalate is in sun care products such as sunscreens, lotions, and moisturizers to provide protection against damaging UV rays.
1. Octocrylene is a UV-B filter that is approved in the USA, Europe, and Japan for use in sun care preparations.
2. Octocrylene is miscible with many cosmetic oils, it can easily be incorporated into the oily phase of an emulsion
3. Octocrylene is hydrophobic and oil-soluble, it is preferred for water-resistant and water-repellant formulations octocrylene is also compatible with all common plasticizers.
Function & Application
Octocrylene is a UVB sunscreen with strong water-resistant properties and a rather broad-band absorption range. It exhibits good photostability and is being evaluated by many companies as an effective SPF booster and waterproofing enhancer.
This is an expensive ingredient with an approved usage level of 7 to 10 percent in both the United States and the European Union. Although gaining in popularity among formulators, its cost and usage level can limit use. In addition, some studies are indicating it may cause allergic reactions in the skin with a history of photoallergy.
Use:
Octocrylene is chemically related to cinnamates. It can be used to boost SPF and improve water resistance in a given formulation.
Octocrylene is photostable and can improve the photostability of other sunscreens. It is expensive and can present difficulties in the formulation.
Item Specification
Appearance Colorless or light-yellow liquid
Odor Very weak, characteristic
Solubility Soluble most organic solvent, insoluble in water
Acidity No more than 0.8ml of 0.1N NaOH consumed
Acid value â?¤1.0mg KOH/g
Refractive index 1.542-1.548
Specific gravity 1.005-1.013
Peroxide Value 1.0mg/kg Max.
Color (Hazen) 70 Max
A 1%/1cm (310nm in ethanol) 850 Min
Assay 95.0%-105%
Purity (GC) 98% Min
Individual impurity 0.5g/100g Max.
Total impurities 2.0g/100g Max.
Saponification value 189 Min.
3. Application field
Octyl Methoxycinnamate (OMC) is one of the safest and mostwidely used UV B filters.
OctylMethoxycinnamate can easily be dispersed into oil phase of anemulsion. It is compatible with most cosmetic materials and can beemulsified either hot or cold. depending upon the emulsifier.
Octyl Methoxycinnamate (OMC) offers absorption of UV B radiation from 290 to 320 nm.
Octyl Methoxycinnamate (OMC) is ideal for use in sun-care and skin-care products for everyday protection.
Octyl Methoxycinnamate (OMC) is suitable for the formulation of sun-protection products.
2-Ethylhexyl Salicylate, or octyl salicylate, is an organic compound used as an ingredient in sunscreens and cosmetics to absorb UVB (ultraviolet) rays from the sun. It is an ester formed by the condensation of salicylic acid with 2-ethylhexanol. It is a colorless oily liquid with a slight floral odor.
The salicylate portion of the molecule absorbs ultraviolet light, protecting skin from the harmful effects of exposure to sunlight. The ethylhexanol portion is a fatty alcohol, adding emollient and oil-like (water resistant) properties.
Test Items Specifications Results
Appearance Colorless to pale yellow liquid Colorless liquid
Odour Slight characteristic Slight characteristic
Identity (IR) USP<197F> Matches reference spectrum Matches reference spectrum
Identity (Retention time) USP<621> Matches reference retention time Matches reference retention time
UV Specific extinction
(E1%1cm,310nm, ethanol) USP<197U> 165-185 175
Specific gravity(25ºC) USP<841> 1.011-1.016 1.015
Refractive index(20ºC) USP<831> 1.500-1.503 1.503
Acidity(ml/ml) Titration (USP) 0.2 0.0ml/ml
Chromatographic purity GC USP<621> Purity (%) 99.0 99.6
Ethylhexanol(%) 0.1 <0.6ppm (LOD)
Methyl salicylate (%) 0.1 <2.3ppm (LOD)
Each impurity (%) 0.5 0.2
Total impurities (%) 2.0 0.4
Assay (%) USP<621> 95.0-105 100.9
Conclusion Meet all the requirements of USP standards
1.Can be used as a photo initiator in UV-curing applications such as inks, imaging, and clear coatings in the printing industry.
2.Prevents ultraviolet (UV) light from damaging scents and colors in products such as perfumes and soaps. 3.It can also be added to the plastic packaging as a UV blocker. Its use allows manufacturers to package the product in clear glass or plastic. Without it, opaque or dark packaging would be required.
Product Name Etocrilene; Ethyl 2-cyano-3,3-diphenylpropenoate
Cas no. 5232-99-5
MF C18H15NO2
MW 277.32
Appearance white powder
Purity 98.0%
Package 25kg/drum, or as requested.
Tungsten is a metallic element with the symbol W and atomic number 74, belonging to the VIB family of the sixth cycle in the periodic table. Tungsten is mainly a hexavalent cation in nature, with an iron radius of 0.68 Ã?? 10-10m. Due to the small radius of W6+ions, high electricity price, strong polarization ability, and easy formation of complex anions, tungsten is mainly in the form of complex anions [WO4] 2-, which combine with cations such as Fe2+, Mn2+, Ca2+in the solution to form precipitates of wolframite or scheelite.
specification Diamter(mm) Tolerance Max length(mm)
sintering,Forging,Spinning Forging and polishing 1.0-10 ±0.1 3000
10-20 ±0.1 2000
20-50 ±0.1 1500
50-70 ±0.2 1000
70-90 ±0.2 800
>90 Be customized
Specifications: main content Re 99.99% (calculated by subtraction method, excluding gas elements)
Application: Rhenium element standard sample; Rhenium element additive for various superalloys; Base material for various rhenium components; 3D printing and others
Other trace metal impurity , analysis method: ICP-MS Gas element (â?¤, analysis method: LECO
Na
0.0005%
Ti
0.0001%
Cu
0.0001%
Sb
0.0001%
Mg
0.0001%
V
0.0001%
Zn
0.0001%
Ta
0.0001%
Al
0.0005%
Cr
0.0005%
As
0.0001%
W
0.0005%
Si
0.0005%
Mn
0.0001%
Zr
0.0001%
Pb
0.0001%
P
0.0005%
Fe
0.0008%
Mo
0.0010%
Bi
0.0001%
K
0.0005%
Co
0.0001%
Cd
0.0001%
Se
0.0001%
Ca
0.0005%
Ni
0.0001%
Sn
0.0001%
Tl
0.0001%
O
0.01%
C
0.002%
N
0.001%
H
0.005%
Applications
1. It is used to make heat-resistant and corrosion-resistant alloy.
2.Used for making high temperature thermocouple, special filament and catalyst in organic synthesis industry.
It is a reddish brown, glossy columnar crystal or crystalline powder. Odorless, no change in air exposure, soluble in water and alcohol. Methylene blue is mild and safe to use, and it also helps to improve the respiratory function of fish.
Main Uses:
1) methylene blue can be used for dyeing;
2) Superior product methylene blue can be used for sterilization and disinfection;
3) Industrial grade methylene blue is used for dyeing cotton, acrylic fiber, hemp, silk and paper, and is also used for coloring bamboo and wood and for making ink (red ink) and color lake;
4) Analysis of pure methylene blue used as REDOX indicator, adsorption indicator and biological stain in chemical reagents, such as the determination of tin, boron and other metals, mixed indicator for serum protein test, shed cell test staining solution, basic methylene blue staining solution.
5) Analysis of pure methylene blue used for the determination of tin. Reductive titrant used to precipitate perchlorate and rhenate. Determination molybdenum by catalytic spectrophotometry.
6) Detoxification drugs, can be used for nitrite, sulfonamide, cyanide poisoning antidote.
7) Methylene blue for the development of new materials.
8) Bacterial stain.
Chloric acid is also called "gold chloride" and "gold chloride tetrahydrate". The chemical formula is HAuCl4 �· 4H2O. The molecular weight is 411.85. Yellow needle shaped crystals. Poisonous! Corrosive. Easily soluble in water, soluble in ethanol, ether.
1. It can be used for partial gold plating of semiconductor and integrated circuit lead frames, printed circuit boards, and electronic connectors
2. Mainly used for gold plating, special inks, medicines, porcelain gold and red glass, etc., as well as raw materials for the production of various gold compounds, photographic industry and chemical reagents.
3. Used to prepare stable nano-scale and underivatized colloidal gold particles in the form of solution
Use instructions
Important intermediates for organofluorine synthesis, advanced chemical synthesis, fluorine-containing surfactants, electroplating intermediates
Linalool is one of the most frequently used fragrance and perfumery substance and is produced in large quantity. Because of its relatively high volatility it imparts naturalness to top notes. Since, Linalool is alkali-stable; it can be applied in soaps and detergents. Linalyl esters can be prepared from Linalool.Flowery fresh odor, reminiscent of Lily of the Valley.
Dimethyl sulfoxide is an extremely important non proton polar solvent that is soluble in both water and organic solvents, it mainly used in dye, acrylic fibers, paint, coating, antifreeze and agriculture.
Application:
1. DMSO can be used for the extraction of arene, also as the reaction medium used for resins and dyes, and applied to acrylic polymerization and spinning solvent.
2. DMSO can be used as an organic solvent, reaction medium and the intermediates of organic synthesis. It is highly versatile. This product has a highly selective extraction capacity, and can be used as the polymerization and condensation solvent of acrylic resin and polysulfone resin, as the polymerization and spinning solvent of polyacrylonitrile and cellulose acetate, as the extraction solvent for separating alkanes and arenes, and as the reaction medium for the arenes, butadiene extraction, acrylic fiber, plastic solvents, organic and synthetic dyes, and pharmaceuticals industries. In the field of medicine, dimethyl sulfoxide has anti-inflammatory and analgesic effect with a strong capability of penetration through the skin, and thus being able to dissolve certain drugs and boost their penetration into the human body to achieve the therapeutic purposes. Taking this carrier property of dimethyl sulfoxide can make it be used as pesticide additives. Add a small amount of dimethyl sulfoxide in some pesticides can facilitate the penetration of pesticides into the plant in order to improve the efficacy. dimethyl sulfoxide can also be used as the dye solvent, dye removing agent, and dye carrier for the synthetic fibers. It can also be used as the absorbent of recycling acetylene and also the modifiers of synthetic fiber, antifreeze agent and the capacitor dielectric, brake oil, and extractant of the rare metals.
3. DMSO can be used as analytic solvents and fixing agent of gas chromatography as well as the solvent for analyzing UV spectra
Rhodium is also called trichloride rhodium is a kind of red brown powder easy deliquescence
Poisonous
No water molecular weight 20926 melting point of 450 500 C decomposition
The boiling point of 800 C sublimation
To generate more fluoride above 600 C
70 C can be hydrogen reduction
Insoluble in water acid soluble in cyanide Chemicalbook solution
In the concentrated acid sulfuric acid heat decomposition
When heated with sodium aluminum magnesium iron and other metals
Introduction:
4-hydroxyethyl piperazine ethosulfonic acid (HEPES) is an important hydrogen ion buffer, which has a good buffer ability in the pH range of 6.8 to 8.2, and can control a constant pH for a long time. Using a concentration of 10 ~ 50mmol/L, the general culture medium containing 20mmol/L 4-hydroxyethyl piperazine taurine can have a good buffer capacity, and has no toxic effect on cells.
Application:
HEPES (4-hydroxyethyl piperazinethesulfonic acid) is a non-ionic amphoteric buffer with high polarity, and is inert to a variety of chemical reagents and enzymes. It does not participate in and interfere with the process of biochemical reactions, and has no inhibitory effect on enzyme chemical reactions. Therefore, it can be used specifically for the research of proteins and enzymes that are highly volatile and ph-sensitive to organelles and very volatile.
Buffer solution preparation:
(1)hepes buffer can be directly added to the prepared culture medium according to the desired concentration, and then filtered to remove bacteria. 2.38 g HEPES was added to each 1000ml of culture medium, the pH was adjusted to 7.2 with lNNaOH after dissolution, and the bacteria were removed by filtration before use. At this time, the concentration of HEPES was 10mmol/L.
(2) 100x storage solution (lmol/L) could also be prepared. Before use, 99ml culture solution was added to lml storage solution, and the final concentration was 10mmol/L. lmol/L (100x) hepes buffer was prepared as follows: 23.8gHEPES was dissolved in 90ml double distilled water, the pH was adjusted to 7.5-8.0 with lNNaOH, and then the water was fixed to 100ml, filtered to remove bacteria, divided into vials (2ml/ bottle), and stored at 4�ºC or -20�ºC.
Purpose:
1.Biological buffer; Reaction buffer, prehybridization buffer and hybridization buffer for isolation and analysis of RNA nuclear fraction; For RNA with T4RNA
2.Molecular biology grade is used for RNA3' -end labeling with T4 RNA ligase
3.Cell-cell adhesion, short-term cell aggregation culture, cleaning of tissue and cell buffer
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