In daily decoration, a variety of chemical materials are indispensable: * * formaldehyde resin adhesive * * is used for board bonding (environmental protection grade E0 is required), * * latex paint * * (including acrylic lotion) is used for wall painting (low VOC certification is required), * * silicone sealant * * is used to fill gaps, * * epoxy resin * * is used to bond metal/ceramics, * * cement * * and * * tile adhesive * * are used to pave the floor, * * polyurethane waterproof coating * * is used to treat toilets (gas masks are required for construction), * * wood preservative * * (such as ACQ) is used for outdoor anti-corrosion, * * thinner * * (including xylene) is used to prepare paint (flammable and ventilation is required).

In addition, there are * * putty powder * * leveling wall surface, * * stone maintenance agent * * anti fouling, etc. For safety reasons, it is recommended to prioritize water-based/formaldehyde free products, wear masks and gloves during construction, and fully ventilate and air dry after completion.

Potassium sulfate is a high content and quick acting potassium fertilizer, mainly prepared from sulfate ore anhydrous potassium magnesium aluminate and potassium chloride as raw materials. It is a white or light yellow crystalline particle with two crystal forms, α - and β -. The α - type is a colorless crystal in the hexagonal crystal system, while the β - type is a colorless crystal in the orthorhombic crystal system. It has a bitter and salty taste.

Generally, it contains 90% to 95% potassium sulfate, 50% to 52% potassium (K2O), 16% sulfur (S), and less than 2.2% chlorine (Cl); In addition, there are small amounts of sodium (Na), calcium (Ca), magnesium (Mg), bromine (Br), etc., which are insoluble in ethanol, acetone, and carbon disulfide, but easily soluble in water and can be directly absorbed and utilized by plants. They can be used as base fertilizer, seed fertilizer, and topdressing. Experimental results have shown that the application of 1 kilogram of potassium sulfate can increase the yield of grain crops by 6-8 kilograms and sugar beets by 15.5-22.5 kilograms. Some chlorine sensitive crops (such as fruits, flax, tobacco, tea, citrus, potatoes, etc.) cannot be treated with potassium chloride, but can be treated with potassium sulfate.

The issue of oxalic acid in wild vegetables does require a scientific approach.

universality
Most wild vegetables (such as purslane, dandelion, shepherd's purse, amaranth, etc.) contain oxalic acid, but the content varies greatly. For example:

High oxalic acid: amaranth (about 300-500mg/100g), purslane

Low to moderate oxalic acid: shepherd's purse, dandelion tender leaves

Risk points
Oxalic acid easily combines with calcium to form calcium oxalate (the main component of kidney stones), and long-term excessive intake may:

Affects calcium absorption

Increased risk of stones (especially in patients with urinary system diseases)

⁣Today is Xiaohan, the coldest season of the year has arrived.
In the cold wind, may you have——
🔥 The warmth of the furnace
🍵 The sweetness of hot tea
👪 Family companionship

⁣Can work hard together, can also play together! 🎉

⁣Between mountains and rivers, enjoy a leisurely time

Although edible glucose and industrial glucose have the same chemical composition (both are C ₆ H ₁ ₂ O ₆), they have essential differences in raw materials, purity, hygiene standards, and uses. Edible glucose is made from food grade raw materials (such as corn starch), which have undergone strict refining and sterilization treatment, with a purity of ≥ 99.5%, in compliance with food safety standards (such as GB/T 20880), and is used in food, medicine, and health products; Industrial glucose may contain harmful impurities such as heavy metals and sulfides, with low purity (70%~95%), and is only used in sewage treatment, chemical or construction fields. It is absolutely inedible and misuse may lead to poisoning or health risks. The two have similar appearances and need to be distinguished by packaging labeling (such as SC license) or testing reports.

Sodium nitrite (NaNO ₂) is a common food additive mainly used for marinating meat (such as ham, sausages, bacon, etc.), which has preservative, color preserving, and flavor enhancing effects. However, excessive intake or improper use may pose health hazards, mainly including the following aspects:

1. Acute poisoning (high-risk)
Toxic dose: Adults may be poisoned if ingested 0.2-0.5 grams, and may die if ingested 1-2 grams.

Symptoms: Dizziness, vomiting, difficulty breathing, decreased blood pressure, and in severe cases, tissue hypoxia, coma, and even death due to methemoglobinemia.

Vulnerable population: Children or those who accidentally consume salt are at higher risk (such as mistakenly using it as salt).

2. Carcinogenic risk (long-term exposure)
The formation of nitrosamines: Nitrites react with amines produced by protein decomposition under gastric acid or high temperature cooking conditions, producing strong carcinogens such as nitrosamines (N-nitroso compounds).

Related cancers: Long term excessive intake may increase the risk of gastric cancer, esophageal cancer, colorectal cancer, and other cancers.

Hydroquinone

A potent whitening agent that directly inhibits tyrosinase, but may cause irritation or depigmentation (restricted in some countries).

Alternative ingredient: Arbutin (mild derivative).

Kojic Acid

Originating from fungi, it inhibits tyrosinase by chelating copper ions, and sensitive muscles may require caution.

377 (phenethyl resorcinol, SymWhite) ®）

Efficient tyrosinase inhibitors, commonly found in high-end whitening products.

Tranexamic Acid

Blocking melanin activation signals (such as prostaglandin PGE2) and having anti-inflammatory effects.

⁣Tripeptide (copper peptide) is formed by three amino acids, tripeptide is also called blue copper peptide; Glycylyl-l-histaminoyl-l-lysine. Tripeptide A triadic molecule composed of three amino acids linked by two peptides. It can effectively block the nerve conduction of a acetylcholine substance, has the effect of relaxing muscles, and improves dynamic wrinkles.

⁣Food and laughter accompany each other, team and warmth walk together! Thank you to every partner for their efforts and dedication. Tonight, let's put aside the busyness of work and fully enjoy this wonderful gathering time! Cheers to us!

Sulfur powder is both medicinal and toxic, depending on its usage, dosage, and application scenarios.

As a medication:
Skin treatment:

Usage: Used for treating skin diseases such as acne, scabies, eczema, etc.

Function: It has antibacterial, antifungal, and antiparasitic effects.

Application of Traditional Chinese Medicine:

Usage: In traditional Chinese medicine, it is used to warm yang, dispel cold, kill insects and relieve itching.

Application: Commonly used in topical preparations, such as sulfur soap.

As a poison:
Toxicity:

Inhalation risk: Inhaling sulfur powder can irritate the respiratory tract, causing coughing and difficulty breathing.

Ingestion risk: Ingestion may cause gastrointestinal discomfort, and in severe cases, may lead to poisoning.

Environmental hazards:

Pollution: A large amount of sulfur powder may contaminate soil and water sources, affecting the ecosystem.

Among the dazzling array of cosmetics, Carbopol plays an indispensable role. This seemingly ordinary white powder is actually a "magician" of cosmetic texture.

It can turn water into crystal gel, making lotion more silky, and forming a breathable film on the skin surface to lock water.

Whether it is a refreshing gel or a thick face cream, it is inseparable from the thickening and stabilizing effect of Carbomer. It is gentle and skin friendly, with high safety, making it a reliable assistant for cosmetic formulators.

Although Capom is unknown, he safeguards our beauty and is undoubtedly the 'invisible guardian'.

1. Sodium chloride (NaCl) - table salt
Features: Low price, easy to obtain.

Disadvantages: The effect is poor at extremely low temperatures (below -9 ° C), and it is corrosive to the environment and infrastructure.

2. Calcium chloride (CaCl ₂)
Characteristics: It is still effective at low temperatures (as low as -29 ° C) and has a rapid effect.

Disadvantages: High cost, corrosive to metals and concrete.

3. Magnesium chloride (MgCl ₂)
Features: Effective at low temperatures, strong moisture absorption, and can prevent road icing.

Disadvantage: Corrosive to the environment and infrastructure.

4. Potassium acetate (CH3 COOK)
Characteristics: Environmentally friendly snow melting agent with low corrosiveness to plants and concrete.

Disadvantages: High cost, mainly used in areas sensitive to corrosion such as airports.

5. Urea (CO (NH ₂) ₂)
Characteristics: Relatively friendly to plants and soil.

Disadvantages: The snow melting effect is weak and may cause eutrophication of the water body.
Chemical raw materials required for snow melting

6. Calcium magnesium acetate (CMA)
Characteristics: Environmentally friendly snow melting agent with low corrosiveness to the environment and infrastructure.

Disadvantages: High cost, slow snow melting speed.

7. Alcohols (such as methanol, ethanol)
Features: Lowering the freezing point, suitable for small-scale use.

Disadvantages: Flammable, high cost, not suitable for large-scale use.

Selection criteria:
Temperature: The effective temperature range of different chemicals varies.

Environmental impact: The impact on soil, plants, and water bodies needs to be considered.

Cost: Choose the appropriate snow melting agent based on the budget.

Corrosivity: Special attention should be paid when using near metal and concrete facilities.

Jojoba oil is often used for skin care due to its moisturizing and anti-inflammatory properties, but it cannot directly treat sunburn. The following are the possible effects and precautions of jojoba oil on sunburned skin:

The function of jojoba oil:
Moisturizing: Jojoba oil can help lock in moisture and relieve dry skin after sunburn.

Soothing: Its anti-inflammatory properties may alleviate redness, swelling, and discomfort caused by sunburn.

Repair: Rich in vitamin E and antioxidants, it may help with skin repair.

⁣Natural plant spice oil olive oil is a type of edible oil rich in oleic acid. Obtained from olive flesh, it is a non drying oil. The color is light yellow, clear and transparent, with high vitamin content and a unique olive fragrance. Containing 60% to 80% oleic acid, 8% to 15% linoleic acid, 7% to 11% palmitic acid, 2% to 3% stearic acid, and 0.5% to 0.8% linolenic acid. The saponification value is 187-196, and the iodine value is 79-90. Good stability, can generally be stored for several years without any change in quality or taste. Used for processing canned fish and meat, and can also be used as cold dressing oil and cooking oil. The digestion rate is around 94%. The main components of olive oil are glycerides of oleic acid, linoleic acid, and palmitic acid. Light yellow or yellow green liquid, non drying oil. It has a fragrance, a relative density of 0.9145-0.9190 (15/15 ℃), a freezing point of -6 ℃, an iodine value of 79-88, and a saponification value of 185-195. It is obtained by pressing olive flesh (with an oil content of 35% to 60%). Premium oil is used for food or medicine, while inferior oil is used for making soap, lubricating oil, etc.

Effect and Function
1. Olive oil can promote blood circulation, prevent arteriosclerosis and its complications, hypertension, heart disease, heart failure, renal failure, and cerebral hemorrhage.
2. Olive oil contains higher levels of unsaturated fatty acids, abundant vitamins A, D, E, F, K, carotenoids, and other fat soluble vitamins and antioxidants than any vegetable oil, and does not contain cholesterol, resulting in a very high digestion and absorption rate in the human body. It has the function of reducing stomach acid, preventing the occurrence of gastritis and duodenal ulcers, and can stimulate bile secretion, activate pancreatic enzyme activity, degrade oil, and be absorbed by the intestinal mucosa to reduce the occurrence of cholecystitis and gallstones.
3. Moisturizing and anti-cancer olive oil contains squalene, which can keep our skin elastic and nourish it, so it can be used for beauty. Both the body and face can use olive oil. In addition, if your hair is relatively dry, with split ends and roughness, you can also use olive oil to moisturize your hair, as long as you use it like a conditioner, which is effective and natural without irritation.
4. Improving secretion function: Olive oil can enhance the metabolic function of organisms. At present, olive oil has become the best edible oil to prevent and control diabetes.

⁣Glycerol is widely used in cosmetics, mainly due to its excellent moisturizing and skincare properties. The following are the main uses of glycerol in cosmetics:

1. Moisturizing agent
Glycerol is a powerful moisturizer that can absorb moisture from the air, help the skin stay hydrated, and prevent dryness.

2. Lubricants
Glycerol can enhance the texture of cosmetics, making them easier to apply and providing a smooth feeling.

3. Thickener
In some products, glycerol is used to regulate viscosity and texture, improving the user experience.

4. Solvent
Glycerol can be used as a solvent to help dissolve other ingredients and enhance the stability of the formula.

5. Protection barrier
Glycerol helps repair and enhance the skin barrier, reduce water loss, and protect the skin from external stimuli.

6. Soothing agents
Glycerol has a soothing effect and can reduce skin irritation and inflammation, making it suitable for sensitive skin.

7. Anti aging
By maintaining skin moisture, glycerin can reduce the appearance of fine lines and wrinkles, and enhance skin elasticity.

8. Hair care
Glycerol is also used in hair care products to help maintain hair moisture, prevent dryness and breakage.

9. Stabilizers
Glycerin helps to stabilize lotion and creams and prevent separation of ingredients.

10. Plasticizer
In facial mask and peel off products, glycerin can increase flexibility, making it easier to use and peel off.

⁣On the Winter Solstice Reunion Day, the company organized everyone to eat dumplings together, bringing them closer together with laughter and joy. Hot dumplings symbolize unity and may we work together in the future to achieve even greater success!

Ensuring the safety and reliability of chemical raw materials requires multiple approaches, and the following are some key measures:

1. Procurement process:

Select qualified suppliers: Prioritize suppliers with good reputation and complete qualifications, and regularly evaluate their performance.

Clear specification requirements: Provide detailed information on the specifications, purity, packaging, and other details of the raw materials in the procurement contract.

Strict acceptance: Check the packaging, labels, certificates, etc. upon receipt, and conduct sampling testing if necessary.

2. Storage process:

Reasonable storage: Select appropriate storage conditions based on the characteristics of the raw materials, such as temperature, humidity, light, etc.

Classification management: Store according to hazard level and chemical properties to avoid reactions caused by mixing.

Regular inspection: Regularly check storage conditions and promptly handle expired or deteriorated raw materials.

3. Usage process:

Train employees: Provide safety training to operators to ensure they master the correct operating methods and emergency measures.

Standardized operation: Strictly follow the operating procedures to use raw materials and avoid misuse or abuse.

Personal protection: Use protective equipment such as gloves, goggles, etc. as needed.

4. Transportation process:

Compliant transportation: Comply with the regulations for the transportation of hazardous chemicals, choose appropriate transportation vehicles and packaging.

Safe loading and unloading: Handle with care to prevent collision and leakage.

Emergency preparedness: Develop emergency plans and equip necessary emergency supplies.

5. Other measures:

Establish management system: Develop a comprehensive chemical raw material management system, clarify responsibilities and processes.

Regular review: Regularly inspect the implementation of the system and make timely improvements.

Application of Information Technology: Using information technology to manage chemical raw materials, improving efficiency and safety.

Specific measures need to be adjusted according to the actual situation, and it is recommended to consult professionals.

Here are some additional suggestions:

Maintain good ventilation: When using and storing chemical raw materials, ensure good ventilation.

Keep away from fire sources: Store chemical raw materials in a place away from fire and heat sources.

Proper disposal of waste: Dispose of chemical waste in accordance with relevant regulations to avoid environmental pollution

⁣1、 The advantages of ethyl cellulose as a cosmetic thickener
Ethyl cellulose is mainly used as a thickener in cosmetics due to its following advantages:
Ethyl cellulose has a good thickening effect, which can increase the viscosity of the product, improve the consistency of lotion, cream and other cosmetics, and make the product easier to apply.
Due to its good solubility, ethyl cellulose can be easily compatible with other adhesives and stabilizers, thereby improving the stability and texture of the product.
Ethyl cellulose also has excellent moisturizing properties, which can increase the moisturizing effect of products and make the skin more moisturized.


2、 The role of ethyl cellulose as an emulsifier and stabilizer
In addition to its thickening effect, ethyl cellulose is often used as an emulsifier and stabilizer in cosmetics, and its functions mainly include the following aspects:
Ethyl cellulose can enhance the stability of lotion and cream, and improve the durability and texture of products.
Because of its good emulsification, it can effectively combine water and oil to produce a mild and easy to apply lotion.
Ethyl cellulose also has excellent adhesion, which allows cosmetics to better adhere to the skin surface and produce better cosmetic effects.