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Paraformaldehyde 30525-89-4
SINOBIO
38084090
Paraformaldehyde (CAS number 30525-89-4) is a solid polymer of formaldehyde. Its chemical formula is typically (CH₂O)n (where n is between 6 and 100). It is a white amorphous solid at room temperature with a formaldehyde odor. The following is a detailed description:
Appearance: White crystalline powder or granular solid.
Density: Approximately 0.88-1.45 g/cm³ (values vary depending on conditions).
Melting Point: 120-170°C (depending on the degree of polymerization).
Solubility:
-Slightly soluble in cold water, dissolves rapidly in hot water.
-Insoluble in organic solvents such as ethanol and ether.
-Readily soluble in dilute acid and alkali solutions.
Stability: Stable at room temperature, but decomposes upon heating or exposure to strong acids or alkalis, releasing formaldehyde gas.
*Depolymerization: Paraformaldehyde depolymerizes to monomeric formaldehyde under heating or alkaline conditions, making it a convenient form of formaldehyde for storage and transportation.
*Reactivity: As a source of formaldehyde, paraformaldehyde can participate in a variety of organic synthesis reactions, such as the preparation of resins, adhesives, and paper reinforcements.
Paraformaldehyde, a polymer of formaldehyde with a white crystalline or powdered appearance, plays a pivotal role in multiple industrial and pharmaceutical fields due to its chemical reactivity and functional versatility. Its primary application lies in the production and application of herbicides—it serves as a key raw material in synthesizing certain herbicide active ingredients, helping control the growth of unwanted weeds in agricultural lands, lawns, and non-crop areas, thereby safeguarding the growth of target crops or maintaining the tidiness of green spaces.
Beyond agricultural use, paraformaldehyde is a critical component in the manufacture of synthetic resins and adhesives. In synthetic resin production, it reacts with other monomers (such as phenol, urea, or melamine) to form resins like phenol-formaldehyde resin and urea-formaldehyde resin. These resins are further processed into artificial horn products (used in making costume jewelry, decorative handles, or vintage-style accessories) and artificial ivory (applied in crafting imitation ivory carvings, billiard balls, or piano keys) due to their excellent moldability, hardness, and texture similar to natural materials. In adhesive production, it is used to prepare wood adhesives, which are widely used in furniture manufacturing, plywood processing, and wood-based panel production to ensure strong bonding between wood components.
In the pharmaceutical sector, paraformaldehyde has dual applications. On one hand, it acts as an active ingredient in contraceptive creams—it exerts a spermicidal effect by altering the external structure of sperm, thereby helping prevent unintended pregnancy when used as directed. On the other hand, it is employed in pharmaceutical processing, such as in the synthesis of certain pharmaceutical intermediates or the disinfection of pharmaceutical production equipment and environments to meet strict hygiene standards in drug manufacturing.
Item | Standard (%) Q/320601NBB19-2020 |
Content of formaldehyde | 95.0-97.0 |
Acidity（Formic acid） | ≤0.03 |
Methanol content | ≤1 |
PH | 3.0-7.0 |
Fe Content | ≤0.0002 |
Ash content | ≤0.1 |
*Used in the synthesis of urea-formaldehyde resins, phenol-formaldehyde resins, polyacetal resins, melamine resins, ion exchange resins, etc.
*Used in the preparation of various adhesives, widely used in the wood processing, papermaking, coatings, and other industries.
*Used in the synthesis of herbicides such as acetochlor, butachlor, and glyphosate.
*Used as a fumigant and disinfectant for medical use, such as disinfecting hospital rooms, clothing, and bedding.
*In the biomedical field, paraformaldehyde fixatives (such as 4% paraformaldehyde solution) are widely used for biological tissue fixation and immunoassays.
*Used as a synthetic paper strengthening agent to improve paper strength and water resistance.
*Used as a foundry release agent and foundry adhesive.
*Used as a fumigant disinfectant for disinfecting aquaculture facilities.
Packing : 25 KG per woven bag made with compound woven fabric and inner PE bag.
- 12000kg (480 bags) of palletized goods in 20' container.
- 24000kg (960 bags) of palletized goods in 40' container.
can also be customized according to customer needs.
Paraformaldehyde (CAS number 30525-89-4) is a solid polymer of formaldehyde. Its chemical formula is typically (CH₂O)n (where n is between 6 and 100). It is a white amorphous solid at room temperature with a formaldehyde odor. The following is a detailed description:
Appearance: White crystalline powder or granular solid.
Density: Approximately 0.88-1.45 g/cm³ (values vary depending on conditions).
Melting Point: 120-170°C (depending on the degree of polymerization).
Solubility:
-Slightly soluble in cold water, dissolves rapidly in hot water.
-Insoluble in organic solvents such as ethanol and ether.
-Readily soluble in dilute acid and alkali solutions.
Stability: Stable at room temperature, but decomposes upon heating or exposure to strong acids or alkalis, releasing formaldehyde gas.
*Depolymerization: Paraformaldehyde depolymerizes to monomeric formaldehyde under heating or alkaline conditions, making it a convenient form of formaldehyde for storage and transportation.
*Reactivity: As a source of formaldehyde, paraformaldehyde can participate in a variety of organic synthesis reactions, such as the preparation of resins, adhesives, and paper reinforcements.
Paraformaldehyde, a polymer of formaldehyde with a white crystalline or powdered appearance, plays a pivotal role in multiple industrial and pharmaceutical fields due to its chemical reactivity and functional versatility. Its primary application lies in the production and application of herbicides—it serves as a key raw material in synthesizing certain herbicide active ingredients, helping control the growth of unwanted weeds in agricultural lands, lawns, and non-crop areas, thereby safeguarding the growth of target crops or maintaining the tidiness of green spaces.
Beyond agricultural use, paraformaldehyde is a critical component in the manufacture of synthetic resins and adhesives. In synthetic resin production, it reacts with other monomers (such as phenol, urea, or melamine) to form resins like phenol-formaldehyde resin and urea-formaldehyde resin. These resins are further processed into artificial horn products (used in making costume jewelry, decorative handles, or vintage-style accessories) and artificial ivory (applied in crafting imitation ivory carvings, billiard balls, or piano keys) due to their excellent moldability, hardness, and texture similar to natural materials. In adhesive production, it is used to prepare wood adhesives, which are widely used in furniture manufacturing, plywood processing, and wood-based panel production to ensure strong bonding between wood components.
In the pharmaceutical sector, paraformaldehyde has dual applications. On one hand, it acts as an active ingredient in contraceptive creams—it exerts a spermicidal effect by altering the external structure of sperm, thereby helping prevent unintended pregnancy when used as directed. On the other hand, it is employed in pharmaceutical processing, such as in the synthesis of certain pharmaceutical intermediates or the disinfection of pharmaceutical production equipment and environments to meet strict hygiene standards in drug manufacturing.
Item | Standard (%) Q/320601NBB19-2020 |
Content of formaldehyde | 95.0-97.0 |
Acidity（Formic acid） | ≤0.03 |
Methanol content | ≤1 |
PH | 3.0-7.0 |
Fe Content | ≤0.0002 |
Ash content | ≤0.1 |
*Used in the synthesis of urea-formaldehyde resins, phenol-formaldehyde resins, polyacetal resins, melamine resins, ion exchange resins, etc.
*Used in the preparation of various adhesives, widely used in the wood processing, papermaking, coatings, and other industries.
*Used in the synthesis of herbicides such as acetochlor, butachlor, and glyphosate.
*Used as a fumigant and disinfectant for medical use, such as disinfecting hospital rooms, clothing, and bedding.
*In the biomedical field, paraformaldehyde fixatives (such as 4% paraformaldehyde solution) are widely used for biological tissue fixation and immunoassays.
*Used as a synthetic paper strengthening agent to improve paper strength and water resistance.
*Used as a foundry release agent and foundry adhesive.
*Used as a fumigant disinfectant for disinfecting aquaculture facilities.
Packing : 25 KG per woven bag made with compound woven fabric and inner PE bag.
- 12000kg (480 bags) of palletized goods in 20' container.
- 24000kg (960 bags) of palletized goods in 40' container.
can also be customized according to customer needs.
