Illustrative formula:HCHO Molecular weight:thirty.00Common name:blessingMalin
nature:This product is colorless, pungent and malodorous liquid, which is easy to polymerize at low temperature to form white precipitate insoluble in water; Usually reagent addition8-1four%, industrial products plus 9-1three% methanol as polymerization inhibitor. thirty-seven% solution relative density 1.07five-1.08five, boiling point 101℃, water soluble; It is flammable and has the risk of combustion in case of fire and heat source; Methanol freeThe flash point of thirty-seven% formaldehyde solution is 8five℃； Violent reaction in contact with oxidant; It has high toxicity, strong irritation and corrosivity. It belongs to other corrosive articles, and the UN number isUN1198。
Purpose:It is one of the important organic chemical raw materials. It is widely used in the preparation of polyformaldehyde resin, phenolic resin, urea formaldehyde resin, melamine resin, nylon fiber and other organic synthesis industries.
Product quality:Meet the following standards (analytical purity)
check Test items | GB/Ttwo7five0-two thousand and twostandard | Q/SWtwo7five0-two thousand and fivestandard |
Outside view | Colorless Transparent Liquid , a small amount of precipitation or turbidity caused by low temperature condensation of formaldehyde is allowed during storage. | Colorless Transparent Liquid 。 |
content(HCHO ), % | thirty-seven.0-four0.0 | thirty.0-thirty.five |
methanol(CHthreeOH), % | 8-1four% | ≤0.two |
Acidity (in)H+(total), mmol/100g | ≤0five | ≤0five |
Burning residue, % | ≤00three | ≤00three |
Iron（Fe）, % | ≤00001 | ≤00001 |
Heavy metals (in)Pb(total), % | ≤0000two | ≤00001 |
Chloride (in)Cl(total), % | ≤0001 | ≤0001 |
Sulfate (in)SOfour(total), % | ≤000four | ≤000four |
Packing and storage :Reagent formaldehyde solution has the following three packages::
1)five00ml瓶裝，每箱two0瓶。
two)twofive00ml瓶裝，每箱four瓶。
three)twofive-two00Kg桶裝。
It shall be stored in a dry and ventilated warehouse,two1-twofive℃Better. It is easy to oligomerize at low temperature and should not be stored for too long.
Valid for six months.
03-03
Sec-066 cleaning agent
Plate washing waterSEC-66eight#The main components areDimethoxymethane, dichloromethane and methanol,It has excellent physical and chemical properties, i.e. good solubility, low boiling point and good
03-03
S-655 developer
DeveloperS-655#It is a kind of anti welding ink specially used for high quality requirements/線路干膜使用的Developer，主要成分by高純度的碳酸鉀及溶纖劑、軟水劑、非silicon型消泡劑等高級(jí)原料。This producthaveHave excellentAnalytical abilityan
03-03
158# film cleaner (without n-hexane)
Film cleanerSEC-one5eight#It is a quick drying electrostatic cleaning agent composed of low boiling solvent. It is suitable for cleaning and removing static electricity of various silver salt films (b
03-03
155# film cleaner (flame retardant)
Film cleanerSEC-onefivefive#It is a quick drying electrostatic cleaning agent composed of low boiling solvent. It is suitable for cleaning and removing static electricity of various silver salt films