工业尿素

Description

Industrial Urea · CAS 37955-36-5 · CH4N2O. UNII 8W8T17847W. Melting Point: 275 °F (NTP, 1992); Melting Point: 132.7; Melting Point: 132 °C to 135 °C.

Identification

CAS Registry Number	37955-36-5
PubChem CID	1176
Molecular formula	CH4N2O
IUPAC name	urea
UNII (FDA)	8W8T17847W

Computed Descriptors

Molecular Weight	60.056
XLogP3	-1.4
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	1
Rotatable Bond Count	0
Exact Mass	60.032362755
Monoisotopic Mass	60.032362755
Topological Polar Surface Area	69.1
Heavy Atom Count	4
Formal Charge	0

Physical & Chemical Properties

Melting Point	275 °F (NTP, 1992)
Melting Point	132.7
Melting Point	132 °C to 135 °C
Melting Point	132.70 °C
Melting Point	132 °C
Melting Point	132.7-135 °C
Melting Point	132.7 °C
Solubility	545000
Solubility	In water, 5.45X10+5 mg/l @ 25 °C
Solubility	545.0 mg/mL

Physical description & handling notes

• Urea appears as solid odorless white crystals or pellets. Density 1.335 g /cc. Noncombustible.
• Dry Powder; Other Solid; Wet Solid; Large Crystals; CBI; Liquid; Large Crystals; Liquid; Large Crystals; Liquid; Other Solid; Liquid; Other Solid
• Colourless to white, prismatic, crystalline powder or small, white pellets
• White solid with a characteristic odor; [ICSC]
• Solid
• WHITE CRYSTALS WITH CHARACTERISTIC ODOUR.

Regulatory Status

Regulatory & Food Contact	FDA Substance added to food: FORMULATION AID FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS CHEWING_GUM_BASE_COMPOUND; TEXTURIZER; THICKENER; YEAST_FOOD: Food Additives NOT SPECIFIED Use at levels of up to 3% in chewing-gum not of toxicological concern TRS 837-JECFA 41/28
GHS notification summary	96.1% (4430 / 4611)

GHS Hazard Classification

GHS notification summary	96.1% (4430 / 4611)

Documented Uses

• A compound (CO(NH2)2), formed in the liver from ammonia produced by the deamination of amino acids. It is the principal end product of protein catabolism and constitutes about one half of the total urinary solids. [ChemIDplus] Used as a mordant in textile dyeing; [www.ci.tucson.az.us/arthazards/medium.html] Used to make fertilizer, feed additives, urea-formaldehyde resins and pharmaceuticals; Humans excrete 20-35 grams per day and have blood levels of 200-400 mg/L. [AIHA]
• Textiles (Printing, Dyeing, or Finishing) [Category: Industry]
• Textile arts [Category: Hobbies]
• Condensed with malonic ester to form barbituric acid; cellulose softener.
• LIQUID & OTHER FERTILIZER APPLICATIONS; LIVESTOCK NUTRIENT; MONOMER FOR UREA-FORMALDEHYDE RESINS; CHEMICAL INTERMEDIATE FOR MELAMINE
• For more Uses (Complete) data for UREA (22 total), please visit the HSDB record page.

Synonyms

urea; 57-13-6; carbamide; Carbonyldiamide; Ureophil; Carbonyldiamine; Ureaphil; Keratinamin; Urevert; Alphadrate; Aquadrate; Carbaderm; Pastaron; Urepearl; Carbonyl diamide; Carbamide resin

Frequently Asked Questions

What are the CAS number and molecular formula of Industrial Urea?

CAS 37955-36-5; molecular formula CH4N2O; molecular weight — g/mol.

What other names is Industrial Urea known by?

urea, 57-13-6, carbamide, Carbonyldiamide, Ureophil, Carbonyldiamine.

What is the regulatory status of Industrial Urea?

Documented regulatory listings: FDA Substance added to food: FORMULATION AID; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS; CHEWING_GUM_BASE_COMPOUND; TEXTURIZER; THICKENER; YEAST_FOOD: Food Additives.

Is Industrial Urea classified as hazardous?

96.1% of GHS notifications report no hazard classification (4430 of 4611).

What are the key physical properties of Industrial Urea?

Melting Point: 275 °F (NTP, 1992); Melting Point: 132.7; Melting Point: 132 °C to 135 °C; Melting Point: 132.70 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.