Bromacil

Description

Bromacil · CAS 314-40-9 · C9H13BrN2O2. UNII I048FFR2J0. Melting Point: 158 °C; Melting Point: 158-160 °C; Solubility: 0.08 % at 77 °F (NIOSH, 2024).

Identification

CAS Registry Number	314-40-9
PubChem CID	9411
Molecular formula	C9H13BrN2O2
IUPAC name	5-bromo-3-butan-2-yl-6-methyl-1H-pyrimidine-2,4-dione
UNII (FDA)	I048FFR2J0

Computed Descriptors

Molecular Weight	261.12
XLogP3	2.1
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	2
Exact Mass	260.01604
Monoisotopic Mass	260.01604
Topological Polar Surface Area	49.4
Heavy Atom Count	14
Formal Charge	0

Physical & Chemical Properties

Melting Point	158 °C
Melting Point	158-160 °C
Solubility	0.08 % at 77 °F (NIOSH, 2024)
Solubility	(77 °F): 0.08%
Density	1.55 g/cu cm at 25 °C
Density	1.55 g/cm³
Density	1.55
Vapor Pressure	0.0008 mmHg at 212 °F (NIOSH, 2024)
Vapor Pressure	0.00000031 [mmHg]
Vapor Pressure	4.1X10-2 mPa /3.07X10-7 mm Hg/ at 25 °C

Physical description & handling notes

• Bromacil appears as colorless to white odorless crystalline solid. Used as an herbicide. Commercially available as a wettable powder or in liquid formulations. (NIOSH, 2024)
• Odorless, colorless to white, crystalline solid. [herbicide] [Note: Commercially available as a wettable powder or in liquid formulations.]; [NIOSH]
• COLOURLESS-TO-WHITE CRYSTALS.
• Odorless, colorless to white, crystalline solid.
• White crystalline solid
• White to light-tan crystalline solid

Regulatory Status

GHS notification summary	2.5% (3 / 121)

GHS Hazard Classification

GHS notification summary	2.5% (3 / 121)
Reported hazard statements	H302 (97.5%), H315 (62%), H319 (62%), H335 (62%), H400 (97.5%), H410 (66.1%), H320, H351

Documented Uses

• Used for brush control, especially against perennial grasses; it is also used to control weeds in pineapple and citrus crops; [EXTOXNET]
• Bromacil is a non-selective inhibitor of photosynthesis
• Total weed and brush control on non-crop land ... Also for selective control of annual and perennial weeds and grasses in citrus and pineapple plantations.
• Bromacil is produced by reaction of isopropyl isocyanate with methyl 3-aminocrotonate, followed by cyclization in sodium hydroxide at elevated temperature, and bromination in acetic acid.
• BROMINATION OF 3-SEC-BUTYL-6-METHYLURACIL
• Bromacil is manufactured by the reaction of phosgene and ammonia with sec-butylamine to produce sec-butylurea, which reacts with ethylacetoacetate to produce 3-sec-butyl-6-methyluracil, which is then brominated to produce bromacil.

Synonyms

BROMACIL; 314-40-9; Uragan; Hyvar X; Borea; 5-Bromo-3-sec-butyl-6-methyluracil; Urox B; Borocil; Cynogan; Hyvarex; Bromax; Uragon; Istemul; Urox ha; Urox HX; Hyvar-X Weed Killer

Frequently Asked Questions

What are the CAS number and molecular formula of Bromacil?

CAS 314-40-9; molecular formula C9H13BrN2O2; molecular weight — g/mol.

What other names is Bromacil known by?

BROMACIL, 314-40-9, Uragan, Hyvar X, Borea, 5-Bromo-3-sec-butyl-6-methyluracil.

Is Bromacil classified as hazardous?

2.5% of GHS notifications report no hazard classification (3 of 121).

What are the key physical properties of Bromacil?

Melting Point: 158 °C; Melting Point: 158-160 °C; Solubility: 0.08 % at 77 °F (NIOSH, 2024); Solubility: (77 °F): 0.08%.

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.