Since they derive from a strong acid but weak base, they are both at about pH = 5; as a consequence, the morphine salts are mixed with small amounts of NaOH to make them suitable for injection.A number of salts of morphine are used, with the most common in current clinical use being the hydrochloride, sulfate, tartrate, and citrate; less commonly methobromide, hydrobromide, hydroiodide, lactate, chloride, and bitartrate and the others listed below. Morphine diacetate (heroin) is not a salt, but rather a further derivative, see above.Morphine meconate is a major form of the alkaloid in the poppy, as is morphine pectinate, nitrate, sulfate, and some others. Like codeine, dihydrocodeine and other (especially older) opiates, morphine has been used as the salicylate salt by some suppliers and can be easily compounded, imparting the therapeutic advantage of both the opioid and the NSAID; multiple barbiturate salts of morphine were also used in the past, as was/is morphine valerate, the salt of the acid being the active principle of valerian. Calcium morphenate is the intermediate in various latex and poppy-straw methods of morphine production, more rarely sodium morphenate takes its place. Morphine ascorbate and other salts such as the tannate, citrate, and acetate, phosphate, valerate and others may be present in poppy tea depending on the method of preparation.The salts listed by the United States Drug Enforcement Administration for reporting purposes, in addition to a few others, are as follows:

Production
In the opium poppy, the alkaloids are bound to meconic acid.
Abnormal findings of fibrillin-1 have been documented in these CSF leak patients, but only one patient demonstrated a fibrillin-1 defect consistent with Marfan syndrome. See also
Subdural effusion

References
External links
CFS leak info
Spinal CSF leak
Spinal CSF leak Canada